120 



Fam. OocoRYTHiDAE Fischer. 

 Oocorys Fischer. 

 I. Oocorys Weberi n. sp. PI. X, fig. 2. 



Stat. 175. 2°37'.7S., I30°33'.4E. Ceram Sea. 1914 M. Fine grey and green mud. i Spec. 



Shell globosely-ovate, moderately ventricose, rather strong, white under a yellowish 

 epidermis; whorls about 5Y„, (nucleus ones worn) convex, with a distinct suture and with strong 

 spiral lirae, of which there are six on the penultimate whorl; 22 on the last one, including the 

 canal ; these lirae are separated by interstices, with a few exceptions about as broad as the 

 lirae themselves, the uppermost liration borders the suture and is separated from the second 

 one, by a broader concave interstice, giving it a channellike appearance; the interstices and in 

 some degree the lirae, are crossed by radiating striae, which are coarser on the upper whorls. 

 Aperture oblong-ovate, angular above, ending in a broad canal directed towards the left, 

 columellar margin with a rather strong layer of enamel, spread over the bodywhorl ; it is 

 grooved by the lirae and covered with microscopic granules; columella rounded, curved, strongly 

 bent to the left along the canal; right margin nearly regularly curved, with an angle, corres- 

 ponding to the second lira, and with an external rib, expanded and grooved interiorly; these 

 grooves e.xtend in the interior of the shell, which is porcellaneous. 



Operculum as in the typical species, reddish-brown, with a shallow groove along the 

 rieht marg-in. 



Alt. 38, lat. 27; apert. alt. incl. perist. 28, lat. ^Ys- 



This species is less globose than O. sulcata Fischer (Journ. Conch. 1883, p. 392) with 

 fewer lirae (6 in the penultimate whorl, instead of 8 to 1 2) the radiating striae seem to be 

 much weaker than in sulcata, at least than in the "Challenger" specimen, where the interstices 

 are much broader (Boorx Watson: "Challenger" Gastropoda, PI. 17, fig. 11). In Benthodolmm 

 f= Oocorys) abyssorzim Verrill (Transact. Connecticut Acad. Vol. VI, 1882 — 85, p. 177, PI. 31, 

 fig. 12) the spire is much higher if compared with the aperture, the lirae are much more 

 numerous, and the interspaces much broader, the canal much straighter. It appears rather 

 doubtful to me, that these specimens should belong to the same species, unless it be exces- 

 sively variable. I think the differences enumerated above, will be sufficient to separate shells 

 of such a remote provenience. ^ 



2. Oocorys sulcata Fischer. • 



Fischer. Journal de Conchyl. 18,83, P- 392- . . ' 



Manuel de Conchyl. p. 679, fig. 536. 



Tryon. Man. of Conch. Vol, VII, p. 267, PI. 6, fig. 42. • ./ - • 



Stat, 314. 7°36'S., iJ7°3o'.8E. Flores Sea. 694 M. Fine, sandy mud. i Spec. 



The only specimen is a dead, apparently not adult shell, the peristome not being developed. 

 I can find no characters to separate it from the atlantic species, described by Fischer, it ao-rees 

 in every aspect, as far as may be judged from the description and Fischer's figure, which is 



