418 REVISION OF THE ELATERIDJE 



One specimen from Pennsylvania, given me by Dr. Zimmermann; another from Ten- 

 nessee, sent by Dr. Schaum. 



2. E. amaenicornis, nigcr, opacus, vix pubescens, capite thoraceque'eonfertim minus subtiliter 

 punctatis, hoc latitudine non breviore, antrorsuui paulo angustato, lateribus late vix rotundatis, elytris 

 confluenter punctatis, striis sat profundis, versus suturam tendentibus; pedibus testaceis femoribus 

 infuscatis, antennis longe pectinatis, piceis articulis 2 et 3 testaceis, hoc sequente sesqui longiore. 

 Long. - 12 — 4G. 



Say, Trans. Am. Phil. Soc. 6, 189. 



Common in the Middle and Southern States. Some of the specimens have the sides of 

 the thorax more rounded than others; these are probably females: the branches of the 

 antennae do not, however, appear to be shorter than usual in such specimens: the elytra 

 in all of them arc tolerably strongly narrowed from the base to the tip, and the strisB on 

 the middle of the disc consequently run together, and vanish before reaching the apex. 

 The head is subject to abnormal impressions: in one specimen there are three occipital 

 grooves: in another, two faint ones just behind the antenna! sinus: in a third, there is a 

 broad frontal fovea, such as has been already mentioned in some species of Fornax. 



Galba Esch. Gi/cr. 

 The North American species of this genus is unknown to me: a single specimen was 

 obtained in Georgia by my father, who sent it to Count Dejcan. On account of the lobes 

 of the second, third, and fourth joints of the tarsi being shorter than in the Galbsc of the 

 eastern continent, Mr. Guerin proposed to form of this species a subgenus Dendrocharis. 

 His description and figures are found in the Annalcs de la Societe Entomologique <!e 

 France, Ser. 2d, vol. 1, 193; tab. 6, fig. 60 — 63. As the work is not generally available 

 to American students, I add a translation of Mr. Guerin's description: 



G. f lavicor n is, "Length 9 — 12 millimetres;" ("35 — -47 unc.) "Brown, smooth, convex, with 

 the sides parallel. Antenna"' strongly pectinate, a little thicker towards the apex; with the first two 

 joints brown, and the others orange yellow. Anterior tibire broad, compressed, ciliatc externally, 

 with stiff bristles ; tarsi capable of being folded along the tibiae, with second, third, and fourth joints 

 dilated beneath; the dilatations much less elongated than in Galba inamorata." 



MlCRORHAGUS Esch. 



A. Tarsi, articulo 4'" paulo dilataio sublobato. 

 [M. pygmaeus, fusco-niger, brevissime fusco-pubescens, frontc subcanaliculata, thorace latitu- 

 dine vix breviore, antrorsum modice angustato, lateribus late rotundatis, sat grosse punctato, angulis 

 posticis productis valde carinatis, linea marginali antice fureata, elytris a basi subangustatis, fortius 

 punctatis, vix striatis, pedibus obscure testaceis. Long. '18. 



V male specimen sent me by Dr. Schaum.* This species has the antennae subflabellate, 

 as in Eucnemis amajnicornis, but as the pectoral grooves are at the side of the presternum, 

 it cannot be associated with that species. It differs from all tin; following species in 

 having the marginal line of the thorax double before the middle, and the posterior angles 

 more strongly carinate: the pectoral grooves are well defined and broad: the ungues of 

 the tarsi are slender.] 



* This Km d^im ii .jH-rii's is de i bi d in connexion with our native ■ c e for the purpose oi exhibiting the specific 

 cl an - more clearly ; rei srences ire, omitted. 



