TENEBRIONID/E 123 



possesses the tumid, angularly incised and non-retractile ligula of 

 Euschides and other subsequent genera of the tribe. The form of 

 the body in Bothrasida is somewhat ventricose, or with the anterior 

 parts reduced as in Pelecyphorus, the eyes differing in having the 

 anterior arcuate margin feebly sinuate near the middle. The 

 antennae, epistoma, labrum and palpi are of the same general type 

 as in the preceding genera, but the mentum is rather smaller, trans- 

 versely obtrapezoidal and loosely fitting the sides of the buccal 

 opening, the gular pedestal short and broad, with its flanking 

 apertures small. The legs are noticeably short but slender, the 

 tarsi slender, with short stiff black to fulvous spinules beneath and 

 the anterior tibiae minutely everted and acute externally at tip. The 

 trochantin is well developed. The prosternum is more strongly 

 declivous behind than in Pelecyphorus and obtusely rounded, de- 

 scending vertically upon the mesosternal margin; it is generally 

 impressed longitudinally between the coxae. 



The only species in my cabinet at present is the following: 



Form moderately ventricose, convex, the upper surface gradually more 

 feebly so, feebly alutaceous, deep black throughout, without metallic 

 lustre of any kind; head declivous toward the depressed epistoma, 

 coarsely, closely punctate and with minute pale hairs; labrum 

 moderately transverse, distinctly sinuate medially at apex, the 

 antennae not very stout; prothorax a fourth to third wider than 

 long, three-fifths to two-thirds as wide as the elytra, widest slightly 

 before the middle, where the sides are subinflated and rounded, 

 converging and straight thence to the rather blunt tips of the ad- 

 vanced apical angles, converging, becoming gradually deeply sinuate, 

 basally, the angles obliquely very acute and prominent; apex deeply 

 sinuate, slightly narrower than the base, which is deeply bisinuate; 

 surface broadly, moderately convex, coarsely, unevenly and in part 

 subconfluently punctate, becoming rather narrowly concavo- 

 explanate and transversely rugose laterally, toward base broadly 

 excavated along the median line, and, on each side of the latter just 

 before the middle, with a deep circular indentation, also with two 

 or three indentations placed in oblique line near lateral fourth, from 

 before the middle nearly to the base, the middle one in each line 

 the largest and deepest; apical angles with short yellow vibrissee 

 extending upon the eyes; scutellum very small, equilatero-triangular, 

 somewhat sunken, not shining; elytra two-fifths longer than wide, 

 oval, with arcuate sides, widest slightly behind the middle, the 

 thoracic angles overlapping and within the humeri, each with two 

 large, very obtuse, irregular ridges, the inner the longer, higher, per- 

 fectly continuous and nearly straight, the outer feeble and sinuous, 

 the two joined transversely and also with the lateral margin and 



