COLEOPTERA. 101 



arclied laminae of the seventh segment in the males ot the second 

 division. 



7. A. stilicoides Lee. — Form rather slender ; castaneous, abdomen 

 darker. Head and prothorax glabrous, strongly and minutely granulose, 

 almost opaque ; elytra and abdomen clothed rather densely with very short 

 fine recumbent pubescence, less strongly ga-anulose, feebly shining. Head 

 robust ; sides parallel and arcuate behind the eyes ; posterior angles acutely 

 rounded ; upper surface longitudinally impressed near the very short and 

 prominent antennal tuberculations, just behind which there is a very small 

 and distinct puncture on each side ; in the middle of the disk there is a very 

 short and somewhat feeble canaliculation ; epistoma strongly produced and 

 arcuate anteriorly ; antennae very short and robust, infuscate toward tip, 

 last joint short, most robust, conoidal. Prothorax very small, trapezoidal, 

 widest at the apical angles ; sides nearly straight ; disk scarcely more convex 

 than the head ; base squarely truncate ; anterior angles rounded, posterior 

 obtuse and very slightly rounded. Elytra at base wider than the prothorax ; 

 sides rather strongly divergent posteriorly, sinuate near the humeri, feebly 

 arcuate toward the apices, slightly shorter than the width at base ; almost 

 transversely truncate posteriorly ; much longer than the prothorax. Scutel- 

 lum very small, broadly rounded behind. Abdominal segments rapidly and 

 arcuately increasing in width ; border very strong. Legs and tarsi slender, 

 third joint of the latter much less than twice as long as the two preceding 

 together. 



Male. — Emargination of the sixth segment very small, scarcely one-eighth 

 as wide as the segment, feebly curvate, edge very narrowly and feebly re- 

 flexed ; seventh and eighth segments scarcely modified, the former slightly 

 flattened. 



Female. — Unknown. 



Length 2.0 mm. 



Florida (Baldwin and Enterprise), 2. 



The characters of this species differ so strikingly from those of any- 

 other, that it may after careful dissection necessitate the creation of 

 a subgenus. The feeble sexual characters, narrow and prominently 

 arcuate epistoma, granulate surface, and short terminal joint of the 

 maxillary palpi are characters foreign to the remainder of the genus. 

 These may be accompanied by others, of a structural nature in the 

 oral organs, of more positive value. 



The longitudinal elevation at the anterior portion of the pronotum 

 is excessively feeble, and is obscurely triple, the ridges being sepa- 

 rated by very broadly rounded feeble impressions. The elytra and 

 abdomen are not punctulate, but obsoletely granulate. The sexual 

 characters are not exposed to view in Dr. LeConte's type, the other 

 specimen is a male and is the one above described. 



