HISTERID.E 205 



men from Vancouver, at any rate supposed by him to be the same. 

 The present species, according to the original description of sub- 

 opaca (New pp. Col., 1863, p. 60), differs in the elytral striation, 

 it being said of subopaca "elytris striis utrinque 6 marginalique 

 integris." The marginal stria, said to be entire, is the subhumeral 

 of Horn, who states in his description of subopaca (Mon. 1873, p. 

 279) that it is abbreviated and continued thence to the apex by a 

 row of punctures. The internal marginal of LeConte is the humeral 

 of Horn ; it is said to be obsolete in subopaca by the former, and very 

 short by the latter, author.* The punctures in millepora are very 

 fine, being, on the pronotum, exactly as in perpunctata, but on the 

 elytra of the latter they are much feebler. 



Psiloscelis blanchardi n. sp. Oblong-oval, convex, distinctly shining, 

 black, more or less piceous beneath, the legs often rufescent; head finely 

 but deeply, very closely and uniformly punctate, the epistoma not more 

 than feebly concave medially, the ambient line wanting at the sides, 

 represented along the epistomal base by a transverse and posteriorly very 

 obtusely angulate line; antennal club ferruginous, broadly rounded; 

 prothorax three-fifths wider than long, widest at base, the sides thence 

 feebly converging and evenly but very feebly arcuate, more rounding 

 apically, the angles well denned, not rounded; sinus deep, its submarginal 

 line very broadly rounding at the sides to form the inner lateral stria, 

 this attaining the base and only moderately strong, the narrow surface 

 between it and the fine outer stria minutely and very closely punctate; 

 general surface finely, rather sparsely punctate, gradually more closely, 

 much less finely and with intermingled minute punctures toward the 

 sides; elytra before the middle somewhat wider than the prothorax, a 

 little shorter than wide, the sides distinctly and evenly arcuate, somewhat 

 more converging posteriorly, the apex as in the preceding; striae similarly 

 in the form of broad shallow grooves, the six discal as in harrisi, the 

 humeral almost entire, being only slightly disintegrated apically, the 

 subhumeral scarcely at all more impressed and not extending quite to 

 the middle; punctures fine but deep and widely separated, with minute 

 punctures intermingled; pygidia with equal and very close, rather large 

 rounded punctures, very even throughout; under surface shining, the 

 punctures generally well separated, the margin of the prosternal lobe 

 interrupted medially; mesosternal sinus deep; anterior tibiae tridentate, 

 the apical tooth broad and bifid. Length 4.2-4.5 mm.; width 2.7-3.0 

 mm. Massachusetts (Tyngsboro Fred. Blanchard, and Framingham 

 Frost). Two examples. 



This species has been labeled Hister repletus Lee., in my collection 



* I shall continue the nomenclature of Horn in the genus Hister, calling the stria 

 on the outer side of the humeral swelling the subhumeral and that on the inner side 

 the humeral; the short oblique stria sometimes extending outwardly from near the 

 base of the first or outermost discal stria, is called the oblique humeral. 



