1888.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. G37 



indicated posteriorly, obliterated anteriorly ; scutellum convex, rather 

 smooth dorsally, with large, deep fovea' at base; metathorax short, 

 with lateral carina, a slender, sharp spine in the middle on the superior 

 edge of the truncature, and the posterior lateral angles are prominent, 

 laminate, superiorly deeply impressed; legs rufous, all the coxa- black; 

 the extreme tips of posterior tibiae and tarsi more or less dusky. The 

 abdomen is uniformly rugose without basal carinas, and with a deep 

 vertical, longitudinal sulcus at apex; the raised rim surrounding the 

 venter is very prominent, abruptly broken opposite the insertion of the 

 ovipositor and subacute; the ovipositor is slightly exserted, as long as 

 the basal joint of hind tarsi. Wings dusky hyaline ; costa> aud stigma 

 black ; veins brown ; there are but two submarginal cells, and the 1st 

 submarginal is distinctly separated from the 1st discoidal. 



Habitat. — Texas. 



Described from a single specimen in the Belfrage collection. The 

 European type of this genus is Sigaljjhus obscurvs Nees. Mr. Marshall 

 does not include it in his tables of the Sigalphince, probably because it 

 is not found in England, but the genus seems to be founded upon good, 

 distinctive characters, aud I believe it should be recognized. 



UEOSIGALPHUS u. g. 



This genus is at once distinguished from Schizoprymniis by the sub- 

 median cell being much longer than the median; the antenna? 16- 

 joiuted ; abdomen oval, highly convex, and without a trace of a suture, 

 the apex without a distinct sulcus ; the ovipositor is distinctly exserted ; 

 in one species it is nearly twice the length of the insect; the apex of 

 the abdomen in the male is armed with two porrect spines, the genital 

 claspers being long, pendulous, and hairy ; metathorax, in both sexes, is 

 short, obliquely truncate behind, the superior edge being distinctly mar- 

 gined, the posterior lateral angles not at all prominent, while the pos- 

 terior femora are quite robust, or somewhat swollen. (Type : Urosigal- 

 phus armatus.) 



Urosigalphus armatus n. 'sp. 



Female.— Length, Q°f"™ ; ovipositor, 10-'". Black, subopaque, coarsely 

 punctuate and rugose, covered with a sparse, white pubescence, denser 

 on face aud abdomen. 



Head transverse, punctulate, some of the punctures confluent on 

 vertex; the stcmmaticum is subpyramidal, three-augulated, the ocelli 

 placed at the base of each face ; antenna? 16-joiuted, black, reaching to 

 the base of the abdomen, the four or five basal joints of nagellum being 

 about five times as long as wide ; thorax punctate, the parapsulal grooves 

 obliterated and their place filled with coarse, dilated, reticulated punct- 

 ures : scutellum rounded off posteriorly and reticulated with coarse 

 punctures ; metathorax short, roughened with coarse, reticulated punct 

 ures ; obliquely truncate behind, the superior edge of the truncal. ue 



