300 T. D. A. OOCKERELL AND J. E. C'ASAD. 



more or less brownish and finely pubescent, the piibescenee in certain lijfhts pro- 

 dncing a slightly silvery appearance. 



Hub. — Las Cruces, New Mexico, on cainpus of Agricultural Col- 

 lege, September, 1894 (Ckll., 2404). Type in coll. Am. Ent. Soc. 



Prosopis ruflbecltia' n. sp. %. — About 5 mm. long; black, with i)rim- 

 rose yellow face markings. Head and thorax closely punctured ; metathorax 

 more or less rounded, hardly truncate ; face, including clypeus, below level of in- 

 sertion of antennse primrose yellow, sutures conspicuously black : the yellow ex- 

 tends upward a little way between the antennfe, and on each side of the antennae 

 remote from the margin of the eye there extends upward a yellow process, wliich 

 broadens toward its end. tlie length of this process being not much more than 

 half the length of the scajie : scape broadened, truncate, black with an elongated 

 yellow mark on its outer side ; spot on tubercles and small spot on tegulse yellow- 

 ish. Femora black ; anterior tibia>, brownish yellow, dark behind ; middle tiljise 

 black, with the proximal end yellowish ; posterior tibiae black, with the proximal 

 two-fifths pale yellow ; tarsi brown, the four posterior ones yellow at their iirox- 

 imal ends. Wings dusky hyaline, nervuves and stigma piceous ; recurrent ner- 

 vures uniting with transverse cubitals. Abdomen finely punctured, very finely 

 pubescent ; the pubescence on the thorax is sjjarse, white on i)leuriE, tinged with 

 fulvous on dorsum. 



i/a6.— Santa Fe, New Mexico, July 19, 1894, on Rudheck'ui' la- 

 ci)r!(d(i (Ckll., 1563). Type in coll. Am. Ent. Soc. 



This seems to be a distinct species, tlKuigli very .<iinilar to /■*. an- 

 fettiiafa. 



I*rO»*0|»is bipos u. sp. 9- — About 6.5 mm. long; black, with yellow mark- 

 ings; venter and (bnsulum closely and strongly punctured: clypeus rather 

 sparsely punctured ; abdomen with fine shallow punctures, not so close as those 

 on dorsulum ; metathorax rugose, abruptly truncate, concave centrally, with the 

 upper medial portion strongly longitudinally wrinkled. Legs very lightly clothed 

 with silvery hairs. Abdomen shiny, second segment with a patch of white pu- 

 bescence on each side along the liind margin, ai)ical segment tufted with silvery 

 hairs; sides of face extending from mouth ui)ward about three-fourths length 

 of eye, collar, tubercles, spot on tegulse, and basal portions of tibiae and tarsi, 

 yellow; the yellow on the sides of the face gradually brimdens to the insertion 

 of the antennae, where it is notched, and then continues broad until it ends ab- 

 ruptly. The.se yellow markings resemble a pair of feet standing on tiptoe, hence 

 the specific name proposed ; the heel of each foot is again.st the socket of an an- 

 tenna; flagellum l)rownisb beneath; clypeus entirely black; mandibles black. 

 Wings hyaline, nervures and stigma piceous. 



Hab. — Las Cruces, New Mexico, on campus of Agricultural C'ol- 

 lege, vSeptember, 1894; two specimens (Ckll, 2411,2412). 



Mr. Fox remarks, concerning blpes, that it is related to varifrons 

 and affiiiis, but distinct ; diiiering by the much greater space between 

 the hind ocelli in comparison to that between them and the nearest 

 eve-margin. He adds, " the })unctuation of the dorsulum is not quite 

 so close as in the two mentioned, and in varifrons there is yellowish 

 on the pronotum." 



