MOLLUSCA OF INDIA. 67 



The form of the shell is more like that of Austenia (^1 Dunjella) 

 salius of Teria Ghat, at the foot of the Khasi Hills, than any I am 

 acquainted with (vide Vol. I. Pt. IV. PI. XXXVIII. fig. 1), hut the 

 Sumba shell is more globose. The anatomy of A. salius has never 

 been described and is a desideratum. For this we must wait some 

 time, I fear, as only a very keen collector of these small molluscs will 

 take the trouble and discomfort of the search, which to be successful 

 must be made at the height of the rains, in sweltering heats, and 

 amid innumerable leeches. 



After soaking the specimen which contained the dried-up animal 

 I was enabled to make out the followiug interesting points of 

 structure : — Animal is very pale in colour ; above the mucous 

 gland there is a long overhanging lobe, recalling the similar process 

 in Sempcr's genus Macroceras of Samar, Cebu, and Leyte. An 

 ample right shell-lobe (fig. G h) extends over the right margin of the 

 shell. With such a specimen little else could be described. 



The jaw (fig. 7) is much arched above, and very convex on the 

 cutting-edge. 



The lingual ribbon f figs. 8, 8 a) is very broad, the teeth arranged 

 thus 



130 . 4 . 6 . 1 . 6 . 4. 130 



140 . 1 . 140. 



In over 85 rows. 



The central tooth (fig. 8) is long pointed, with two side cusps 

 about the middle; the side teeth are broad, with cusp on the outer 

 margin, followed by narrow curved bicuspid laterals ; while the 

 outermost of all (fig. 8 h) are pectiniform, similar to what we find 

 in typical Bim/cUa. 



This is another of the many fine species collected in the islands 

 of the Malay Archipelago by Mr, W. Doherty. We cannot too 

 strongly admire his labour, a)id thank him and congratulate him on 

 the good work he performed. I can only regret and say how sorry 

 I am that the publication of results has been so unavoidabl}' slow. 



The interest attaching to this species is very great, and for this 

 reason I introduce it here among the Indian fauna. We have 

 presented to us a form directly intermediate between the genus 

 under review and Cri/jjtosoma, as shown in the odontophore. For 

 whereas in DurgeJla all the teeth from the centre outward are very 

 numerous, all alike, and pectiniform, we have here a radula of 

 similar breadth, with a broad central band of large broad teeth like 

 those of Macroclilamys and its allies, succeeded by teeth such as 

 Cryptosonia presents, and followed by others with pectinated edges. 

 The very long horn-like process at the extremity of the foot is a 

 marked specific character. 



Great interest now centres on the generative organs when tney 

 shall come to be examined, as to whether they are of the type of 

 Parmarion, Microparmarion, &c., or of Durgella or MacrocJilamys. 

 I now place it with a query in Durr/ella, but it may ultimately have 

 to be placed in a new subgenus of its own, but to do so without 

 further material would be altogether premature. 



