352 bulletin: museum of comparative zoology. 



U. S. S. "Albatross," station 3376, off the Ecuador coast, in 1132 fathoms, 

 ooze, bottom temperature 36°. 3 F. U. S. N. Mus. 125,964. Also at station 

 3375, south of Malpelo Island, Gulf of Panama, in 1201 fathoms, ooze, tempera- 

 ture 36°.6 ; and station 3366, off Cocos Island, iu 1067 fathoms, ooze, tempera- 

 ture 37° r. A fragment, taken off Mazatlan, at station 3421, iu 995 fathoms, 

 mud, may possibly belong to this species. 



OANESA Jeffreys. 

 ? Ganesa panamensis Dall. 



Plate 19, figure 4. 



Ganesa ? panamensis Dall, Proc. U. S. Nat. Mus., 1902, 24, p. 554. 



Shell small, turbinate, smooth, ^vhitish with a few grayish flecks and streaks 

 ■which may not be normal to the shell, and about three and a half turgid whorls ; 

 nucleus eroded, apparently large aud subglobular ; subsequent wliorls polished, 

 smooth except for faint incremental lines, and a line at the anterior edge of the 

 suture, caused by the appression of the edge of the whorl but which looks like a 

 spiral thread ; on tlie base around a very small, oblique, chink-like umbilicus there 

 are spiral striae, much as in Molleria, to the number of twelve to fifteen ; base 

 rounded; aperture nearly rounded, slightly angular at the posterior commissure ; 

 outer lip sharp, thin, simple ; a thin wash of callus on the body ; pillar-lip cou- 

 cavely arcuate, slightly thickened, passing imperceptibly into the anterior margin 

 of the aperture ; throat slightly pearly, smooth, without liration or opercular ledge 

 such as is found iu Molleria. Operculum horny, thin, smooth outside, concave, 

 with about four whorls. Alt. of shell, 4.7 ; of last whorl, 4.3 ; of aperture, 3.2 ; 

 max. diam. of base, 4.5 mm. 



U. S. S. "Albatross," station 3393, in 1020 fathoms, mud; Gulf of Panama, 

 bottom temperature 36°.8 F. U. S. N. Mus. 109,029. 



The position of Ganesa Jeffreys is more or less uncertain, but the present shell, 

 though larger, resembles in general the species which Jeffreys included iu liis 

 group ; and there seems to be no other group defined into which this little shell 

 would fit more ajipropriately. 



Fissurellidae. 



Emarqinulinae. 



PIINCTVIRECLA Lowe. 



€raiiop*»is A. Adams. 



Cranopsis A. AdamB, Ann. Mag. N. Hist., 1860, ser. 3, 5, p. 602 (type, C. pelex 

 Adams) ; Fischer, Man. ile ConcJiyl., 1887, p. 802 ; Dall, Blake Report, Gastr., 

 1889, p. 404 ; Tilsbry, in Tryon, Man., 18'j0. 12, pp. 202, 240. 



