XoV., '09] ENTOMOLOGICAL XKWS 381 



Mr. E. S. Tucker sent this form to me asking if I thought 

 il was a new species. After comparing it carefully with albopilo- 

 snin I think it is only a sub-species separated by the above 

 characters. Prof. T. D. A. Cockerell found the bee-fauna of 

 Piano included both humid and arid region species, (Can. Ent. 

 p. 129, April, 1909). May not f^lcuiocnsc be the arid region 

 form of albopilosHin? 



Trypoxylon spinosnm Cameron. 



I have seen two males and two females of this species from 

 Lee County, Texas, which were collected by G. Birkmann. 

 The sides of the first abdominal segment in the male are 

 reddish, the anterior tarsi are also reddish, and the pubescence 

 is slightly golden. 



The female is much like the male. It is close to rufozonalc 

 Fox, but differs in having the eyes farther apart at the vertex 

 than at the clypeus, the pubescence has a golden tinge, and the 

 tarsi and bases of the posterior tibiae are fulvous. 



Trypoxylon aureolum n. sp 



Female. Length about 16 mm. Anterior margin of the clypeus with 

 a deep notch in the middle ; the clypeus is as long as wide. There is 

 a very faint carina between the antennae above ; front with close 

 punctures, the ocellar area with smaller, closer punctures and appearing 

 granular. Behind each lateral ocellus is a transverse ridge, these 

 ridges do not meet in the middle. The third antennal joint is about 

 as long as joints four and five. Pronotum is rounded, without a 

 transverse sulcus, shining, and very sparsely punctured. The dorsulum 

 and scutellum have distinct, separated punctures, those of the scutellum 

 are somewhat closer than those of the dorsulum ; the scutellum is 

 slightly impressed ; the metapleurae are shining, and more sparsely 

 punctured than the dorsulum. The metathorax with a faintly denned 

 enclosed area, the apex of which is transversely striated: the pos- 

 terior face with a distinct median sulcus; the entire metathorax is 

 rather closely granular or is so closely punctured as to appear gran- 

 ular. The legs are without spines; the posterior trochanters have a small 

 hump beneath. The first abdominal segment is not quite twice as long 

 as the second and is about the shape of rufozonale (Tr. Am. Ent. 

 Soc. XVIII, pi. III. fig. 13) ; the second segment is not raised at the 

 apex and is not twice as long as wide at the apex. Color black ; 

 tegulae brownish; all the tibiae and tarsi, and the first two abdominal 

 segments reddish or brownish. The usual places with dense golden 



