igiS.] H. H. Godwin-Austen : Mollusca^ VIII. 585 



Shell very depressedly conoid, flat on the base ; sculpture none, 

 very glassy ; colour with animal inside dark umber brown ; spire 

 low ; apex flatly rounded ; suture rather shallow; whorls 5, closely 

 wound ; aperture rather narrowly lunate ; peristome thin ; columel 

 lar margin very oblique. 



Size: major diameter 1175, minor ii'25, alt, axis 5'0 mm. 



The animal has a short right shell lobe and a very minute 

 left shell lobe, black in colour. The foot is divided, the central 

 area narrow, a broad peripodial margin, a hooked-like lobe over the 

 mucous gland. The visceral sac from the mantle edge backward 

 very darkly mottled grey black. The buccal mass very globose. 



Jaw very straight, narrow, with a slight central projection. 

 Central and admedian teeth as usual, the marginals unevenly bi- 

 cuspid, the longest point much exceeding the short one. 



In a spirit specimen collected by Capt. Oakes the teeth are 

 arranged 18.2.9. 1.9. 2. 18 or 29.1.29. 



The generative organs of No. 5991 (pi. liv, fig. 6) were well 

 extracted and mounted. The close wound shell leads them to be 

 much drawn out and elongate, particularly the penis as well as 

 the spermatheca, which contained several broken spermatophores. 

 These were mixed together and rather broken, having very long 

 flumes, with a single hook on the basal end (pi. liv, fig. 7). The 

 retractor muscle is given off from the junction of the long penis 

 sheath and the long epiphallus where there is an indication of a 

 coiled caecum, the retractor muscle is very short, given off not 

 direct from the circumference of the coil as is usually the case, but 

 from the end of a short appendage attached to it. 



The following is the description of another example from 

 Rotung, Abor Hills, No. 5996 (5. W. Kemp). 



Shell depressedly conoid, narrowly perforate, base flat, glassy ; 

 sculpture none ; colour ochraceous, brown on peristome ; spire low, 

 conic, flatly convex, apex rounded; suture shallow; whorls 6, 

 closely wound ; aperture narrowly lunate, oblique ; peristome thin ; 

 columellar margin oblique. 



Size: major diameter i2-o, minor H'O, alt. axis 5'0 mm. 



Only two specimens were obtained, but they are in excellent 

 condition and fully grown. The species also occurred among the 

 shells collected by Captain Oakes at the same place (No. 3156 

 B.M.). 



Macrochlamys ? rotungensis, n. sp., var. 

 (Plate liv, fig. 10). 



Locality. — Abor Hills, near the foot (G. F. T. Oakes, R.E.). 



The shell is similar to No. 5991, but the spire is higher and 

 more conic, being 5-5 mm. high. On first seeing this species I 

 thought it would prove to be a true Macrochlamys. Mr. Oakes had 

 very kindly packed some shells in a "bamboo chunga" or tube 

 (as I had suggested to him), and several, including a Sivella, three 

 Glessulas and two of Cyclophoms, were found to be living after 

 being put in wet moss near the fire. Five other specimens had 



