British Marine Testaceous Mollusca,:f. 



^n 



Synopsis of the families and genera of the British testaceous 



, Acephala palliobranchiata and lamellibranchiata, Gastero- 



/rpoda and Cephalopoda, distributed in six divisions on the bases 



of sexual organization, larrt ni has ^noiisaicaBxa ifinoaiaq 



s • First Division. 



■^ Acephala palliobranchiata. 



hermaphrodite, sine coneubitu/ 



T^^^ebratuhdae . . . HypothjTis. 

 r Terebratula. 



f"* " Megathyris. 



wanisidse ,i Crania. 



' /:, Second Division. 

 . Acephala lamellibranchiata. 

 hermaphrodite, sine concubitu. 



f ' * Mantle open, no tubes. 



Anomiadae Anomia. 



Pectinidse Pecten. 



i,h li-Vt M^Mff Lima. 

 Ostreadse Ostrea. 



^^^yMantle open, no siphonal tubes 



ififTR 



or sessile. 



Mytilid?g/;,,. 



•JVi' 



..Mj^tilus. 

 Modiola. 

 Crenella. 

 Pinna. 

 Avicula. 



■*** Mantle ojien., tubes sessile or 

 short. 



Arcadaei .fM;toi....ATca,. 



Pectunculus. 



Nucula. 



Leda. 



Galeomma. 

 Unionidae Unio. 



Anodon. 

 Cyprinidae Cyprina. 



Circe ? 



Astaxte. 



Isocardia, 

 Lucinidae Lucina. 



Tui-tonia. 

 Kelbadae Kellia. 



Lepton. 



Montacuta. 

 Cycladidae Cyclas. 



Pisidiiim. 



**** Mantle open, tubes short. 



Cardiadae .Cardiiim. 



Veneridae ., Yemis. 



' Veneridae ... ... ... Artemis ? 



ui/t ifsdJ ,eiiB:iif()J .^*^*: rggdo to 

 LucmQpsis. r • 



Mactridffi Mactra.^'''^- '"'"^'^ 



DonacidsB ..„.....Donax.' iioujo^ 

 fuiooofi lii'Ervdlia. rngfiam 

 ***** Mantle open, tubes long. 



Tellinidffi TeUina. 



Psammobia. nJ 

 Syndosmya. 

 Scrobicularia. 

 Diodonta. 



****** Mantle closed, tubes short,. . 



Anatinidae Anatina. ,> 



Corbididae Corbula. 



Sphaenia. 



Pandora. 



Neaera. 



Poromya? , ,Q 



^^'^^^^^^ Solen- ieoimoJ 



******* Mantle closed, tubes hmg]^ 



Solenidae Solenicurtus. ■ -'"■ 



Gastrochaenidae . . . Gastrocbaena. 



Saxicava. 



Venerirupis. 



Petricola. 

 Myadae Mya. -I Jo 



Pholadidae Pholas. 



Teredo. 

 Xylophaga. 



Third Division. 



Gasteropoda lateribranchiata. 

 cyclobranchiata. 

 cervicobranchiata. 



Hermaphrodite, sine congressu. 



* lateribranchiata. 

 DentaUadae Dentabum . 



** cyclobranchiata. 

 Chitonidae Chiton. 



*** cervicobranchiata. 



PateUidac Patella. 



Acmaea, 



