288 BULLETIN OF THE 



Section KREBSIA Morch. 



Capulus illtortus Lamarck. 



Capulus intortus Lamarck, Orb., Moll. Cuba, I. p. 186, pi. xxiv. figs. 22, 23, 1842. 



This species was dredged by the Blake at Station 5, in the Gulf of Mexico, 

 in 229 fms. The Fish Commission has obtained it off Hatteras, in 63-107 

 fms., sand, at Stations 2595 and 2601 ; and it was collected by Hemphill on 

 the reefs at Key West. It is also in the Museum from the Bahamas Banks 

 and Barbados. The deep-water specimens were all dead. 



Section HYALORISIA Dall. 

 Capulus galea n. s. 



Plate XIV. Fig. 3. 



Shell thin, white, ovate , depressed, with a fine thin nearly smooth yellowish 

 epidermis which projects beyond the margin. The apex is nearly medially 

 placed, and extends but little behind the margin. The whole shell comprises 

 about two whorls, of which the nucleus comprises one and a half; it is very 

 small, dextral, and obliquely set; the exterior of the shell is smooth, almost 

 polished, with fine concentric little-elevated lines and faint radiating stria?; 

 margin thin, aperture ovate ; interior polished, white; the muscular impression 

 faint, extending well forward ; in front of the nucleus and nearly on a level 

 with it is a narrow arched lamina, horizontal, its greatest width about 1.0 mm. 

 in the median line; the distance in a straight line between the ends of the arc 

 is about 8.0 mm. ; the cavity of the shell extends above this lamina and behind 

 it into the narrower part of the spire. Max. Ion. of shell, 18.5 ; max. lat., 15.5; 

 alt., 5.5 mm. 



Habitat. Station 275, near Barbados, in 218 fms., sand, bottom temperature 

 52°.5 F. 



Soft parts: foot originally rounded and somewhat pointed behind, squared 

 off and narrower in front; mentum large, thin, smooth-edged, extending be- 

 yond the foot; head large, swollen; tentacles subulate, eye pedicels present 

 but destitute of pigment or eyes; excretory papillae in the sinus over the 

 head, on the right side; gill laminae numerous, large; proboscis long, slender, 

 split above and expanded near the tip; mantle edge smooth or not papillose; 

 no epipodial filaments behind the foot; body conical, the upper part crammed 

 with unextruded ova of a yellowish buff color. Not wishing to destroy the 

 beautiful exhibition of its proboscis made by this specimen, I have refrained 

 from dissecting it. 



The lamina above described is not an independent formation, like the deck 

 of a Crepidula, which to some extent it recalls at first sight, but rather a sort 

 of fold of the shell under the apex, the like of which I have observed in 

 April 10, 1889. 



