246 CHARLES A. BLAKE. 



clothed with pale hairs; abdomen ovate, the segments fringed with glittering 

 white hairs ; entire insect sprinkled with pale pubescence. Length 3.5 mm. ; ex- 

 panse of wings 6.5 mm. 



Hab. — Texas. Belfrage. 



Spliserophtlialma Robinsonii Blake. 



Female. — Black ; head quadrate, double the width of thorax, posterior angles 

 produced into acute spines, densely punctured, vertex clothed with dense, bright, 

 deep golden pubescence; cheeks prominent, finely punctured, thinly clothed 

 with pale glittering hairs ; on the cheeks below the eyes are two small bilobed 

 tubercles ferruginous in front, just beneath which there is a stout tooth on each 

 side projecting behind, ferruginous at tip; below these are two others much 

 larger, projecting beneath, black, shining, finely punctured and clothed at base 

 with pale glittering hairs: mandibles stout, with a tooth about one 

 third of their length from the tips, a bright ferruginous dash before 

 the tooth ; antenna? black, the scape thinly clothed with pale glitter- 

 ing pubescence ; eyes prominent, round, polished ; thorax subquadrate, 

 slightly constricted, reticulate; anterior angles armed with a small 

 tooth ; disc clothed with bright golden pubescence, except a rounded 

 black patch on mesothorax and a longitudinal patch of the same color 

 on the metathorax, which is abruptly truncate ; legs black, clothed 

 with pale glittering hairs, the intermediate and posterior tibia? armed 

 exteriorly with a row of spines; tarsal joints fringed with ferruginous hairs, 

 calcaria pale, ferruginous; extremity of anterior tibiae and first joint of tarsi 

 deeply emarginate, with the spur lanceolate ; abdomen ovate, basal segment broad 

 at its apical margin, clothed with pale golden pubescence, second segment finely 

 punctured, clothed with dense black pubescence and bearing two large quadrant- 

 shaped fulvous patches, the third and following segments fringed with pale gol- 

 den pubescence ; under side of entire insect thinly clothed with pale hairs. 

 Length 18 mm. 



Hab. — Mexico (Prof. F. Sumichrast). Five specimens. 



In some specimens the basal joint of abdomen is entirely black. 



This species is nearly allied to eapitata Smith, bat is readily dis- 

 tinguished by the shape of the thorax and the greater width of the 

 head in proportion to the thorax, as well as the large tooth behind 

 the mandibles. 



Sphrerophthalma eapitata Smith. 



Female. — Black ; head quadrate, wider than the thorax, densely clothed with 

 pale golden pubescence, the cheeks furnished with a stout tooth ; the apical joints 

 of the flagellum ferruginous beneath; the mandibles ferruginous, their apex 

 black ; thorax short, broad and narrowed posteriorly, rounded in front, suddenly 

 contracted, on each side a short tooth before the contraction ; the metathorax 

 truncate, the disc covered with pale golden pubescence, having in front a large, 

 rounded, black patch ; the legs thinly covered with pale golden pubescence, the 

 calcaria and apical joints of the tarsi pale ferruginous, the intermediate and pos- 

 terior tibise armed exteriorly with a row of spines ; abdomen : the second seg- 

 ment having a large, transverse, yellow macula clothed with golden pubescence, 



