214 H. C. FALL. 



Second ventral segment but little longer than tbe third and fourth united, and 

 slightly shorter than the metasternum at sides. 

 Black, shining, subglabrous; form relatively stout, prothorax evenly convex 



without oblique discal impressions 1. scliwarzi. 



Second ventral segment not much shorter than the three following united, and 

 more or less evidently longer than the metasternum at sides. 

 Elytra] interspaces with a single series of smaller but distinct punctures; pro- 

 notum more coarsely, less densely punctate ; second ventral segment 



conspicuously longer than the metasternum at sides 2. yuccse. 



Elytral interspaces usually with fine confused punctuation, which is often 

 indistinct; pronotal punctuation denser and finer; second ventral 

 segment less obviously longer than the metasternum at sides. 

 Punctures of elytral series strong, close set, and distinct quite to the apex, 

 though becoming finer posteriorly as usual ; the two lateral striae less 

 conspicuously deeper than the discal. 

 Form a little stouter; stem of metasternal lobe relatively wider (Atlantic 



States) 3. seriatum. 



Form narrower, stem of metasternal lobe narrower, about half as wide as 



the lateral portion of the lobe 4. califoriiicuin. 



Punctures of elytral series finer, less close set, and becoming nearly obsolete 

 apically ; the two lateral striae conspicuously deeper. 

 Form narrower; metasternum sulcate in posterior half; color usually 

 nearly black, with legs and antennae rufous or yellowish. 



5. bistriatum. 

 Form wider; metasternal sulcus obsolete; color brown. .6. bruuneum. 



1. P. Hchwarzi n. sp. — Black, shining, and almost completely glabrous; 

 form more robust than usual. Head not reticulate-punctate, the punctures 

 in mutual contact anteriorly, but distinctly separated on the occiput. Eyes 

 rather small, width of front between them from one and one-third to one and 

 one-half times their vertical diameter. Prothorax evenly convex, without trace 

 of discal oblique impressions; front margin not evidently thickened or reflexed, 

 lateral arcuate impressed line reduced to a small perforate marginal fovea ; punc- 

 tures close at sides and in front, evidently separated on the disk and posteriorly. 

 Elytral strife completely unimpressed, except the two lateral ones, the strial 

 punctures fine and equal from base to apex and scarcely larger than those of the 

 interspaces, with which they tend to become somewhat confused, especially 

 toward the suture. Metasternum rather strongly simply punctate, not at all 

 reticulate; abdomen more finely and closely punctate, the punctures unequal in 

 size. Second ventral segment scarcely as long as that portion of the metaster- 

 num at sides between the anterior transverse groove and the hind coxal plates. 

 Length 1.4-1.7 mm. 



Victoria, Texas. Collected by Mr. Schwarz. 



In two of the four examples before me the eyes are slightly larger 

 and the front correspondingly narrower, as indicated in the descrip- 

 tion above; these are doubtless males. 



The form is more robust than in any other species known to me, 

 the length being only slightly greater than twice the width, and 



