这个网站很好，不错！ 台灣經濟性貝類檢索表
為了更能符合使用者的快速查詢與參考需要，特別將選錄台灣常見腹足綱二十種及雙殼綱十八種經濟性貝類，以下面簡明的檢索表，供使用者比對參考。
1a單殼..............................................................................2 1b雙殼............................................................................21 2a殼呈片狀或耳狀...........................................................3 2b殼呈螺旋形..................................................................4 3a殼呈斗笠狀，殼表面無孔洞...............................花笠螺 3b殼呈耳狀，殼表面有多個孔洞...........................九孔螺 4a無水管..........................................................................5 4b有水管........................................................................11 5a殼口內有真珠光澤.......................................................6 5b殼口內無真珠光澤.......................................................7 6a殼呈圓錐形.........................................................黑鐘螺 6b殼不呈圓錐形........................................................珠螺 7a螺塔長度小於殼口長...................................................8 7b螺塔長度大於殼口長...................................................9 8a無臍孔............................................................漁舟蜑螺 8b有臍孔............................................................細紋玉螺 9a殼面光滑.....................................................................10 9b殼面有螺肋............................................................錐螺 10a殼表面有墨綠色殼皮.......................................圓田螺 10b殼表面有棕褐色花紋...............................非洲大蝸牛 11a外唇外緣無棘狀突起...............................................12 11b外唇外緣有棘狀突起...............................長鼻鳳凰螺 12a內唇無軸襞...............................................................13 12b內唇有軸襞...............................................................18 13a水管明顯突出...........................................................14 13b水管不突出...............................................................16 14a貝殼肩部無瘤狀突起...............................................15 14b貝殼肩部有瘤狀突起...................................紅皺岩螺 15a無口蓋......................................................花球枇杷螺 15b有口蓋..............................................................長香螺 16a螺層間無明顯縫合溝...................................燒酒海蜷 16b螺層間有明顯縫合溝...............................................17 17a體螺層大於1/2殼長.........................................花鶉螺 17b體螺層小於或等於殼長...............................象牙鳳螺 18a殼表面有瘤狀突起或顆粒........................................19 18b殼表面無瘤狀突起或顆粒.......................................20 19a無後水管溝.......................................................白法螺 19b有後水管溝......................................................赤蛙螺 20a殼口狹長......................................................橙口榧螺 20b殼口寬廣..........................................................椰子渦螺 21a有鉸齒......................................................................22 21b無鉸齒......................................................................36 22a鉸齒數目小於五.......................................................23 22b鉸齒數目大於五...................................................血蚶 23a有內韌帶...................................................................24 23b無內韌帶..................................................................25 24a殼頂兩側無耳狀突起...........................................公代 24b殼頂兩側有耳狀突起.......................................亞洲日月蛤 25a殼內面無真珠光澤...................................................26 25b殼內面有真珠光澤...................................................35 26a殼內面的腹緣有皺褶...............................................27 26b殼內面的腹緣平滑...................................................28 27a殼長與殼高相等長...........................................環文蛤 27b殼長小於殼高...............................................厚殼縱簾蛤 28a雙殼不能緊密閉合...................................................29 28b雙殼可以緊密閉合...................................................30 29a殼內面呈紫色...................................................西施舌 29b殼內面呈白色.......................................................竹蟶 30a殼表面無成長輪肋...................................................31 30b殼表面有成長輪肋...................................................33 31a殼表面無放射肋.......................................................32 31b殼表面有放射肋.......................................小眼花簾蛤 32a殼頂偏向前方.......................................................文蛤 32b殼頂位於中央.......................................................花蛤 33a無墨綠色殼皮...........................................................34 33b有墨綠色殼皮...................................................台灣蜆 34a殼頂位於前方1/3處.............................................淺蜊 34b殼頂位置接近中央...........................................山瓜子橫簾蛤 35a無明顯套線彎.......................................................石蚌 35b有明顯套線彎...............................................綠殼菜蛤 36a殼表面無放射肋.......................................................37 36b殼表面有放射肋.......................................牛角江珧蛤 37a雙殼大小相等...................................................黑石蜊 37b雙殼大小不相等...............................................長牡蠣
