226 Journal New York Entomological Society. [Vol. xxvii. 



strongly bi-impressed, impressions triangular; clypeus with three shallow im- 

 pressions, the median one anterior; penultimate joint of the maxillary palpi 

 very short, quadrate, terminal joint, cylindrical, truncate; terminal joint of 

 the labial palpi broad, triangular, slightly shorter than the penultimate ; mentum 

 deeply emarginate with a large acute tooth ; ligula narrow, bisetose at apex, 

 paraglossae equal in length broadly rounded at apex ; antennae short, stout, not 

 reaching the base of the thorax, outer joints very little longer than wide, joints 

 six to eleven strongly compressed, four basal joints glabrous. Thorax one 

 fourth wider than long, five sixths as wide as the elytra, distinctly narrower 

 at base than at apex, apex emarginate, "base feebly bisinuate, squarely trun- 

 cate ; sides broadly rounded in front, broadly sinuate in front of the posterior 

 angles, all the angles strongly rounded, the anterior slightly obtuse, prominent 

 but not produced, the posterior nearly rectangular ; side margins broad, strongly 

 reflexed, wider in front and behind ; basal foveae not distinct ; transverse im- 

 pressions strong, the anterior rugose ; median line fine, strongly impressed, 

 abbreviated before and behind; a row of strong, coarse punctures along the 

 anterior margin, disk punctate as the head, punctures smaller and less distinct. 

 Elytra three times as long as the thorax, nearly three times as long as wide, 

 basal margin inferior ; sides parallel to apical fourth, thence strongly rounded 

 to the apices, which are separately rounded, sinuation distinct ; striae feeble, 

 intervals sub-carinate with single rows of very indistinct, widely spaced punc- 

 tures, those on the inner intervals almost indistinguishable. Abdomen punc- 

 tate-setose, punctuation elsewhere on the underside, sparse and indistinct. 

 Anterior femora with a strong tooth on the lower edge at basal two fifths ; 

 tibiae and tarsi pubescent; fourth tarsal joint slightly emarginate; claws slen- 

 der, simple; tibial spurs very short. Length, 14 mm.; width, 3 mm. 1 J 1 . 



Male: First two joints of the anterior tarsi moderately dilated and squamu- 

 lose beneath ; lateral margin of the elytra sharply expanded at apical fourth. 



San Felipe, Low. Cal. (Beyer). 



Of the many species in this genus described from Mexico and 

 South America, one only of those with dentate anterior femora has 

 rounded posterior thoracic angles. This species, P. morio Klug (Ann. 

 Soc. Ent. Belg., 11, 1867-1868, p. 52) is larger (16-17 mm.), with 

 differently proportioned head and thorax, the thorax with the an- 

 terior angles produced. P. parca Lee. (Tr. Am. Ent. Soc, XII, 1885, 

 p*. 2) from Arizona is of the same size and general form, but the 

 thorax is described as " as long as wide, with the dorsal line entire, 

 . . . front angles somewhat acute," elytra with interspaces " each with 

 a row of well-marked distant punctures." It is not stated that the 

 thoracic angles are rounded, which would be a strange omission in 

 describing the present species. (The description of P. unicolor 

 Fairm. from Chili could not be found.) 



