in 



BIBLIOGRAPHY OF 



Stimpson (W.)- Some observations on the identity of Nucula navi- 

 cularis and N. thraciceformis. — JProc. Bost. Soc. Nat. Hist. 



IV. 1851, 26. (244 



Stimpson (W.). Notices of several species of mollusca from Mas- 

 sachusetts Bay. — Proc. Bost. Soc. Nat. Hist. IV. 1851, 

 12. (245 

 Nov. sp. 



Chemnitzia modesta. Rissoa pelagica. 



Ris&oa eburnea. Turritella acicula. 



exarata. areolata. 



multilineata. 



Stimpson (W.). Summary of observations on the fauna of the Bay 

 of Fundy. — Proc. Bost. Soc. Nat. Hist. IV. 1851, 95. (246 



Stimpson (W.). Shells of New England: a revision of the Synony- 

 my of the testaceous molluscs of New England; with notes 

 on their structure, and their geographical and bathymetri- 

 cal distribution. With figures of new species. Boston. 

 1851. 8vo. Plates I. and ri. (247 

 Nov. sp. 



Columbella Gouldiana, Ag. Mss. Cyclas pellucida, Prime. 



Stimpson (W.). A monograph of the genus Coecum in the United 

 States. — Proc. Bost. Soc. Nat. Hist. IV. 1851, 112. (248 



Nov. sp. 



Coecum floridanum. Coecum pulchellum. 



nitidum. 



A. the Proceedings of the Academy of Natural Sciences of 

 Philadelphia. 



Lea (Isaac). On the genus Acostcea, of D'Orbigny. V. 1851, 277. 



(249 



Leidy (Joseph). On Plumatella. V. 1851. 261; — on Cristatella. 



V. 1851, 265. (250 



Nov. sp. 



Plumatella diffusa. Cristatella magnifica. 



