1881.] Mollusca of tJ/e Lido- Malayan Fauna. 1 r, 5 



PlECOTBEMA RAPAX, Dohrn. 

 Malak. Blatter, 1850, Arabia, long 6, diam. 3 mil ; Jickcli, Moll Nord Afv., pi 7, 

 fig- 7. 



var. ritoDuc r H., nov. PL V, Fig. 7. 



A single specimen of this interesting form was found by Mr. W. T. 

 Blanford at Annesley Bay ; the spire is more cylindrical and markedly more 

 produced in proportion, the last whorl less convexly swollen than in the 

 typical form. The minute, longitudinal striae, under a lens, are more 

 distinct than usual. Anfr. 7 ; long. 5^, diam. 2\ mil. 



Maegarta melanioides, Nevill, PL V, Fig. 1. 

 J. A. S. B., 1877, p. 30, Lake Tali in Yunnan, anfr. 4, long. 67, diam. 47 mil. 

 I have nothing to add to my original description of this remarkable 

 form, altogether unlike any other known mollusk. I take this opportunity 

 of recording the obligation I am under to my friend Mr. J. Scliaumbero* 

 of the Geological Survey of India, for the great trouble he has been good 

 enough to take in improving the rather crude drawings of this and of some 

 other species represented in the plates accompanying this paper. This 

 species has also been figured by Dr. J. Anderson, F. R. S., in his lar^e and 

 valuable quarto on the Zoology of Yunnan. 



Amptjllaeia stoliczkana, Nevill, Pi. VI, Figs. 11 and 11 A. 

 Cat Moll. Fasc. E, 1877, Penang, alt 54, diam. 41 mil. 



I have not met with any fresh specimens of this interesting species ; 

 its nearest ally appears to be Reeve's A. javanica, which apparently repre- 

 sents an immature specimen ; it is also not unlike his A. turbinoides from 

 Australia (?). 



P ALUMNA HUNGERFORDIAtfA, n. sp. 



Closely allied to P. jullieni, Deshayes, from Cambodia, the type of 

 Mekongia, Crosse and Fischer. 



Imperforate, spire short (as in P. jullieni), the large whorl propor- 

 tionately large and tumidly swollen, scarcely (if at all) subangulate at the 

 periphery ; whorls spirally ribbed, ribs numerous, flat, more or less inclined 

 to become obsolete ; columella remarkable, being very short, almost per- 

 pendicular, pure white, very broadly and characteristically reflected. 



Long. 33, diam. 26 mil. 



Hab. — Canton. 



Type, Indian Museum j also in coll. Surgeon-Major R. Hungerford. 



