AMERICAN COLEOPTERA. 51 



Coutribntioiis to the C01,EOPTEROIiOGY of the IJnited 

 States, Jio. 3. 



BY GEORGE H. HORN, M. D. 



The following descriptions of new species are made from specimens 

 in my cabinet, which have accumulated since the latest revisions of 

 the genera to which they belong. The publication of isolated species 

 is the most discouraging portion of scientific work as it often adds 

 nothing to science but a new name. It is however far better to put 

 a name before the scientific world backed by a description than to 

 have cabinet names without any authority whatever, this therefore 

 n)ust be the apology for the present paper. 



Two species belong to genera not before known in our fauna, 

 Anchonoderus and ('n/ptosfoma, represented heretofore by species 

 occurring only in South America. The species of the former genus 

 is a veritable member of our fauna, of this there can be no doubt, 

 of the other however there may be a little doubt as will be explained 

 further on. 



EliAPHRUSi Fab. 



E. pallipes n. sp. — Form rather slender, surface dark bronze as in rus- 

 carius. Head densely punctured, eyes large and prominent. Thorax narrower 

 than the head, slightly longer than wide, base narrower than apex, sides moder- 

 ately arcuate, posteriorly sinuate, hind angles rectangular; disc convex, with 

 apical impression moderately deep, median impression moderate and with a 

 short, smooth line more deeply impressed at its middle, within the hind angles 

 a broad impression ; surface densely punctured and with a vague impression 

 on each side of middle; beneath sparsely but not deeply punctured. Elytra 

 oboval truncate at base, widest behind the middle, sides slightly sinuate behind 

 the hunieri, disc densely and finely punctured with the usual three discal and 

 a marginal series of ocellate fovese and with polished, more elevated spaces 

 between the fovese of each series, those of the sutural row larger and the outer 

 two quite small. Body beneath bronzed, shining, sparsely punctured at the 

 sides. Legs testaceous with aeneous surface lustre, tips of tibiae and femora 

 darker. Length .24 inch; 6 mm. 



Male. — Anterior tarsi with three joints dilated. 



This species takes its place with ripariiis and ruscarius from which 

 it difi"ers in its generally longer form, narrower and less arcuate thorax 

 and its entirely pale legs. The sculpture of the under side of the 

 thorax is somewhat more dense and less deeply impressed, and the 

 intervals less shining than in ruscarius ; and more sparse than in 

 riparius and with intervals distinct. 



