Indian Aculeate Ilymenoptera. 515 



the eighth to the eleventh joints of the flagelliira of the antennse 

 remarkably produced on the inside ; median segment mode- 

 rately long, conveX; its sides rounded, with a central fovea. 

 Black ; the fourth and following joints of the flagelluni of 

 the antenna, and the apical joints of the anterior tarsi, more 

 or less red ; the front covered with somewhat thick silvery 

 pubescence ; thorax pruinose, with sparse greyish pubescence ; 

 abdomen with short and rather sparse silvery pile, pygidiuni 

 with silvery hairs; wings flavo-hyaliue, nervures and tegulae 

 reddish testaceous. 



Long. 11-13 millim. 



Hab. Mt. Abu ; fairly common. 



Nearest to T. vicina, but the remarkably produced joints 

 of the antennse are sutficient to distinguish it from any other 

 species. 



Tachytes proxima, sp. n. 



? (S . Thickly covered with golden pile, which to a con- 

 siderable extent hides the sculpturing, but the head and 

 thorax appear to be closely punctured under it ; clypeus 

 rounded anteriorly, front somewhat concave, with an im- 

 pressed median line reaching the vertex ; scutellura and 

 median segment with a median longitudinal impressed line, 

 which on the latter terminates in a hollow or depression, this 

 segment is short, very convex, the sides rounded. Black or 

 reddish black ; the femora, tibige, and tarsi red ; the pile on 

 the clypeus and front is longer and of a brighter golden than 

 elsewhere ; head and thorax with some sparse greyish pu- 

 bescence in addition to the pile ; on the abdomen the pile 

 has a tessellated appearance ; apical two abdominal segments 

 with a few stiff fuscous hairs ; pygidiura with bright golden 

 hairs ; abdomen below shining, second segment minutely and 

 closely punctured, remaining segments sparsely punctured, 

 all the ventral segments except the first with a few stiff 

 fuscous hairs at apex ; wings flavo-hyaline, sometimes very 

 slightly infuscated at apex, nervures flavo-testaceous, tegulse 

 red. 



Long. 13-16 millim. 



Hah. Deesa ; common. 



Nearest to T. taprohancB. 



Tachysphex nudus, sp. n. 



? c^ . Head moderately closely punctured ; mesonotum 

 and scutellum sparsely punctured and shining, median seg- 

 ment above rugose ; abdomen very finely and closely punc- 

 tured, shining ; clypeus rounded anteriorly, the front near 



36* 



