CEECEEIS. 127 



received in the middle. The following parts are pale yellow : the clypeus, the cheeks, 

 the antennal tubercle, a small spot behind the eyes, an interrupted line on the pro- 

 notum, the tegulse, the metanotum, two large marks on the median segment, a mark 

 on either side of the petiole, a line (narrowed in the middle) on segments 2-5, and a 

 spot on the side of the third and fourth ventral segments. The legs are fulvous-red, 

 except the coxae, the trochanters, and the base of the femora. 



\y 



33. Cerceris bicorimta. (Tab. VIII. figg. 8, head, 8 a, pygidium, 8 b, hypo- 

 pygium, ? .) 



Cerceris bicornuta, Guer. Icon, du Regn. Anim. p. 443; Cresson, Proc. Ent. Soc. Phil. v. p. 117 1 ; 

 Saussure, Reise d. Novara, Hymen, p. 100, t. 4. fig. 58 2 . 



Hab. Noeth America 2 , from New York to Louisiana 1 . — Mexico 2 . 

 The female only appears to be known of this species. 



34. Cerceris rostrata. 



Cerceris rostrata, Smith, Ann. & Mag. Nat. Hist. 4th ser. xii. p. 409 \ 

 Hab. Mexico 1 . 



Smith describes the female only of this species. In coloration, it comes very near 

 indeed to C. simulans, of which the male only is known ; but I think it very probable 

 that C. rostrata will prove to be its female. Smith x describes the clypeus as " elevated 

 and narrowed at half its length to a point." 



v 35. Cerceris bothriophora. 



Cerceris bothriophora, Schletterer, Zool. Jahrb. ii. p. 456 \ 

 Hab. Mexico 1 . 



\^ y 36. Cerceris chrysogastra. 



Cerceris chrysogastra, Schletterer, Zool. Jahrb. ii. p. 458 1 . 

 Hab. Mexico, Orizaba, Cuernavaca 1 . 



37. Cerceris trichiosoma. 



Clypeo ovato, subconvexo, margine apicali producto; oculoram margines fere paralleli; area eordiformis 

 rugosa; nigra, longe pilosa, facie, abdominis segmentis 1°, 3°-6 m marginibus apicalibus metanotoque 

 flaris ; alis fumato-byalinis, antice fuscis, costa stigmateque sordide fulvis. S ■ 



Long. 10 millim. 



Hab. Mexico, Ciudad in Durango 8100 feet (Forrer). 



Antennae with joints 3-7 fulvous beneath ; the third joint as long as the first, and 

 fully one quarter longer than the fourth. Eyes almost parallel. Ocelli almost in a 

 triangle ; the posterior pair separated from the eyes by a little more than the length 



