386 MEMOIRS ON THE COLEOPTERA 



rounded in apical third; striae not very fine but shallow and groove- 

 like, with small, close-set and rather indistinct punctures, the sev- 

 enth finer though distinct basally; intervals barely more than flat. 

 Length (9 ) 6.0 mm.; width 2.2 mm. Texas (Galveston). 



accelerans n. sp. 



Form more elongate and parallel, feebly convex, black, the thoracic base 

 and distal parts of the elytral suture feebly rufescent; under surface 

 piceous-black, the legs pale; elytra not distinctly iridescent; head 

 elongate, with long neck and rather large prominent eyes, four-sev- 

 enths as wide as the prothorax; labrum and mandibles dull rufous, 

 the latter blackish distally; antennae fusco-testaceous, clearer bas- 

 ally, the palpi pale; prothorax a fourth wider than long, subparallel, 

 with very evenly, moderately rounded sides, the edge finely reflexed; 

 apex deeply sinuate, with distinct though blunt angles, very much 

 narrower than the base, which is margined, except medially, and with 

 blunt and moderately obtuse angles; impressions obsolete; medio- 

 subbasal punctures very few, feeble and indefinite; foveae deep, 

 almost attaining the base; elytra more than one-half longer than 

 wide, only a fourth wider than the prothorax, rapidly and obtusely 

 rounded at apex, parallel, with the nearly straight sides gradually 

 rounding basally; subapical sinus very moderate; striae moderate, 

 groove-like, distinctly though finely, subcrenulately punctate, the 

 seventh distinct though finer; intervals broad, barely at all convex, 

 rapidly very narrow on the apical slope, where the striae become 

 coarser. Length (cf) 7.0 mm.; width 2.7 mm. Louisiana (Mon- 

 roe). A single example taken by the writer parallelus n. sp. 



14 Prothorax widest posteriorly. Body moderately stout and unusually 

 convex, highly polished and deep black, the elytra without evident 

 trace of iridescence; under surface and legs black, the tarsi rufous; 

 head four-sevenths as wide as the prothorax, slightly elongate, with 

 long neck and rather large prominent eyes; antennae piceous, the 

 first joint pale; mandibles blackish, the labrum dark; palpi testa- 

 ceous; prothorax scarcely a fourth wider than long, the sides broadly, 

 subevenly arcuate, gradually converging from near the base to the 

 apex, which is very moderately sinuate, with broadly rounded angles 

 and much narrower than the base, the latter strongly margined ex- 

 cept medially and with obtuse and distinctly rounded angles; lateral 

 margins strongly reflexed, narrowly toward apex and more broadly 

 posteriad, the surface declivously subexplanate basally; impressions 

 obsolete, the incised apical line entire; medio-subbasal punctures 

 few but distinct; foveae only a fourth the total length, not quite 

 attaining the base, deep; elytra one-half longer than wide, only a 

 fifth wider than the prothorax, ogival in apical third, the sides parallel 

 and very feebly arcuate, more so basally the sinus short and deep; 

 striae rather coarse and deep, s,trongly and crenulately punctate, the 

 seventh obsolescent except apically; intervals broadly and moder- 

 ately convex. Length (cf ) 9.3 mm.; width 3.5 mm. Florida (Dun- 

 edin), Blatchley. Tampa, LeConte calathinus Lee. 



Prothorax more of the usual form, widest at or near the middle; lateral 

 thoracic margins finely, evenly reflexed throughout the length. . .15 



