PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 391 



and longer, and their clusters are less numerous and less crowded. In 

 case it be tbought necessary to unite the two forms, Couthouy's name 

 has priority. 



Tergipes despectus (Jolinst.) Alder & Hancock. 



The genuine despectus was distinguished from G. exigna by Mr. J. H. 

 Emerton, at Salem, Mass., in 1879, when he made characteristic draw- 

 ings of both and preparations of the odontophores, which I have exam- 

 ined. During the present year he has found the former near Newport, 

 R. I., on hydroids {Ohelia) at low- water. The species described and 

 figured by Gould (Binney's edition) under this name is really the Gal- 

 mnia exigua Alder & Hancock, differing widely in its dentition, there 

 being three rows of teeth, instead of the single row, seen in Tergipes. 

 But the T. despectus of my report on Invertebrates of Vineyard Sound, 

 1873, was correctly named. Both species are found under the same con- 

 ditions, but, according to Mr. Emerton, G. exigua is found in the spring 

 and early summer, while T. despectus occurs later in the summer and 

 in autumn. 



Acmaea rubella ? (Fabr.). 



Tectura riihcUa G. O. Sars, Moll. Reg. Arct. Norv., p. 121, pi. 8, figs. 5 «, ft; pi. 

 • ii, fig. 11 (dentition). — Jefli-eys, Ann. and Mag. Nat. Hist., for March, 

 1877, p. 231. 



One specimen, without the animal, was dredged at station 894. It 

 ai)pears to agree closely with the species referred to, except that the 

 apex is not obtuse, and its color is pale yellowish white. There is no 

 sculpture except irregular and rather distinct lines of growth. The 

 apex is acute, bent directly backward, and situated at about the pos- 

 terior fourth. The base is oblong-oval. Length, 5.5"""; height, 2.75"'"'. 



HETEROPODA. 



Carinaria Atlantica Ad. &, Reeve (?). 



Fragments occurred at station 865. They may have belonged to C. 

 Mediterranea. 



Atalanta Peronii Lesueur. 



D'Orbiguy, Voy. Am6r. M6rid., Moll., p. 171, pi. 12, figs. 1-15; Hist. I'lsle de 

 Cuba, Moll., i, p. 102, 1853. 



I^ear George's Bank, latitude 41° 25' north, longitude 05° 5' to 65° 30' 

 west (Messrs. S. I. Smith and O. Ilarger, 1872). 



PTEROPODA. 



Although the Pteropods are all, projierly speaking, oceanic species, it 

 is undoubtedlj^ true that a certain group of species will be found to be 

 characteristic of the waters adjacent to each coast. Hitherto those ob- 

 served and recorded from near the shores of New England have been 

 chiefly northern or arctic species, which follow the course of the arctic 

 current along our coast. For this reason, in the winter and spring, the 

 beautiful Clione papilionacea is frequently found as far south as Vineyard 



