1S76.] Godwin- Austen — On tlie Operculated Landsliells. Ill 



in. 



Length from nose to insertion of tail, 4 - 75 



„ of tail, 4r 



„ of hind foot, 092 



„ of ear from orifice, 06 



A specimen of a rat obtained by Mr. V. Ball in the Satpura Hills and 

 presented by him to the Indian Museum, also belongs to this sjjecies. 



EXPLANATION OF PLATE X. 



Fig. 1. Head of Golunda Ellioti, Gray, from Sind (the face is represented much, too 

 convex). 2. Eight hind-foot. 3. Eight fore-foot (the intermediate tubercle 

 should have been drawn further away from the posterior (proximal) pair). 4. 

 Under view of the skull. 5. The skull and mandible, seen from the side. 6, 

 Upper view of the skull. 7. Incisors, seen from the front. 8. Molars of upper 

 jaw, right side. 9. Do. of lower jaw, right side. 



XII. — On tlie Cyclostomacea of tlie Dafla Hills, Assam. — JBy Major H. H. 

 Godwin- Atjsten", _F. B. G. 8., F. Z. $., Deputy Superintendent 

 Topographical Survey of India. 



(Eeceived June 24th ; — Eead August 2nd, 1876.) 



(With Plates VII & VIII, A, Figs. 1—6.) 



The expedition into the Dafla Hills in the winter of 1874 — 75 has added 

 very largely to our knowledge of the land- shells of that part of India. The 

 line of the Himalayas has been very well worked up to the neighbourhood 

 of Darjiling, and the researches of the Messrs. Blanford and the late Dr. Sto- 

 liczka have left I suspect very few forms undiscovered in that quarter, but 

 from thence to the Dafla Hills, a distance of 270 miles, we had received 

 nothing, so that when I found myself deputed for survey duty in these 

 more eastern hills, I anticipated a goodly haul of molluscan forms, and am 

 glad to say I have not been disappointed. The present list is confined to 

 the operculated group, numbering some 33 species ; of which 11 are new ; 5 

 had been originally described from Darjiling and have their range thus 

 extended far to the eastward ; 13 are well-known forms in the Khasi and 

 Naga hill-ranges south of the Brahmapiitra Biver ; and 3 or 4 are known 

 to extend thence to the Shan States in the Irrawaddy drainage-system. 

 The list of Helicidce will be given in a second paper, in the prepa- 



