368 BULLETIN UNITED STATES GEOLOGICAL SURVEY. [tol.Y. 



ioints of antennae yellow beneath, anterior tibise and basal joint of their 

 tarsi yellow anteriorly; incisures of thorax black; a band on the first 

 segment of the abdomen, even anteriorly and uneven posteriorly, bands 

 on segments two to four, deeply excavated on each side anteriorly, and 

 a large median spot on segments five and six, yellow. 



Ceropales brevicornis n. sp., (? . 



Antennse very short, reaching to the scutellum only. Costal nervure 

 and stigma pale testaceous. 



This may prove to be the male of C. longipes Smith, but it differs from 

 that species in having no yellow spot above the anterior coxse, in the 

 mandibles being black, and in the white color of the abdominal bands, 

 which are not interrupted on the second and following segments. From 

 C. fasciata Say it differs besides in the ornamentation of the legs and 

 in having no yellow line on the disk of the mesothorax. 



From G.fulvipes Cress, (of which the ? only is described) hrevicornis 

 differs as follows : length .30 in., labrum, face below and between anten- 

 nae, two basal joints of the antennae beneath, anterior tibiae in front and 

 spots at the base and near the tip of intermediate tibiae, and the basal 

 joint of the four anterior tarsi, yellow ; no fulvous color on the posterior 

 coxae ; markings on the abdomen white, the first segment with large 

 lateral spots, the second to the fifth segments with broad apical bands, 

 which are dilated laterally and sinuate on each side anteriorly. 



In the description of fulvipes there is, I think, an error in locating the 

 abdominal bands upon the " anterior" margins of the segments, for in 

 all other species of the genus the bands are subapical. If this be the 

 case hi fulvipes, hrevicornis is, in all probability, its male. 



Tachytes TEX anus Cress., <?. 



The antennae are not crenulated, as is usual in $ Tachytes, but are 

 grooved internally, and the joints from the third to the ninth are angu- 

 lated at the tip posteriorly. The eyes are somewhat sinuous on the 

 inner border. The metathorax is subtruncate. The second submarginal 

 cell is less narrowed towards the marginal than usual, the nervure be- 

 tween the second and third submarginal cells being nearly straight ; 

 the radial cell has a faint appendiculation. The area on the seventh 

 dorsal segment is distinctly limited by lateral carinae, and is broadly 

 truncated at the apex. The eighth ventral segment is produced into 

 two sharp spines, which project beyond the angles of the truncation of 

 the dorsal area. 



Larra divisa n. sp., 9. 



Length ll"""^ to 14'"^'" ; expanse five-thirds of the length. Black ; the 

 wings black, violaceous ; the abdomen red, the basal segment, excepting 

 the apical margin, black ; mandibles near the base, border of the tegu- 

 lae, anterior tarsi and tips of the four j^osterior tarsi piceous. Head 

 much broader than the thorax, compressed, the front not prominent; 



