TENEBRIONHLE 167 



marginal carina extending within a sixth of the tip, the dorsal costa 

 ending near the suture at about a third from the tip; antennae and 

 legs very long. Length (c?) 10.0 mm. Lower California. [Pelecy- 

 phonts couiiivens Lee.] connivens Lee. 



Body somewhat as in bifurca though smaller and much more slender, 

 black, dull and densely coated with earthy matter through which 

 the short stiff and simple bristle-like setae protrude; head impressed 

 as in bifurca but more feebly, the antennae more slender; prothorax 

 slightly wider than long, the subparallel sides evenly and more 

 strongly arcuate, not sinuate anteriorly, where the angles are less 

 produced anteriorly but acute, the basal angles abruptly and strongly 

 everted and finely acute, very prominent; surface very tumid medi- 

 ally, the tumidity divided longitudinally by the broadly, deeply 

 impressed and entire median line, which narrows toward apex and 

 base, the lateral slopes of the tumidity feebly, longitudinally im- 

 pressed at lateral fourth of the width, these furrows not quite at- 

 taining apex or base; sides more broadly and shallowly concave than 

 in bifurca; punctures coarser, dense but not so muricate, the stiff 

 short hairs fulvous; base similar; elytra not at all wider than the 

 prothorax, three-fourths longer than wide, gradually very acute 

 behind the middle, where the sides are arcuate, gradually converging 

 and straighter to the similar basal angles, which, however, are far 

 within the thoracic angles; surface flat, though similarly steeply 

 declivous between the costa and the margin, which is as in con- 

 nivens; suture narrowly elevated in a way not at all noticeable in 

 bifurca, the short stiff blackish setae differing greatly from those of 

 bifurca in being simple and not squamiform and in being evenly 

 distributed, abdomen closely perforato-punctate, not at all asperu- 

 late; legs relatively longer and much stouter. Length (o") 9.0 mm.; 

 width 3.4 mm. Lower California (Cape San Lucas), Chas. Fuchs. 



tantilla n. sp. 



Body still more slender than in tantilla, deep black, not coated with 

 earthy matter, opaque, the elytra slightly shining; head similar 

 though more deeply impressed, the short erect bristles dark; pro- 

 thorax similar but about as long as wide, the apex very nearly as 

 wide as the base and more deeply sinuate, with the acute angles more 

 anteriorly projecting; sides moderately arcuate, becoming feebly 

 sinuate anteriorly, the basal angles even more obliquely everted and 

 becoming finely spiculiform toward tip; surface similar, the median 

 entire sulcus even broader and deeper, the lateral moderate; side 

 margins more crenulate and without so distinct a fringe of short 

 erect hairs; elytra more elongate, scarcely as wide as the prothorax, 

 nearly twice as long as wide, the ridges as in tantilla, the humeri not 

 obtusely angulate as in that species but minutely, denticularly 

 prominent laterally; surface nearly flat, with rather coarse perforate 

 punctures disposed in a few nearly even longitudinal series, the 

 interspaces scarcely at all punctulate but clothed loosely with rather 

 long and closely recurled stiff but nearly simple dark yellow hairs ; 

 abdomen more coarsely, very densely cribrate, the punctures simi. 



