956 American H ork on Recent Mollusca in 1881. [December, 



preoccupied in ccelenterates, 181 2, and otherwise); JEga (P. JS. 

 dccussatula Pfr. p. 1 1 ; preoccupied in Crustacea, 18 15); Echo (P. 

 E. arguta, Pease, p. 1 1 ; preoccupied in insects, 1853); in the 

 second section Latia (P. L. ganymedes, Pfr. p. 12; preoccupied in 

 mollusca, 1849); Evadne {P. E. bulimoides, Lesson, p. 12; preoc- 

 cupied in Crustacea, 1846); Harmonia {P. H. gibba, Fer. p. 13; 

 preoccupied in insects, 1846); Matuta 1 (P. M. rosea, Brod. p. 14; 

 preoccupied in Crustacea by Fabricius); Sterope {P. S. cartcrien- 

 sis, Quoy and Gaim. p. 14; preoccupied in insects, 1850. The 

 types are illustrated by rather coarse wood-cuts in the text. 



This catalogue represents, better than any previous arrange- 

 ment, the relations of the different species to each other, and is 

 the result of some years conscientious study, aided by the best 

 existing collection of the shells themselves. It is, therefore, un- 

 fortunate that, at the last moment, as it were, it should have 

 been somewhat hastily printed. We are authorized, on the part 

 of the author (who as much as any one else regrets the circum- 

 stance), to state that he desires to withdraw, as far as lies in his 

 power, the names applied to the sections of Partula, which he is 

 now of the opinion are perhaps hardly important enough, from a 

 systematic point of view, to deserve naming ; and that he has in 

 preparation a new catalogue which will embody some revisions, 

 some new species lately described and but recently received by 

 Dr. Hartman, and in which he will adopt the classification indi- 

 cated by Dr. Pfeiffer in his posthumous work, "Nomenclator 

 Heliciorum Viventium," etc. 



A list of the Mollusca (two cephalopods, twenty-five gastero- 

 pods, twenty-three lamellibranchs) forms part of a paper by Mr. 

 R. Rathbun, on "The littoral marine fauna of Provincetown, 

 Cape Cod, Mass.," in the Proc. U. S. Nat. Mus, ill, pp. 1 16-133. 

 June, 1880. A reference to this paper was accidentally omitted 

 from this record for 1880. 



In Am. Nat., May, 1881, pp. 390-91, Professor R. E. Call de- 

 scribes a new Texan Unio, U. bollii Call, from the Colorado river, 

 Texas, collected by the late Professor Jacob Boll. It is perhaps 

 most nearly allied to U. quadra** Lea. We may here call atten- 

 tion, though not strictly within our limits, to his list in the July 

 number (p. 585) of the' recent land and fresh-water shells found 



