682 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



rad, was accompanied by a short description of recent specimens from 

 Ehode Island and Xew Jersey. He gave G. convexa Say as a synonym, 

 however, remarking- that it " appears not to differ from the C. convexa 

 of Say, hut I have changed the name because M. Brogniart had pre- 

 vionsly applied it to a very dissimilar species." More recently, how- 

 ever, he has indicated his belief that the two are distinct (Catal. Miocene 

 Shells, in Proc. Phil. Acad., vol. xiv, p. 575, 1862), although he recog- 

 nizes the " Sayana 1 ' as a Miocene shell, but he has not pointed out the 

 differences, if any exist, so far as known to me. Should the recent shell 

 prove to be distinct from the fossil one described by Say, it should 

 therefore bear the name Callista Sayana. 



In this species the animal is white, or pale salmon-color. The border 

 of the mantle sometimes protrudes considerably beyond the edge of the 

 shell, and is delicately undulated or frilled; the siphon tubes, in full 

 expansion, are smooth and rather longer than the shell, and are united 

 quite to the ends; the orifices are simple, without apparent papilla?, 

 and the branchial is considerably larger than the other; a well-marked 

 groove extends along the whole length of the siphon, indicating the 

 partition between the tubes. 



Tottenia gemma Perkins. Pla>te XXX, fig. 220. (p. 359.) 



Proc. Boston Soc. Nat. Hist., vol. xiii, 1869 (in errata) ; by error, Totteniana 

 (p. 148). Venus gemma Totten, Amer. Jour. Science, vol. xxvi, p. 367, figs. 2a, cl> 

 1834. Gemma gemma Deskayes, Catal. Conch. Biv., British Museum, p. 113, 

 1853 ; H. and A. Adams, Genera, vol. ii, p. 419, Plate 107, fig. 3. Gemma Tot tod 

 Stimpson, Check-List, p. 3, 1860. 



South Carolina to Labrador. Very abundant in Long Island Sound, 

 Buzzard's Bay, Vineyard Sound, Xantucket, and Massachusetts Bay ; 

 common in Casco Bay, aud at Grand Menan Island. Xova Scotia ( Willis). 

 Prince Edward's Island (Dawson). Indian Harbor, Labrador (Packard). 

 Fort Macon, Xorth Carolina (Cones). 



An allied species (T. sphcerica H. C. Lea, sp.) occurs in the .Miocene of 

 Virginia. 



Tottenia Manhattensis Verrill. 



Venus Manhattensis Prime, in Jay's Catalogue of Shells, ed. iv, supplement, p. 

 466,1852. Venus (Gemma) Manhattensis Prime, Annals Lye. Nat. Hist. N. Y., 

 vol. vii, p. 482 (figure), 1862. Gemma Manhattensis Gould, Invert., ed. ii, p. 138> 

 fig. 449. 



Xorth Carolina to Vineyard Sound. Hell Gate (Prime). . Greenport 

 and Huntington, Long Island (S. Smith). Xear Xew Haven, rare. 

 Fort Macon, Xorth Carolina (Yarrow). 



I have seen but few specimens of this shell, and am not fully satisfied 

 that it is distinct from the preceding. Its color is not constant, some 

 specimens being pale straw-color, others purplish. Mr. Prime originally 

 described it as white. 



