370 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [664] 



ACTION PUNCTO-STRIATA Stimpson. Plate XXV, fig. 165. 



Shells of New England, p. 51, 1851 ; H. and A. Adams, Genera, vol. ii, p. 5. Tor- 

 patella puncto-striaia C. B. Adams, Boston Jour. Nat. Hist., vol. iii, p. 323, 

 Plate 3, fig. 9, 1840; Gould, Invert., ed. i, p. 245, tig. 188 ; ed. ii, p. 224, fig. 515. 



Cape Cod to South Carolina. Vineyard Sound, and Buzzard s Bay, 

 not uncommon ; Long Island Sound, rare j Huntington and Greenport, 

 Long Island (S. Smith). 



DORIDELLA Verrill. 



Body smooth, oval, convex. Dorsal tentacles retractile, without 

 sheaths. Head prominent, the lateral angles prolonged anteriorly as 

 short oral palpi or tentacles. Foot broad, cordate. Branchiae tufted, 

 situated near the posterior end, on the right side, in the groove between 

 the mantle and foot. 



DORIDELLA OBSCURA Verrill. Plate XXA r , figs. 173 a, b. (p. 400.) 



American Journal of Science, vol. 1, p. 408, figs. 2, 3, November, 1870. 



Body broad oval, 7.5 Ium long and 5 nim broad ; back convex, smooth. 

 Foot broad, cordate in front. Oral disk broad, emargiuate or with con 

 cave outline in front ; the angles somewhat produced, forming short, 

 obtusely pointed, tentacle-like organs, which in extension project beyond 

 the front edge of the mantle. Dorsal tentacles small, stout, retractile. 

 The branchiae consist of a tuft of slender filaments, usually concealed 

 by the edge of the foot. Color of body dark brown, lighter toward the 

 edge, as if covered with nearly confluent blackish or brown spots, the 

 whitish ground-color showing between them; foot, oral disk, and dorsal 

 tentacles white ; the central part of the body, beneath, with a three-lobed 

 yellow spot due to the internal organs. Young specimens are flesh- 

 color or yellowish brown above, specked with darker brown. 



Vineyard Sound and Long Island Sound to Great Egg Harbor, New 

 Jersey. Savin Rock, at low-water, under stones; oif South End, 4 to 5 

 fathoms, shelly. 



NUDIBRANCHIATA. 

 DORIS BIFIDA Verrill. Plate XXV, fig. 176. (page 307.) 



American Journal of Science, vol. 1, p. 406, 1870. 



Outline broad oval, widest anteriorly, about 25 mm long by I2 mm broad, 

 in extension ; back very convex, mantle covered with numerous, scat 

 tered, small but prominent, pointed papillae. Tentacles rather long, 

 thickest in the middle, the outer half strongly plicated with about twenty 

 folds, but with a smooth tip, the base surrounded by small papilla). 

 Gills retractile into a single cavity, united together by a partial web, 

 deeply frilled, much subdivided, bipinnate, the subdivisions fine and 

 slender. Foot very broad, in extension projecting back beyond the 

 mantle about a quarter of an inch, slightly tapering, rounded and 

 slightly notched at the end. Oral disk or veil crescent-shaped, the front 



