204 JOURNAL, BOMBA Y NA TURAL HISTORY SOCIETY, Vol. X. 



This species closely resembles some of the black and gray species of 

 Pompilus and Pseudagenia, It is, however, a true Salius in structare, 

 having the intermediate and posterior tibise strongly serrated and spined. 

 It is not uncommon in bamboo jungle in August and September, and 

 I once watched a female fighting with a large hairy spider which she 

 finally paralyzed and carried off, but she flew so swiftly that I lost 

 sight of her in the thick undergrowth and so failed to find the nest. 

 Hemipepsis Group. 



11.— SALTUS MARTINII, n. sp., PL I, Fig. 10, $ ; 11, $, 



Habitat : Deli, North-East Sumatra, 



Female : Length 30 m.m., expanse 58 m.m, 



Male : Length 21 m.m., expanse 44 m.m. 



Description. — 9. Head, thorax and abdomen jefc-black, smooth and 

 shining, a fine silky silvery -white pile on the posterior portion of the 

 thorax above ; wing fusco-hyaline, legs reddish-yellow. Head broad, 

 eyes distinctly converging above, below reaching well np to the base 

 of the mandibles ; mandibles narrow, shining black with a reddish testa- 

 ceous tinge at the tips, clypeus broad, convex, slightly porrect, finely 

 pitted and clothed with stiff decumbent hairs ; its anterior margin 

 arched upwards' and stained with testaceous-red ; a streak on the inside 

 of the eyes and another short streak behind starting from near the 

 vertex reddish-yellow, front of the face, vertex, and back of the head 

 black with scattered black hairs ; antennse dusky yellow-fuscous at apex ; 

 the scape and flagellum below brighter yellow, the ocelli small, in an 

 equilateral triangle on the vertex, a shallow furrow from the anterior 

 ocellus down the forehead to between the base of the antenna. Thorax 

 Black, very closely and finely pitted ; the pronotum short, widely arched 

 posteriorly, the mesonotum convex, scutellum and postscutellum 

 prominent, the metanotum sharply declivous posteriorly, its apex 

 funnel-shaped with recurved edges, the mesothorax, scutellum, post- 

 scutellum and metathorax above clothed with a beautiful fine 

 silvery pile, which in the type specimen is much abraded, 

 but from the traces left evidently povered the whole of the 

 after part of the thorax ; the metathorax transversely striate above, 

 the side tubercles and stigmata well marked ; wings dark fuscous with 

 a purplish effulgence, tegulse and nervures dark brown, a large promi- 

 jaent wing spot in the 1st discoidal cell, opaque anteriorly, clear hyaline 



