Molluscan Fauna of New England. 289 
Molgula pellucida V. Plate v1i, figure 2. 
Diameter of the largest specimens about 1 inch. 
. Bay,—L. Agassiz; Long Island,—Coll. Peabody Acad- 
emy of Science; Bird Shoal near Beaufort, N. C..—Dr. H. C. 
Yarrow. 
Mr. Binney has published characteristic colored figures of 
this species under the name of M. producta Stimp., which is a ~ 
very different, sand-covered species, (plate viii, fig. 6). 
Hugyra glutinans V. 
Cynthia glutinans MOll., Naturh. Tidsskrift, iv, p. 94, 1842. 
Asciidiopsis complanata V., gen. nov. Plate vill, fig. 8. 
Ascidia complanata Fabr.; Verrill, this Journal, i, p. 98, fig. 11, 1871. 
Ascidia callosa, Stimp., Proc. Boston Soc. Nat. Hist., vol. iv, p. 228, 1852, 
The remarkable and complex structure of the gill in this 
Species seems to require its separation as a distinct genus. A 
“tn all portion of the gill is represented in the figure, much en- 
Aleyonidium ramosum Verrill, sp. nov. Plate VHI, fig. 10. 
_Much branched, when full grown; the branches irregularly 
dichotomus, usually crooked. Surface glabrous, smooth, or 
nearly so, the cells rather small and crowded ; zooids with six- 
teen slender tentacles. Color ashy brown, or dull rusty brown. 
eter of branches mostly ‘20 to 25 of an inch. Height 
10 to 15 inches. 
Am. Jour. cable Series, Vou. ITI, No. #6.—AprRIL, 1872. 
