H. C. FALL. 61 



El Paso, Texas. A single specimen taken and kindly given me 

 by Mr. Knaus. 



This species is nearest adspersus, but seems quite surely distinct 

 by the more widely separated eyes, lather more elongate and 

 parallel form and elytral pattern. The arcuate series of white 

 spots extending obliquely inward from the humeri to the suture, 

 so persistent in adspersus, is here represented by a single small 

 spot posteriorly adjacent to tlie humeral umbone. 



PIAZITRUS Sch. 



P. floi'itlanus n. sp.— Inteimediate in form between oculatus lil^(^ californi- 

 cus, but much larger than either. Dark brownish eastaneous, rather obscurely 

 mottled with white and fulvous scales, whicli are of broader form than in ocula- 

 tiis ; white sutural spot of the elytra wanting, as are the basal thoracic spots- 

 Eyes still more narrowly separated than in oculatus ; second funicular joint of 

 antennae fully twice as long as the first and equal in length to the four following 

 united. Elytral striae wider, the punctures larger, leaving the intervals nar- 

 rower, more convex and more irregular than in oculatus. Otherwise nearly as in 

 oculatus. Length 5i mm.; width two and one-fifth mm. 



Florida (Key Largo and Elliot's Key). 



Described from two examples received from Mr. Beyer. 



ZYGOPS Sch. 

 Z. adustu^i n. sp. — A little less lobust than either seminiveus or suffu-ms, the 

 sides of the prothoras less strongly convergent in front and more abruptly sub- 

 rectangularly constricted at apex, with the surface sculpture distinctly more 

 coarsely cribrate punctate than in seminiveus. The prothorax is blackish brown 

 above, the sides and under surface uniformly pale ochreous; elytra deep umber 

 brown, feebly mottled, the suture paler; scales beneath in great part pale ochre- 

 ous, the sides of the metasternum broadly, sides of second ventral segment nar- 

 rowly, and the last ventral, except at the middle, dark brown; legs ochreous, 

 femora suffused with pale brown apically, the subapical aunulus not very well 

 defined. Length 7.5 mm. 



Arizona (Wickham); Santa Rita Mountains, Arizona, in Agave 

 palmeri (Hubbard and Schwarz collection). 



The form and sculpture of the prothorax, and the color readily 

 distinguish this species from seminiveus and suffusus. In the last 

 named species a good character not mentioned by Casey exists in 

 the more broadly rugose discal elytral costse, these being relatively 

 narrow and with a single series of asperities in seminiveus. There 

 is some individual variation, but the ditference is obvious enough in 

 all specimens seen. 



TBANS. AM. KNT. SOC. XXXII. JANUARY, 1906. 



