I92I.] S. L. HoRA : Fish from the E. Himalayas. 739 



A (type). B. 



Depth of body ... ... ... .. 67 78 



Diameter of eve ... ... ... . I'3 i'3 



Length of snout ... ... ... 5"o 5"6 



Interorbital width ... ... 3'2 37 



Length of caudal peduncle ... ... io'8 I3'5 



Least height of caudal peduncle ... ... ... 27 2*2 



Distance fj;om tip of snout to anterior origin of dorsal fin i/'o iS'2 

 Distance from base of caudal fin to anterior origin of dor • 



sal fin .. ' ... 28'5 32-0 



Distance from tip of snout to anal opening ... ... 24*0 26*8 



Distance from base of caudal fin to anal opening ... 2i'5 23^4 



Length of dorsal spine .. ... ... il'2 I3"5 



,, ,, pectoral spine . . ... 11 '6 I2'8 



Length of ventral fin ... .. 6'8 7'o 



., anal fin ... ... ... 7'o S'O 



ErctJiiMes elongata is abundantly distinct from the remaining 

 species of this genus and is easily recognised by its elongate form and 

 short scapular processes. It also possesses a well-marked tubercle 

 in the middle of the upper jaw. In other species of the genus 

 the scapular processes are long and the skin covering the belly is 

 smooth, but in E. elongata the scapular processes are short and 

 the skin on the under surface is thrown into grooves and ridges. 

 These longitudinal folds of skin extend from between the bases of 

 the pectoral fins to the ventrals ; they appear to have a definite 

 biological significance, and are probably used by the fish in adher- 

 ing to rocks and stones in rapid running waters. 



The fish is black in colour throughout with the exception of 

 the chest, which is dirty white. The fins are marked with white 

 bands. 



Laguvia, gen. nov. 



The genus Laguvia may be characterized as follows : — 

 The head and body are slightly depressed and the skin cover- 

 ing the belly is corrugated, suggesting an adherent function. The 

 pectoral fins are provided with strong denticulated spines; the 

 dorsal spine is strong and bony and ma}' or may not be serrated 

 anteriorly. The adipose dorsal is short but well marked. The 

 mouth is subterminal and is surrounded by thick lips. There are 

 eight barbels, one pair of nasal, one pair of maxillary and two 

 pairs of mandibular. The nostrils are situated close together and 

 are separated by a flap bearing the nasal barbel. The gill-open- 

 ings are wide aird almost meet each other in the middle on the 

 under surface. The occipital and cubito-humeral process are pre- 

 sent. There is a short scapular process which may or may not be 

 followed by bony tubercles posteriorly. The eyes are minute and 

 are situated on the dorsal surface of the head. The air-bladder is 

 divided into two lateral chambers which are not enclosed in bone. 

 The new genus comprises small fish inhabiting rapid running 

 waters at the base of mountains. It closely resembles Erethistes, 

 Miill. and Trosch., from which it can be readily distinguished by 

 the nature of its gill-openings which are very wide. From the 

 genus Glyptothorax it differs in the possession of scapular, pro- 



