-o 



68 



not angular. Anterior aperture slightly oblique, oval, the maroin on the outer curve flattened. 



Apex shghtly 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 shts. The tooth on the inner curve is 

 largest and very 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. spcctabilis 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. .ipert. and innev curve of 



Cadulus hexaschistiis. 



Fig. 32 ö. 

 Apical orifice seen from the 

 top of Cai/iiliis hcxaschistits. 



13. Caduhis niagnns n. sp. PI. VI, 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'.5E. Celebes Sea. 1301 Metres. Fine grey mud. 2 Spec. 

 Stat. 300. io°48'.6S., I23°23'.i 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 hcxaschistus, 

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



Fig- 33- Ant. apert. 



and inner curve of (more obliquc thau the equator), subcircular, the margin on the outer curve a 

 CaduiHs magnus. jj^^j^ mox& arched than on the inner. Apex 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. 



14. Cadiibis longiloèahis n. sp. PI. VI, figs 55, 56. 



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



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



Q ^ 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 



I'"ig. 34. 



Anterioi- aperture and apex diameter at about 4 mill. distauce from the mouth. Peristome thin and 



of Cadulus longiiobatus. yery obliquc nearly circular the dorso-ventral diameter being a little longer 



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



