I 



u_. 



o 



68 



not ano-ular. Anterior aperture slightly oblique, oval, the margin on the outer curve flattened. 



Apex slightly dorso-ventrally compressed, with three 

 pair of slits, forming six teeth : one on the outer 

 curve, one on the inner curve and two pair ot 

 lateral slits. The tooth on the inner curve is 

 largest and ver\- short ; of the two lateral teeth 

 the one next to the inner curve is the biggest, 

 while the one next to the median tooth on the 

 outer curve is very small but comparatively sharp. 



Length 22 mill., dorso-ventral diam. of apert. 1,9 mill., lateral diam. of apert. 2,5 mill., lateral 



diam. of apex 0,8 mill. 



Greatest diameter of shell 3,8 mill. 



Remarks. This shell greatly resembles C. spedabilis Verrill, a deep sea species of the 

 Western Atlantic, but to my regret I have not been in the opportunity of comparing the two. 

 They differ however in the apical characters. 



Fig- 32. 



Ant. apert. and inner curve of 



Cadultis Uexaschistits. 



Fig. 32rt. 

 Apical orifice seen from the 

 top of Caditlus he.xaschistiis. 



13. Cadtdus mag7uis n. sp. PI. YI, fig. 54. 



Stat. 45. 7°24'S., iiS°i5'.2E. Flores Sea. 794 Metres. Fine grey mud. i Spec. 

 Stat. 88. o°34'.6N., ii9°8'.sE. Celebes Sea. 1301 Metres. Fine grey mud. 2 Spec. 

 Stat. 300. io°48'.6S., 123° 23'.! E. Timor Sea. 918 Metres. Fine grey mud. i Spec. 



Diagnosis. A large white shell very like the previous, well and evenly curved, smooth 

 and glossy, with inconspicuous growth striae. "Equator" very near the anterior 

 aperture at a distance of about 1,5 — 2 mill. Gibbosity visible on both convex 

 and concave curve, but better visible on the convex curve, where it is slightly 

 angular. There is no sudden flattening on the convex side as in hexaschishis, 

 but the shell narrows evenly toward the mouth. Anterior aperture rather oblique 

 (more oblique than the equator), subcircular, the margin on the outer curve a 

 little more arched than on the inner. Ape.K circular, probably with 4 or more 



incisions, but only one specimen has a small lateral tooth left, the rest being imperfect. 



Length 25 mill.; diam. of apert. 3 mill., greatest diam. 3,3 mill., diam. of apex 1,2 mill. 



Fig. 33. .\nt. apert. 



and inner curve of 



Cadulus maisnus. 



14. Cadiilns lottgiloSatus n. sp. PI. VI, figs 55, 56. 



Stat. 133. Anchorage oft" Lirung, Salibabu Island up to 36 Metres. Mud and hard sand. 3 Spec. 



Diagnosis. Shell near the apex slightly dorso-ventrally compressed, yellowish, trans- 

 parent, with many opaque bands; hardly inflated, the bulging only faintly 

 distinguishable on the concave curve; convex side regularly and moderately 

 curved, very gradually tapering toward the anterior aperture. Greatest 

 diameter at about 4 mill, distance from the mouth. Peristome thin and 

 very oblique nearly circular the dorso-ventral diameter being a little longer 

 than the lateral diameter. Apical orifice dorso-ventrally compressed, apex split by four rather 



O 



Fig. 34- 



.\nterior aperture and apex 



of Cadulus loii'ilobatus. 



