CERCEKIS. 129 



39. Cerceris scapularis. 



Cerceris scapularis, Schletterer, Zool. Jahrb. ii. p. 457 \ 

 Hab. Mexico, Orizaba 1 . 



40. Cerceris thermophila. 



Cerceris thermophila, Schle.tterer, Zool. Jahrb. ii. p. 463 \ 

 Hab. Mexico 1 . 



41. Cerceris graphica. 



Cerceris graphica, Smith, Ann. & Mag, Nat. Hist. 4th ser. xii. p. 410 ( ? ) \ 

 Hab. Mexico K 



Smith describes the female, but nothing is said about the form of the clypeus. The 

 " abdomen ferruginous, with yellow band " and the " legs ferruginous, with yellow 

 tarsi " appear to separate it from any of the species known to me. 



/ 42. Cerceris sonorensis. (Tab. vill. fig. 10, e organ.) -^ £**-*■*-<■ «***— 



Nigra, facie, linea pronoti, metanoto, pedibus lineisque abdominis segmentis, flavis ; antennis runs et flavis ; 



alis hyalinis, antice fulvo-fumatis, stigmate fulvo. c? • 

 Long. 12 millim. 



Hab. Mexico, Northern Sonora (Morrison). 



Head large, wider than the thorax, closely and rather strongly punctured, and 

 covered with long pale hair. The cheeks, clypeus, mandibles (except at the apex), 

 the space between the antennae, and a short distance up on either side of them, 

 yellow; there is a small irregular mark at the top of the head behind, and nearly 

 touching the eyes. The thorax is shining and punctured like the head, and covered 

 with long pale hair ; there is a large mark (broadest behind) at the apex of the anterior 

 coxae, and a small mark in front of the four hinder coxee. The heart-shaped area of 

 the median segment is defined, but does not differ much in punctuation from the rest 

 of the segment, and is furrowed down the middle. The abdomen is much more feebly 

 punctured than the head, the depressions aciculate, and it is covered with pale hair. 

 The yellow band (rufo-fulvous in the specimen, probably through discoloration by 

 cyanide of potassium) on the second segment is wider and larger than that on the 

 other segments, and has a broad incision in the middle in front. The two basal ventral 

 segments are for the greater part yellow. The yellow of the legs is intermixed with 

 fulvous ; the second to the fourth tarsal joints are marked with fuscous. The cloud in 

 the wings commences from the apex of the stigma and extends to the cubital cellules. 

 The joints 7-11 of the antenna? are marked with black above ; the third joint is about 

 as long as the fourth and fifth united; the last joint is curved. The third transverse 

 cubital cellule is received at the apex of the radial cellule. 



biol. CENTK.-AMEE., Hymenopt., Vol. II., February 1891. ss 



