264 AMERICAN COLEOPTERA. 



ers very long, posterior shorter; anterior femora elongate, with a stouter spine at 

 about middle beneath, and three narrower spines between this and the base; 

 front tibise straight, beneath at middle sliglitly wider and armed with a spine, 

 intermediate femora slightly thickened, with one tubercle beneath and around 

 this four fine spines, middle tibise hardly arcuate and of nearly equal width 

 throughout, beneath, slightly below middle, an oblique spine; posterior femora 

 and tibise elongate and without spines or tubercles ; tarsi with one claw. Length 

 2 ram. 



Texas. One male in collection, Dietz. 



The long intermediate trochanters, the single claw and the head 

 flat beneath brings this species in RafFray's tribe Holozodini,* 

 though the anterior and intermediate trochanters are as long or 

 even slightly longer than in our species of Pselaphus and the other 

 genera placed in the tribe Pselaphini. Of the two genera constitu- 

 ting the tribe Holozodini, the above described species agrees best 

 with the Central American genus Caccoplectus, though differing in 

 several ways from the descriptions given by Sharp and Raffray. 



The head in spinipes seems to be of nearly the same structure as 

 in eelatus — short, with the mouth inferior, not prominent, the thorax 

 is also similar and the elytra have the geminate sutural and discal 

 strise as in eelatus. Judging from the figure the eyes in eelatus are 

 much further removed from the base than in spinipes, in which they 

 are close to the base, and the antennse differ greatly from those of 

 the latter species. A new genus will eventually be necessary for 

 this species, but for the present it is left in Caccoplectus till more 

 material is available. 



Fustiger knausii n. sp.— Jl/aZe.— Form, size and color of F. fuchsii Brend., 

 from which it differs by having the head in front short, convex and not longitu- 

 dinally impressed, the second antennal joints slightly longer, the eyes smaller, 

 the intermediate trochanters unarmed, the intermediate tibiae shorter and stouter 

 and with a short spine-like tubercle at apical third. The antennal fossse extend 

 more to the front, which causes the latter to be strongly contracted and much 

 narrower than in fuchsii. 



Claudcroft, New Mexico ; collected by Mr. Warren Knaus, to 

 whom I take pleasure in dedicating this species. 



F. fuchsii Brend. has the head in front obliquely prolonged and 

 with a longitudinal median groove, which is smooth and sliining at 

 the bottom, the intermediate trochanters are armed with a large 

 curved spine, and the intermediate tibiae have at about middle a 

 straight, slightly smaller spine than the one on the trochanters. 

 * Ann. Soc. Ent. Fr., vol. Ixxii, pp. 488 and 491. 



