567] INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 273 



both ends of the second and third segments of the peduncle, and the 

 antenna) are obscurely banded and tinged with a lighter color. 



Length, about 6 mm . 



It inhabits tubes constructed of grains of sand. 



In deep water off Vineyard Sound and Buzzard s Bay. 



UNCIOLA IRRORATA Say. Plate IY, fig. 10. (p. 340.) 



Loc. cit., p. 389, 1818 ; Stimpson, Marine Invertebrata of Grand Manan, p. 45. 



This species grows to a much larger size than described by Say, being 

 frequently 15 mm in length. 



New Jersey to the Bay of Fundy, and probably much farther north, 

 and from low water to more than 400 fathoms in depth. 



HYPERIA, species, (p. 439.) 



A large species of Hyper ia was several times found upon the large 

 red jelly-fish (Cyanca) in Vineyard Sound. The same species is com 

 mon in the Bay of Fundy, but has not been identified with certainty. 



Another species of Hyperia was taken at the surface, in company 

 with Salpa, in Vineyard Sound, early in September. 



PHRONIMA, species, (p. 439.) 



A species of this peculiar genus was taken at the surface, in company 

 with Salpa, off Gay Head, early in September. It is closely allied to 

 the P. Atlantica of Guerin. According to Professor Yen-ill s notes it 

 is, in life, translucent, scarcely tinged with yellowish white, and nearly 

 invisible in the water ; the eyes red. 



Another form allied to the last was taken with it, and is possibly the 

 male of the same species, but differs from it, and from the characters 

 usually assigned to the genus, in possessing well-developed antennulse. 

 In life, according to Professor Verrill, it was translucent whitish, the 

 body spotted with dark brown, and the eyes blackish. 



THYROPUS, species. 



A single specimen of a species of this genus was taken with the Phro- 

 nima and Salpa, off Gay Head, early in September. 



. CAPRELLA GEOIMETRICA Say. Plate V, fig. 20. (p. 480.) 



Loc. cit., p. 390, 1818; Bate, Catajpgtte Ampliip. Crust. British Mas., p. 357, PI. 

 56, fig. 8. 



North Carolina to Vineyard Sound, especially among eel-grass ; very 

 abundant in Great Egg Harbor, New Jersey, April, 1871. 



CAPRELLA, species, (p. 31G.) 



A larger species of Caprella, which is common in the Bay of Fundy, 

 was frequently dredged in Vineyard Sound. 



ISOPODA. 



SCYPHACELLA Smith, gen. iiov. 

 Near Scyphax, Dana.* Antenna composed of eight distinct segments, 



* U. S. Exploring Expedition, Crust., p. 734, PL 48, n. 5. 



