356 Memoirs on the Coleoptera 



head and prothorax, the latter large but not inflated, a third wider than 

 long, the sides parallel and feebly arcuate, gradually rounding and 

 converging in about anterior half, the subtubulate apex half as wide as 

 the base, which is as in the preceding but with the punctures of the mar- 

 ginal series closer, uniting laterally to form a fine canaliculation; punc- 

 tures fine and sparse but rather distinct, broadly wanting medio-basally, 

 the lateral oblique rugulosity distinct; scutellum flat, ogival, only slightly 

 wider than long; elytra only a fourth or fifth longer than wide, narrowly 

 parabolic at tip, fully as wide as the prothorax and, at the rounded 

 humeral callus, a little wider, scarcely one-half longer; surface undulated; 

 striae deep, finely punctate along the bottom, the interstitial punctures 

 nowhere distinct; pygidium convex, rather coarsely, densely punctate; 

 under surface dull, strongly and densely punctate, the abdomen shining 

 and sparsely so except laterally; femora moderately and closely punctate. 

 Length (9) 2.5 mm.; width 1.2 mm. Texas (Brownsville), — Wickham. 

 One specimen. 



Allied rather closely to perditus but perhaps somewhat smaller 

 and not at all cuneiform, the prothorax not inflated and not at all 

 wider than the elytra. 



The species from Temax, in northern Yucatan, identified by Mr. 

 Champion as cuneatus, is closely allied but not identical; the black 

 polished surface is evidently aeneous, the thoracic punctures less 

 minute and closer and the fine elytral grooves are not similarly 

 smooth along their edges but feebly crenulate, especially toward the 

 sides; the prothorax is less transverse than in cuneatus, more closely 

 resembling that of perditus, but the sculpture is much stronger 

 than in either; it may be called Madarellus impar (new name), 

 and the specimen at hand, kindly sent by Mr. Champion, is 2.6 

 by 1.25 mm. in size. 



The following is another species doubtless hitherto confounded 

 with cuneatus: 



*Madarellus hondurasensis n. sp. — Oblong-subcuneiform, strongly 

 convex, polished, deep black, feebly aeneous; beak in the female slender, 

 arcuate, loosely punctulate and as long as the head and prothorax, 

 the latter subquadrate, two-fifths wider than long, the parallel sides 

 distinctly arcuate, strongly rounding inward anteriorly, the subtubulate 

 apex half as wide as the base, the latter transverse, with abrupt rounded 

 lobe, the adjacent series of fine punctures evident; punctures very fine, 

 sparse, largely wanting medially and basally; scutellum flat, ogival, a 

 little wider than long; elytra undulate, scarcely one-half longer than the 

 prothorax and somewhat narrower, ovoidal, the humeral callus rather 

 prominent; striae nearly as in cuneatus; intervals each with a single 

 widely spaced series of very minute though visible punctures; sterna 

 coarsely, closely punctate, the abdomen less so, more finely and rather 



