AMERICAN COLEOPTERA. 215 



this combined with the black polished glabrous surface, evenly con- 

 vex thorax with front margin not thickened, strong but simple 

 punctuation of the head, pronotum and metasternum, and fine sub- 

 confused punctuation of the elytra, make this species at once recog- 

 nizable and mark it as widely distinct from all others of the genus. 

 I have with great pleasure dedicated this interesting addition to our 

 fauna to Mr. Schwarz. 



2. P. yuccie n. sp. — Blackish brown, opaque, nearly as robust as schwarsi 

 and distinctly stouter than auy of the following species. Head coarsely densely 

 punctate, front about one-third wider than the vertical diameter of the eye. Pro- 

 notum coarsely punctate, the punctures densely placed, except at the posterior 

 portion of the disk where they are not in mutual contact; front margin feebly 

 thickened but scarcely reflexed ; oblique discal impressions nearly wanting. 

 Strial punctures of elytra fine and decreasing only slightly in size toward the 

 apex. Interspaces with a single row of punctures that are as a rule a little more 

 widely spaced than those of the strife and but very little smaller ; each puncture 

 hears a short pale hair. Metasternum punctured throughout, more finely at 

 middle; ventral surface with larger and smaller punctures rather closely placed. 

 Second ventral segment much longer than the metasternum at sides, the latter 

 length being scarcely greater than the combined length of the third and fourth 

 ventrals. Length 1.35-1.9 mm. 



Florida (Key West, Punta Gorda and Jupiter). Collections of 

 Horn and Hubbard and Schwarz. 



I am unable to distinguish the sexes in the material at hand. 

 Yucca' is nearly as robust as sehwarzi and in the form and sculpture 

 of the thorax, and the punctuation of the lower surface resembles it 

 more closely than do any of the following species. Its habits are 

 indicated by the specific name. 



3. P. serial 11 ill n. sp. — Moderately elongate, brown, distinctly though 

 sparsely pubescent. Head and prothorax densely punctate throughout, the pro- 

 notal disk a little prominent, with well denned oblique impressions each side; 

 front margin thickened and reflexed. Punctures of elytral strife strong and 

 close set, diminishing in size toward the apex, but well denned throughout. 

 Discal striae slightly, two lateral strife more strongly impressed. Interspaces 

 confusedly finely punctulate. Punctuation beneath finer than in the two pre- 

 ceding species, especially on the central portion of the metasternum. Eyes evi- 

 dently larger in the males, the width of the front being in this sex evidently 

 less than the vertical diameter of the eye, while in the female it is a little greater 

 than the diameter of the eye. This species as a rule is decidedly larger and a 

 little stouter than bistriatum, but certain specimens show a variation in the direc- 

 tion of the latter species in the smaller size and less coarsely punctured elytral 

 striae. In all, however, so far as the material at hand allows me to judge, the 

 eyes are relatively larger and the frout narrower than in the corresponding sex 

 of bistriatum; the color is here always brown, in typical bistriatum black. Length 

 1.9-2.3 mm. 



TEANS. AM. ENT. SOC. XXXI. JUNE, 1905. 



