298 CASEY 



ing abruptly very coarse and close-set but not contiguous in about 

 lateral fifth ; scutellum larger, rather well developed ; elytra not 

 quite so elongate, barely three-fifths longer than wide and 

 gradually more angular and ogival at apex, scarcely wider than 

 the prothorax and three and one-half times as long, almost 

 similarly punctate; abdomen nearly smooth, finely, sparsely 

 punctate medially. Length ^.2 mm.; width 2.5 mm. Arizona 



(locality unrecorded) prolixum n. sp. 



Form very slender, much smaller in size, more convex and sub- 

 cylindrical, generally shining, piceous-black, sometimes paler 

 anteriorly and beneath, the legs and antennae rufous ; head rela- 

 tively large, more than three-fifths as wide as the prothorax, 

 coarsely, unevenly punctate, with a feeble impression before the 

 occipital smooth spot, the sides moderately converging and 

 strongly arcuate ; prothorax two-thirds wider than long, the sides 

 evenly and strongly arcuate, more converging and subsinuate 

 anteriorly, the basal angles obtuse, not at all blunt or prominent, 

 the punctures rather coarse and sparse medially, becoming some- 

 what abruptly much coarser, dense and coalescent near the sides; 

 scutellum rather small, punctate; elytra one-half to three-hfths 

 longer than wide, somewhat abruptly and vei'y bluntly ogival at 

 apex, about as wide as the prothorax and three to three and one- 

 half times as long, probably according to sex, rather strongly but 

 not very closely punctate even laterally, where the punctures are 

 coarse and serial, largely confused toward the suture, the surface 

 normally polished but sometimes dull because of stronger micro- 

 reticulation {sczilpttle) ; abdomen rather strongly and sparsely 

 punctured medially. Length 4.S-6.0 mm. ; width 2.1-2.27 mm. 

 Arizona (near the southern boundary), Morrison \= sculptile 

 Csy .] papagonum Csy . 



17 — Body only moderately convex, less stout and smaller in size... 18 

 Body large, stout and rather strongly convex 19 



1 8 — Form oblong, dark rufo-piceous, the legs and antennae paler 



rufous, shining; head moderate, a little more than half as wide as 

 the prothorax, not very coarsely but closely punctate, the occip- 

 ital smooth spot well defined, the sides moderately convergent and 

 strongly arcuate, becoming nearly parallel toward the eyes; pro- 

 thorax three-fourths wider than long, the sides subevenly and dis- 

 tinctly arcuate, the basal angles obtuse, not blunt but not at all prom- 

 inent, the disk widest slightly behind the middle, rather finely but 

 strongly, only moderately sparsely punctate, becoming rapidly 

 somewhat coarsely, very densely and coalescently so in about lat- 

 eral fifth ; scutellum moderate, transverse, punctulate ; elytra one- 

 half or slightly more, longer than wide, rather gradually ogival 

 behind in nearly apical third, as wide as the prothorax and a little 

 more than three times as long, the punctures small and sparse but 

 strong and largely confused near the suture, coarse and alter- 

 nately closer or more widely spaced in series laterally; abdomen 

 minutely, sparsely punctured medially. Length 6.0-6.5 mm. ; 

 \vidth 2.4-2.7 mm. Arizona fusculum Csy. 



