new Species of Diploptera. 103 



Length 7 mm. 



Hah. Tukvar, Sikhim (4000 ft.), Bingham Coll.; 1 ? . 



One of the few species of this subgenus from Asia, the 

 headquarters of Symmorphus, Wesm., being Europe and 

 America. 



Odynerus (Ancistrocerus) assamensis, sp. n. 



Niger, rugose punctatus ; prothoracis margine antico, tegulis, post- 

 8cutello, abdominis segrnentorum 1, 2 margine postico rufo- 

 ferrugineis ; clypeus niger, flavo-maculatus. 



$ . Black ; a spot at base and two small spots at apex of 

 clypeus, and a small spot on vertex above insertion of the 

 antennas, yellow. Scape beneath, anterior margin of pro- 

 notum, tegulae, a large ovate spot on mesopleurse, post- 

 scutellum, apical margin of first abdominal segment dorsally, 

 and of second abdominal segment both dorsally and ventrally, 

 anterior and intermediate tibiae, brick-red. Wings clear 

 hyaline, fuscous along the costa, second cubital cell sub- 

 triangular. Clypeus convex, subtriangular; thorax in front 

 rather wider than median segment, anterior margin of pro- 

 notura rounded, gradually widening towards the tegulre ; 

 median segment rounded posteriorly, concavo-truncate ; first 

 abdominal segment about as wide as median segment, 

 narrower than the second. Punctured : head and thorax 

 coarsely and regularly, first and second abdominal segments 

 less coarsely. 



Length 8 mm. 



Hub. Shillong, Assam {R. E. Turner), May 1903 ; 2 ? , 

 1 <?. 



Nearly allied to 0. sikhimensis, Bing., but can be readily 

 distinguished from that species by the absence of any 

 pubescence, the more uniform puncturation, the subtri- 

 angular second cubital cell, and smaller size. 



It has some resemblance to O. ty tides, Cam., from Sikhim, 

 but that species is not an Ancistrocerus; from 0. (Ancistro- 

 cerus) rhipheus, Cam., it differs in the pronotum, which has 

 the posterior margin more widely arched than in O. assam- 

 ensis, also the postscutellum in 0. rhipheus is black and the 

 wings are darker. 



Odynerus [Ancistrocerus) androcles, sp. n. 



Niger, punctatus ; clypeo partim, pronoti margine antico, tegulis, 

 postscutello, abdominis segmentorum 1, 2 margine postico flavis ; 

 alis hyalinis, apice fuscis. 



$ . Black ; base of clypeus, two minute spots at the apex, 



