XXXI, '2OJ ENTOMOLOGICAL NEWS 1 97 



tance between the middle coxae. Fore tibiae denticulate within, not 

 sinuate, slightly bent at apex, the femora only moderately enlarged. 

 Length 4.8 mm. 



One specimen, Chisos Mountains, Texas, July 22. Accord- 

 ing to the latest synoptic table of Pandeleteius, defectus would 

 be placed near rotundicollis Fall, on account of the six-jointed 

 funicle. Otherwise the two species have nothing in common. 

 In rotundicollis the anterior femora are much more strongly 

 dilated, the corresponding tibiae longer and more slender, 

 the head more concave, and the outer funicular joints trans- 

 verse and moniliform. In habitus the two species are alto- 

 gether dissimilar. It would seem a better plan to subdivide 

 the genus primarily on the form of the nasal plate, thus estab- 

 lishing a number of groups and giving a more natural arrange- 

 ment of the species. By this method such aberrant forms 

 as submetalliciis would be isolated and the species described 

 above would be associated with hilaris, which it closely re- 

 sembles. 



Isodrusus debilis Sharp. 



This species was described from San Geronimo, Guate- 

 mala. I have eight specimens of an Isodrusus from the Davis 

 Mountains, Texas, July 9, which agree in every particular 

 with the description of debilis in the "Biologia." Debilis 

 has the appearance of a small Pandeleteius with the body 

 above and the legs sparsely clothed throughout with short 

 recurved setae. The legs are short, the fore tibiae normal 

 and not denticulate within, and the claws are connate at 

 base. 



Otidocephalus ruficornis Casey. 



Three specimens apparently belonging here were taken in 

 the Chisos Mountains, Brewster County, Texas, July 18. 

 They fit Col. Casey's description completely as to size, vesti- 

 ture and sculpture but are differently colored. The body is 

 black; the head, beak, antennae and prothorax dark rutous; 

 the legs very dark ferruginous with the femora, especially 

 the first two pairs, paler on basal two-thirds. I can find no 

 tangible difference between this series and authentic spivi- 



