194 [January 



paler at base, clothed, especially the posterior pair, with dense fulvo- 

 ochraceous pubescence. Abdomen somewhat narrower than the thorax, 

 fulvous, shining ; the basal, apical and ventral segments clothed with 

 ochraceous pubescence. Length 5J lines; expanse of wings 10 lines. 

 Collection. — Dr. J. G-undlach. One specimen. 



Centrist cornuta, n. sp. 



Black; thorax, except disk of mesothorax, base and apex of abdomen, and 

 posterior tibiae, clothed with ochraceous pubescence; disk of mesothorax, and 

 rest of legs, clothed with black pubescence; head large, quadrate; clypeus 

 short, transverse, with a stout incurved tooth on the middle; labrum forming a 

 very large, flattened plate, passing beneath the mandibles, which are long and 

 cleft at tips; most of clypeus, and a stripe down each side of labrum, whitish : 

 abdomen narrow; wings subhyaline. 



Female. — Head large, quadrate, black, polished; cheeks and occiput 

 broad; ocelli arranged in a slight curve in a subtriangular depression 

 on the vertex, which is prominent in front of ocelli; eyes ovate, moderate ; 

 face very short, clothed with short ochraceous pubescence, mixed with 

 black on the posterior middle; clypeus short, very transverse, emargi- 

 nate on each side, with a large, very prominent, incurved, subacute 

 tooth on the middle, pale yellowish-white, the anterior and posterior 

 margins and the tooth except its lateral base, black ; labrum forming a 

 very large, flattened plate, passing beneath the mandibles, black, po- 

 lished, with a broad, pale yellowish-white stripe on each side, converg- 

 ing towards the tip, which is truncate, somewhat reflexed and armed 

 above with a long, slender, porrect, subacute spine ; the cheeks much 

 produced beneath the base of the mandibles, forming an obtuse process, 

 against which the sides of the labrum seem to rest; mandibles very 

 long, narrow and cleft at tip, shining black, fringed beneath with a row 

 of scattered, black pubescence ; antennae black, the flagellum beneath 

 piceous. Thorax robust, clothed with short, dense, pale ochraceous 

 pubescence, sparse on the pleura beneath ; mesothorax with a large 

 space of dense black pubescence covering nearly its entire surface; sides 

 of the scutellum with a tuft of long blackish pubescence; metathorax 

 naked, smooth and shining on the middle, and clothed on each side 

 with long, dense, ochraceous pubescence ; tegulae piceous, highly po- 

 lished. Wings faintly tinged with pale fuscous, with a slight metallic 

 gloss ; nervures fuscous. Legs piceous-black, clothed with black pu- 

 bescence, mixed with pale on the femora beneath ; posterior tibiae and 

 basal joint of their tarsi flattened and dilated, densely clothed on the 

 outside with short pubescence, that on the tibiae ochraceous, and that 

 on the tarsi black ; spurs of the posterior tibiae long and acute, the 



