No. 5. — Notes on the Anatomy of Corhymladce (Mollusca), and a 

 Translation from the Danish of an Article on the Anatomy of 

 Cyclas (Sphoerium) by Jacobsex. By Temple Pkime. 



But little has been written on the anatomy of Corhiculadce. Gray 

 (1853)* gave a description of the soft parts of the genera Corhicula, 

 Batissa, Cyrena, Sphoerium, and Pisidium ; but these notices do not 

 come strictly under the head of anatomy. 



The first truly anatomical article we have on this family is one pub- 

 lished (1828) t by Jacobsen of Copenhagen, on the anatomy of Cyclas 

 (SpIuErium) cornea. This memoir being in Danish has necessarily been 

 accessible to but few, and I have thought it would not be ill-judged to 

 have it placed before our naturalists, and consequently have translated 

 it into English. This article, I will add, was reviewed, in 1830, in the 

 twenty-third volume of the Bulletin des Sciences Naturelles. The next 

 article we have is the development of Cyclas calyculata (Sphcerium 

 lacustre) by Oscar Schmidt, in 1854; J following upon this, we have the 

 anatomy of Cyclas [Sphcerium) cornea, by Franz Leidig in 1855 ;% both 

 these articles are also too little accessible, and at some future time I 

 propose translating them. 



Mr. Fischer of Paris, in 18G3, § published the anatomy of Corbicula 

 Largillierti. This article was translated into English in 1867 ;|| the same 

 author published, in 1872,11 an article on the anatomy of Cyrena Caro- 

 liniensis and of Cyrena Floridana. 



The articles enumerated under the heads 6-9 also give incidental 

 notices concerning Sjjhoeritim and Pisidium. 



As far as my information goes, this is all that has been written on this 

 subject. 



Summary. 



1. Cycladens anatomiske Undersogelse. L. Jacobsen, K. Dansk. Selsk. 

 Naturvid. Afhandl. Vol. III. 1828, pp. 303-323, PI. 



2. Ueber die Entwicklung von Cyclas calyculata, Drap. Oscar Schmidt, 

 Midler's Archiv, 1854, pp. 428-438, PI. XVI. 



» Brit. Mus. Cat. Conchif. 



t Proc. Royal Danish Soc. Nat. Sci, Vol. III. 



X Miiller's Archiv. IJ Ann. Lye. N. H. N. Y. Vol. VIII. 



§ J. CoDchyl. Vol. XI. IT Ann. Lye. N. H. N. Y. Vol. X. 



