548 Coleo}:>terological Notices^ VII. 



rotundatis, lateribus integris, basi bisiuuata; elytris ovatis, basi truncata, 

 medio transversim et longitudinaliter quadri-imx^ressa. Long. 1% mm. ; lat. 

 y^ mm. Hab. — Amer. Sept. 



It is not possible to give any useful suggestions concerning this 

 siDecies. The t3'pe is in tlie Berlin museum. 



Eumicrus lucanus Horn — Coleop. Baja Cal., 2, Proc. Cal. Acad. Sci., 

 2, vol. V, p. 235. — " Eeddisb brown, sparsely clothed with paler, semi-erect 

 hair. Antennae slender, longer than half the body, fifth joint as long as the 

 preceding two and slightly longer than the two following. Head shining, 

 Tery minutely sparsely punctate. Thorax longer than wide, apex narrower 

 than base, sides regularly arcuate, widest one-third from apex, disc convex, 

 sparsely and minutely punctulate, at base moderately quadrifoveolate. Elytra 

 not wider at base than the thorax, a slight depression within the humeri, 

 widest at middle, disc convex, surface indistinctly punctulate. Tarsi slender, 

 longer than half the tibiae. Length .06 inch ; 1.5 mm. 



' ' The male has the anterior tarsi slightly dilated. This species is evidently 

 allied to commilitonis, as described and figured by Dr. Sharp (Biol. Cent.- 

 Amer., II, pt. 1, p. 67 ; pi. 2, fig. 22), but is of more elongate form and with 

 more slender antennae. One specimen, San Jose del Cabo, with which I associate 

 two from Arizona in my cabinet." 



There are but few characters given in this description which are 

 not distinctive of the entire genus, and it is therefore impossible 

 to make any useful comparative statements. The two specimens 

 from Arizona, associated with lucanus'by the author, are probably 

 not identical, as the species of Eumicrus quite closely resemble 

 each other in general appearance and ai*e decidedly local in habitat 

 in our arid and broken southwestern country. It may be placed 

 just before motschulskii in the table of Eumicrus previously given. 



STAPHYLINID^. 

 TRICHOPHYA Mann. 

 Eumitocerus Csy. 

 As remarked by Rey, this genus is singularly isolated from its 

 nearest relatives, and constitutes a bond in several directions be- 

 tween the Tachyporini and Aleocharini, resembling the former in 

 mode of antennal insertion, and the latter in its less inclined 

 head, undefined epipleurte and other characters. Although so 

 similar to Habrocerus in antennal structure, the palpi, epipleu- 

 rse, point of antennal insertion and hind coxae differ profoundly, 

 and the two genera cannot be associated in the same subtribal 

 group. 



