734 LIEUT.-COL. GODWIN-AUSTEN AND MR. NEVILL ON [Dec. 2, 



face and by indications of connecting ridges between the eyes, pos- 

 terior pair of eyes slightly wider apart than the anterior pair, of about 

 equal size ; lateral eyes placed obliquely, the anterior eyes fully 

 twice the size of the central ones and four times as large as the pos- 

 terior lateral ones ; pectoral shield cordiform •, falces smooth, with 

 wavy external margins and hairy internal surfaces ; maxillae long, in- 

 arched, smooth ; abdomen rounded, slightly pointed behind, and almost 

 flat below. Legs very short, their relative length 2, 1,4,3 ; the anterior 

 pair as follows — femur 2 millimetres, tibia including knee-joint 2|, 

 tarsi 2 ; second pair — femur 2j, tibia 2\, tarsi 2 ; third pair — femur 

 1 1, tibia 1 \, tarsi 1 \ ; fourth pair — femur 2, tibia 1 §, tarsi 1 h ; the legs 

 entire therefore being — first pair 6£ millimetres, second 6f, third Ah, 

 fourth 5Jr. Length of cephalothorax and abdomen together 8 milli- 

 metres, of abdomen alone b\. 

 Antananarivo (Kingdon). 



EXPLANATION OF PLATE LVIII. 



Fig. 1. Epcira slateri, Butl., p. 730. 

 1 a. , profile view. 



1 b. , falx. 



2. locuples, Butl., p. 732. 



2 a. , profile view. 



2 b. , falx. 



3. Drassus malagassicus, Butl., p. 730. 



3 a. , profile view. 



36. , palpus. 



4. Coerostris slygiana, Butl., p. 731. 



4 a. , profile view. 



4 b. , view of abdomen from behind. 



5. paradoxa, Dolesch, p. 732. 



5 a. , profile view. 



5b. , view of abdomen from behind. 



6. Pyresthesis cambridgii, Butl., p. 733. 



6 a. , profile view. 



6 b. , caput with eyes. 



6 c. , falx. 



5. Descriptions of Shells from Perak and the Nicobar 

 Islands. By Lieut.-Col. H. H. Godwin-Austen, F.Z.S., 

 and G. Nevill, C.M.Z.S. 



[Beceived November fi, 1879.] 



(Plates LIX. & LX.) 



The shells from Perak described in this paper were collected by 

 Surgeon-Major E. Townsend, then with H.M. 3rd Regt. Buffs, on 

 the expedition against the rebellious Malays in 1875-76. Some of 

 the smallest were found in the caves of Buket Punong or Pondong, 

 an isolated conical limestone hill about 1000 feet high. The col- 

 lection brought to Calcutta was a very extensive and most interesting 

 one, proving the richness of the land-molluscan fauna of that portion 

 of the Malay peninsula, and how much more still remains to be 



