A. M Verrill on Ascidians from New England. i 



to the under side of stones ; wlien young subglobular. Tntei^ 

 ment firm and tough, but translucent, the tubes similar ti> i: 

 body ; the surface snioothish in young specimens, in okler on 

 slightly wrinkled, not fibrous, but somewhat 

 roughened with sparse granule-like papillae, ^. • 



to which a thin, imperfect coating of foreign ^^_sl^ 

 substances is sometimes attached ; in contrac- ^^ \ 



tion the surface is reticulated with wrinkles, \^^__^^ 

 with more elevated interstices. Tubes short 

 and stout, arising from the uppei 

 separated by a distance about e(juj 

 ceeding their diameters, 



i as lo 



,ent,the f J \J} 

 le. The ^--^ 



anal tube is about twice as long as the branchial and usually 

 swollen in the middle, rounded at the end, with a simple square 

 orifice, which in full expansion often becomes roundish. The 

 branchial tube has about the same diameter, and is short, cylin- 

 drical, with six short conical papilliB around the orifice. In 

 contraction the tubes form low verrucse. 



When living the color of the body is translucent, dull green- 

 ish or olive, between the tubes usually more or less feiTugi- 

 nous brown, or russet ; on the sides the viscera show through as 

 dull orange-colored and darker blotches. 



One of the larger specimens was, while living, -45 of an inch 

 long ; height -35 ; length of branchial tube 10 ; diameter 10 ; 

 distance between bases of tubes '08. 



Eastport, Me., under stones near low- water mark, not uncom- 

 mon,— Expeditions of 1868 and 1870. 



In Binney's edition of Gould's Invertebrata of Massachu- 

 setts, there are three figures, reproduced from Mr. Burkhardt's 

 drawings, which Mr. Binney refers somewhat doubtfully to 

 Olandula molds Stimpson, neither of which can represent that 

 species. Of these. Fig. 317 (PL xxii) may, perhaps, represent 

 the present species, but the apertures show no details. 

 Molgula papulosa Verrill, sp. nov. Figure 4, h. 



Body free, nearly globular, or transversely suboval, usually 

 slightly compressed laterally. Integument rather thin, translu- 

 cent, the surface, both of the tubes and body, entirely covered 

 by particles of sand, broken shells, foraminifera, etc., which 

 adhere firmly. When cleaned the whole surface is thickly 

 covered with prominent granule-like papillas and numerous 

 slender fibrous processes ; the granules are most conspicuous on 

 the tubes, where they usually have a rusty color. The tubes 

 are long, subequal, and their bases are separated by a space 

 usually greater than their diameters ; they are quite divergent, 

 both of them curving outward, the anal tube most abruptly. 

 The branchial tube is cylindrical, somewhat longer than the 



