182 IHJLLETIN ir., IGNITED STATED NATIONAL MUSEUM. ' 



Lrj^s rii(,ln'r luii^', slciMlrr, pilose, the lihiii- rliivatc, tlieir spurs weak, 

 the tarsi mucli longer than the tibia*, slendtT, the chiws simple. 



('l«)sely allied to J'rosticdntlia, but readily distiiijiuished by the post- 

 scutelliim beinji" armed with 'A spines, and the tiist abdominal sv^- 

 ment bearinj;' a horn, as in CaUttcleut Westwood, in the trib*-! ticelionini. 

 The male is unknown. 



Peiitacaiitha canadeiiBis Ashni. 



(PI. VIM, FiK. 1,9-) 



lof. cit. i>. 51. 



9. Length,!*""". lUack; thorax and scutellnm coarsely sliagreened, 

 oi)aque; the liea<l smooth, shining, with some grooved lines baek of 

 the eyes and on the occiput, the vertex rather acute. Antenna* 12- 

 jointed, brown, the tirst funiclar joint twice as long as the pedicel, the 

 second one third shorter than the tirst, the third about as long as wide, 

 the fourth Avider than long; club G jointed. Thorax a little wider 

 than h)ug, without furrows, the postscutellum with .'5 erect spines, the 

 lateral posterior angles of the metathorax acutely spined. Legs, in- 

 <luding anterior coxa', ho'iey-yellow or brownish-yellow; middle of the 

 femora and tibia* and the posterior coxa*, dark brown or fuscous. Ab- 

 domen polished black, the third segment the longest ami widest, the 

 tirst with a horn at base, this as well as the second and the third, except- 

 ing on its disk, hmgitudinally striated. Wings subhyaline, the vena- 

 tion rufo piceous. 



Habitat. — Ottawa, Canada, an<l Kansas. 



Type, $ in Coll. Ashmead. 



The type was described from a single specim(*n receive«l from W. IL 

 Harrington, but I have since seen a specimen in Prof. l%»i>enoe's col- 

 lection, taken in lliley C(mnty, Kans. 



TRISSACANTHA Ashiii. 

 Ent. Am., Ill, p. 101 (1S87). 

 (Type, T. amrricatia Aslun.) 



Head transverse, the occiput almost strjiight, margined; ocelli 3, 

 close together in a triangle; eyes oval. 



Antenna* inserted on a cly])eal prom'uence, lli-jointed, in S very long, 

 filifornj, cylindrical, the scape extending to the ocelli, the i)e<licel very 

 small, annular, the third funiclar joint bent and angulated at the 

 middle. 



Maxillary palpi ,'5-jointed. 



Mandibles biilentate at tijis, the teeth equal. 



Thorax ovoid, the prothorax slightly visible from above, the mesono- 

 tum smooth, wider than long, with two delicate but distimt furrows, 

 scutellum semicircular, convex, jnetascutellum armed wicn A erect 

 8])ines, metathorax short, the ]»leura more or less covered m ith a gray- 

 ish woolly pnbes<'ence, the angles acute. ^ 



