Horn.] «304: [June 20, 



short bristly recumbent hairs, with a very few erect hairs more sparsely 

 placed. Head concave, opaque. Thorax broader than long, on each 

 side a broad oblique groove smooth at bottom, broader and deeper 

 behind, disc of thorax (that is, the part between the grooves) truncate in 

 front, arcuate at base and nearly twice as wide as apex, surface feebly 

 shining, sparsely pubescent with recumbent bristle-like hairs ; margin of 

 thorax (part exterior to the grooves), divided behind the middle by a 

 deep fossa into two portions, the posterior globular, the anterior of 

 irregular pentagonal shape, the upper surface of which is flat, subopaque 

 and pubescent. Elytra more shining than the thorax, less pubescent, 

 with striae indicated by finely elevated lines, of which the subhumeral 

 and first dorsal are entire, the second dorsal three-fourths, and the third 

 nearly two-thirds the length of the elytra. Propygidium transversely 

 hexagonal, sparsely punctured, pygidmm oval, longer than wide, 

 minutely and very sparsely punctulate. Prosternum at tip deeply emar- 

 ginate, marginal line scarcely evident, surface opaque ; behind the lobe 

 constricted and with a transverse impression, tip of lobe emarginate. 

 Antennai with first joint triangular, coarsely punctured, club not annul- 

 ated, glabrous and truncate at tip. Anterior tibia? gradually broader at 

 basal third, then parallel to apex which is rounded, outer edge in its 

 entire length minutely denticulate, tarsal groove straight and shallow : 

 middle and hind tibise similar in form to the anterior, outer edge finely 

 spinulose. Length .12 inch ; 3 mm. Plate V., fig. 3. 



In its general aspect, and by the length of the legs this species resem- 

 bles the genus Terapus. 



One specimen, Fort Tejon, California. 



H. brunnipennis, Rand. Bost. Journ. II., p. 40 ; Mars. Mon., 1857> 

 p. 433, pi. 11, No. 28, fig. 2; Horn, Trans. Am. Ent. Soc, 1870, pi. 1. 

 fig. 8. 



Pale chestnut brown, shining. Front slightly concave, shining. 

 Thorax on each side with a gro»ve parallel with the margin, disc smooth, 

 shining, marginal space less shining and divided by a shallow transverse 

 fossa slightly behind the middle, anterior angles obliquely truncate. 

 Elytra with entire subhumeral stria, dorsal striae as in morsus, but less 

 distinctly defined by the elevated lines, and with erect fine hairs sparsely 

 placed along the line of the stria?. Propygidium and pygidium as in 

 morsus, but absolutely smooth and shining. Prosternum between the 

 coxa? smooth and shining with an elevated marginal line. Tip of pro- 

 sternal lobe emarginate. Legs similarly formed to morsus, but less 

 elongate. Length .06 inch ; 1.5 mm. 



This is our nearest species to the quadratus of Europe, from which it 

 abundantly differs by the transverse sulcus in the thickened margin. 



Occurs in the Middle States and Illinois. 



H. califomicus, Horn, Trans. Am. Ent. Soc, 1870, p. 137, pi. 1, 

 fig. 7. 



Head shining, pubescent. Thorax nearly twice as wide at base as 



