HARPALINVE 71 



only two. It will be noted that the left mandible is more incurved 

 at tip than the right, this seeming to be a somewhat general char- 

 acter in the subfamily. 



Group I (caliginosus) . 

 Subgenus Megapangus nov. 



There is but a single extremely common and widely diffused 

 species as follows: 



Body large in size, elongate-oblong, moderately convex, shining, black 

 above and beneath, the legs black, with the anterior and middle 

 taisi piceo-rufous, the antennae and trophi testaceous; head rather 

 large, three-fifths as wide as the prothorax, with moderately large 

 and prominent eyes, the frontal foveae unusually large and notably 

 deep; prothorax two-thiids wider than long, the base broadly and 

 feebly sinuate, very imperfectly margined, much wider than the 

 apex, the basal angles right and very sharply marked, the sides 

 broadly rounded and converging anteriorly, the side margins 

 deplanate, gradually very broadly so basally and densely punctured, 

 the foveae very large, feebly impressed, vague and densely punctato- 

 rugose; medial parts of the base very sparsely punctulate; lateral 

 bead strong and abruptly elevated; median stria very fine; there 

 are traces of a feeble anterior transverse impression, which is finely, 

 suffusedly punctulate; elytra parallel, barely at all wider than the 

 prothorax, one-half longer than wide, very obtusely ogival at apex, 

 with obsolete and barely traceable sinus, the striae strong, impressed, 

 finely punctulate at the bottom, the scutellar very long, joining the 

 first, which therefore bifurcates at base, the intervals smooth, feebly 

 convex, the marginal gutter rather wide and deep, the marginal 

 interval opaque and with fine suffused punctures extending onto 

 the outer half of the eighth interval, the line of foveae indistinct 

 medially though scarcely interrupted; abdomen smooth and shining 

 medially, punctured densely toward the sides and with asperate 

 setigerous punctures medially at base; first four joints of the hind 

 tarsi decreasing evenly and rapidly in length, the first longer than 

 the fifth. Length (cf 9 ) 17.5-26.0 mm.; width 6.8-9.7 mm. Maine 

 to California and Texas caliginosus Fabr. 



LeConte placed this species in Pangus Zieg., apparently solely 

 because of the absence of the mentum tooth. It is a very isolated 

 species and merits subgeneric designation as proposed above. 

 There is but little variation in this probably long geologically 

 established species, except in size; one very large female from 

 Illinois, however, has longer elytra and a noticeably larger head 

 than the average. 



