ON MOLLUSCA OF THE WEST COAST OF NORTH AMERICA. 543 



of students ; but the donations were severally declined by the respective 

 governments. They have since been offered to the Museums of Harvard 

 University, Cambridge, Mass. ; M'Gill University, Montreal, C. E. ; and the 

 Smithsonian Institution, Washington, D. C. ; and accepted on the same con- 

 ditions *. The writer of the Brit. Mus. Catalogue spared no pains in his 

 endeavours to verify the previously described species of Prof. C. B. Adams ; 

 yet a subsequent comparison of types has developed very unexpected coinci- 

 dences. Those who will take the trouble to compare the two diagnoses in the 

 synonyms now given will add one to the many proofs of the uncertainty of 

 the senses in observation, and the inaccuracy of language in description. The 

 following corrections and additions should be made to the list in the British 

 Association Eeport, pp. 243-264. 



18. Parapholas acuminata is united to P. calva by Tryon, Mon. Phol. 



23. The specimens obtained from Madagascar by Sir E. Belcher in the Voy. Sa- 



marang appear absolutely idenlical. 



24. Petricola robusta. The West Indian form of this species is the Choristodon 



typicum of Jonas ; Mus. Cum. 

 35. Sphcenia fragilis is perhaps *S'. luticola, Val. 

 38. Solecurtus politus ? = S. Carpenteri, Dkr. 



40. Should be Semele favescens, Old. 



41. Semele ?venusta should be S. bicolor, C. B. Ad. Panama. C. S. Lucas. 

 46. Should be Sanc/uinolaria miniata, Gld., as in first Report. 



48. Should be TelUna purpurea, Brod. & Sby., teste type in Mus. Hani. 



49. = T. pur A, Gld., nom. prior. 



54. Quite distinct from TelUna alternata, Say. 



56. Tellina ?eburnea proves to be the type of a new generic form, probably 



belonging to Kelliadce, viz. Cycladella papyracea. A perfect specimen, since 



found, is in Mr. Hanley's collection. 



65. Tellidora Burnett is not L. cristata : v. antea, p. 528. 



66, =Strigilla fucata, Gld. (not miniata). Specimens received from different 



stations on the Pacific Coast vary very greatly in colour and markings. 



68. The fragment of " ??Psammobia " is perhaps part of a Lepas-vslve. 



71 and 72. The names of these shells have been altered and re-altered in Mus. 

 Cuming, as will be seen by comparing Brit. Mus. Maz. Cat., p. 43, with the 

 note, p. 548, and with the present arrangement. Mr. Hanley states that 

 no. 72, D. culminatus, Cpr., is his true carinatus ; therefore 71, D. carinatus, 

 Cpr., and of most collections, must stand as D. rostratus, C. B. Ad., teste type- 

 valve in Mus. Amherst. The two species uniformly retain their dis- 

 tinctive characters. 



78. Should be Mactrella exoleta= Lutraria ventricosa, Gld., from type. 



81. Should be Gnathodm mendicus, Gld. 



83. T. Hindsii is distinct, teste Hani. 



85. T. argentata, Sby., 1835, = T. aquilatem, Desh., 1839. 



92-99. The generic name should be Callista. 



* A few of the duplicate sets having been sent in exchange to one of the principal 

 scientific dealers, he advertises a list of species in which he not merely alters the nomen- 

 clature, giving " Monoceros " cingulatum, " Pollia" insignis (with "Pisania" gemmatd), 

 " Trochus" olivaceus (with " Imperator" unguis), " Cerithiwn " montagui (for Cerithidea 

 Montagnei], Cytherea " dione" (for Dione lupinaria), "Astarte" DunJceri, " Cytherea" 

 Columbiensis, &c., but inserts Californian species (" ZizipMnus filosus" " Cardium 

 Nutali ") as though from the Gulf, and adds others not known at all in the West Coast 

 faunas, as " Columbella lamgata" " Patella plumbea," and " Chiton reticulata" All 

 these, with such shells as Olwa Cumingii, which belong to other regions on the Mexi- 

 can coast, would be accredited by the reader on the supposed authority of " Carpenter's 

 Catalogue." In these times it appears that naturalists must be content to resemble the 

 dealers in patent medicines, and guard the accuracy of their works ! With regard to the 

 Mazatlan collections (now scarce), none can be trusted unless they present an 

 seal, with the initials of the author. 



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