A. M Verrill on Ascidians from New Etigland. 



\ abdomen 



taken together, but often exceeds it. The stomach (e, fig. 22) is 

 short and broad, with numerous longitudinal, glandular ridges. 

 The intestine is large, and usually contains from 7 to 10, large, 

 blackish foecal pellets. 



The branchial orifice (6, fig. 22) is surrounded by six, small, 

 tapering papillae. The anal orifice is somewhat bilabiate, the 

 lower lobe being stout and broad, the upper longer and tapering. 



The color of the masses during life, is pale, translucent, bluish 

 white ; the branchiae are light yellow ; the stomach dark orange ; 

 ovaries yellowish white; the eggs containing embryos bright 

 orange-yellow. 



Eastport Harbor and Grand Menan, low-water under stones, 



to 60 fathoms, stony and shelly bottoms, attached to stones, 



shells, ascidians, etc., common,— Exp. of 1861, '63, '64, '68, 70. 



Amouroucium pallidum Verrill, sp. nov. 



Masses sessile, hemispherical or subglobular, usually attached 

 by a large base. Surface generally evenly rounded, sometimes 

 irregular in large specimens, smoothish, but thinly covered with 

 minute, firmly adherent particles of fine sand, which are im- 

 bedded in the surface of the common tissue and scattered 

 throughout its substance. The texture i; 



latiuous than in the preceding species. The cloacal openings 

 ' and irregularly placed, except in small speci- 

 mens, which usually have but one large central opening. The 



animals are much smaller and more numerous than m the pre- 

 ceding species, often forming somewhat circular groups of six 

 or eight individuals around the cloacal openings ; outside of the 

 circular groups they are usually irregularly scattered, but some- 

 times form linear series of eight or ten, and in young specimep 

 with but one central opening they often form a larger outer cir 

 cle, which is near the margin, more or less irregular, and com- 

 posed of numerous individuals. Except in their much smaller 

 size, the animals resemble those of the preceding species, though 

 they are perhaps a little shorter and thicker in proportion ihe 

 post-abdomen, in all the numerous examples examined, was 

 small, thick, obtuse, and decidedlv shorter than the abdomen 

 and thorax taken together; it contains few ovules m two series, 



and often terminnff^c in twr. aL 



m di 



often terminates in two slender papilla, 

 ibe larger specimens of this species are -50 to -76 ot s 





diameter, but many are mjch smalle 

 ^^»; tne largest one examined was 15 long by '00 oi a 

 1 diameter. 



