NORTH AMERICAN COLEOPTERA. 3 



tra a little wider than the thorax, strise sharply impressed, not punctured, inter- 

 spaces flat, sparsely punctured, 3d stria with two dorsal punctures. Length S mm. 

 Arizona, one specimen. Very similar in appearance to Plochionus 

 pallens, but quite distinct by the punctured upper surface. Seems to 

 belong to Chaudoir's genus Lionedya. 



AMPHICHKOUM Kraatz. 



A. maculatHin n. sp. — Beneath piceous, above testaceous.. Head piceous, 

 coarsely punctate. Antennae piceous, three basal joints testaceous. Thorax oval, 

 slightly transverse, apex and base nearlj'- equal, sides arcuate, margin slightly re- 

 flexed, surface rather coarsely punctate, sparsely pubescent. Elytra testaceous, an 

 oval, oblique piceous spot on each, coarsely punctured, sparsely pubescent. Ab- 

 domen piceous, more closely and much more finely punctured than the elytra. 

 Length 6 mm. 



Mule. — Anterior femora stout, strongly angulate beneath and with a small tooth, 

 the tibise arcuate and thickened at tip; anterior tarsi dilated the first joint more 

 broadly and longer than the next three joints together. Middle femora more 

 slender, the tibite arcuate, broader toward the tip and with an emargination on 

 tlie inner side near the tip which is bordered with short fimbriae. Posterior femora 

 more slender, the tibiae straight with a slight emargination on the inner side near 

 the tip. Prosternum on eacli side with a group of coarse punctures bearing short 

 erect spines. 



Female. — The femora are more slender than in the male and the anterior is not 

 angulate. The tibiae are straight and slender, not emarginate nor thickened. The 

 anterior tarsi are slightly dilated, the first joint not as long as the next three 

 together. Prosternum not spinous. 



Occurs in the high Sierras of California, Big Trees, Calaveras Co. 

 (Carl Fehr.) and western Nevada (Morrison). 



Since the publication of the figure* of the male of this species (Tr. 

 Am. Ent. Soc. x, pi. ix) Dr. Horn has recognized the female in his cab- 

 inet. The sexual characters mark this insect as one of the most peculiar 

 of the aeaus in our fauna. 



* As stated above (loc. cit. p. 285) the figure of the above species was prepared by 

 me at Dr. LeConte's request and appears as Slachygraphis maculata. On the ar- 

 rival of my figure JMr. Fauvel recognized the species as the one erroneously referred 

 to Amphwkroum canal icidatum Er. (Notices Entomologiques, pt. V,p. 76), concern- 

 ing which Mr. Fauvel writes as follows: " Stacliygraphis maculata is the insect 

 described by error in my Stapliylinidae of N. A. as Ampkichroum canaliculatum. 

 At the time of my description I had merely an individual in fragments, but since 

 1 have others of both sexes from Nevada. It is a new species extremely near 

 hirtelluiii but larger with the more robust head more strongly punctured, more 

 unequal; the thorax larger and longer, a little narrower in front; the female has 

 but a few finer hairs behind the- eyes. In hirtellum the anterior tibise are sinuate 

 to the middle, then swollen in mass toward the summit, squarely truncate at tip. 

 Apart from these differences maculatum resembles hirtellum and might be consid- 

 ered a race from the Alps of California." — (Geo. H. Horn.) 



