2 Mr. W. S. Dallas's Description 



The species appears to form the type of a new genus, which I 

 have called Urochela, in allusion to the singular claw-like pro- 

 cesses which form a portion of the male generative organs, and 

 is probably closely allied to the singular genera Urolabida and 

 Urostylis of Mr. Westvvood, which present the same character in 

 a greater degree. 



Genus UROCHELA. (PI. II. fig. 1.) 



Head (fig. 1 a) small, short, broader than long, suddenly nar- 

 rowed immediately before the eyes ; the three lobes produced, 

 distinct, rounded ; the central lobe longer than the lateral ones. 

 Eyes large, prominent, globose. Ocelli moderate, situated close 

 to each other, at the back of the head. Antennce (1 a) as long? 

 or longer? than the body, of five joints?, inserted on a tubercle, 

 which appears beyond the margin of the head, immediately before 

 the eyes ; first joint thickest, as long as the thorax, cylindrical, 

 thinner at the base; second about half as long again as the first, 

 slender; third joint shortest, about half as long as the first, and 

 a little thicker than the second ; fourth about as long as the first, 

 slender; fifth wanting? The antennae are thickly clothed with 

 fine short hairs, which are longer on the first joint. Rostrum 

 (fig. 1 b) inserted close to the anterior margin of the head, short, 

 reaching only to the middle of the medipectus, of four joints, the 

 first and third nearly equal, the fourth shorter, the second longest; 

 the first joint enclosed at its base in a small groove of the under- 

 side of the head. Labrum reaching the middle of the second 

 joint of the rostrum, transversely striated. 



Body broad, very flat above, convex beneath. Thorax tra- 

 pezoidal, slightly margined laterally, much narrowed in front, the 

 anterior margin being considerably narrower than the head and 

 eyes. Scutellum rather short, triangular, with the sides nearly 

 straight, and the apex acute. Elytra (fig. If) ample; the coria- 

 ceous portion larger than the membranous, with the basal half 

 of its outer margin much elevated; the membrane reaching be- 

 yond the apex of the abdomen, containing six nervures, of which 

 the outer one is very short, placed in the basal angle ; the other 

 five all spring from a common footstalk. Abdomen convex be- 

 neath, the margins thin, projecting a little beyond the elytra on 

 each side. Anal apparatus in the male (fig. 1 e) consisting of two 

 claw-like processes, which project nearly as far as the posterior 

 angles of the terminal segment of the abdomen, with their points 

 turned outwards ; a small triangular plate is situated at the base of 



