502 BULLETIN' 182, UNITED STATES KATIO'NAL MUSEUM 



arc the same. On the other hand, tliey may well be distinct by 

 other characters as yet unrecorded. I am not now able to add any- 

 thing to the original description. 

 I find no record of its habits. 



LXXXII. Genus MICROLINUS Casey 



Microlinus Casey, 190G, p. 372. 



Genotype,. — Leptolinus piislo 'LeCont&= Microlinus ptisio (LeConte) 

 (monobasic). 



Dmgnmis. — Head and pronotuin not densely umbilicately punc- 

 tate; antennal grooves obsolete; antennae inserted close together at 

 anterior margin of head, basal segment about one-half as long as 

 head, outer segments densely pubescent from fourth joint ; labrum 

 very small, not distinctly emarginate; fourth segment of maxillary 

 palpus much shorter than the third, conical; gular sutures united 

 from near the front; neck scarcely one-fourth as Avide as head; 

 pronotum with side margin double, lines separate throughout; pnj- 

 sternum with a pair of sclerites in front of the sternite; elytral su- 

 ture beveled; middle coxae not separate; posterior coxae contiguous, 

 "triangular"'; first and second abdominal sternites absent; interseg- 

 mental membranes of abdomen marked with a pattern of angular 

 areas in longitudinal bands; anterior tarsi strongly dilated. 



Remarks. — This genus has apparently not been reported since its 

 description, since Col. Casey did not have examples of it and was 

 unable to add to LeConte's description of the type species. 



One -example from Florida and ten from the West Indies are all 

 that are now known beside the type. These all seem to be one species. 



1. MICROLINUS PUSIO (LeContc) 



Leptolinus pu»io LeContk, 18S0, p. 171.— Henshaw, 1881, p. 220.— Casey, 1906, 



p. 419.— EicHEiBAUM, 1909, p. 168. 

 Microlinus pusio (LeConte) Casey, 1906, p. 419. — EicHhXBAUM, 1009, p. 168. — 



Bernhaueb and Schubebt, 1914, p. 292. 



Description. — Head rufopiceous, pronotum, elytra, anel abdomen 

 rufocastaneous, the abdomen sometimes picescent. Read one-sixth 

 longer than wide, arcuately expanded behind tlie eyes, base straiglit; 

 antennal grooves almost completely obsolete; ocular grooves absent; 

 sparsely and moderately coarsely punctate at sides; without ground 

 sculpture. Pronotum about one-third longer than wide, widest at 

 anterior angles, scarcely narrowed to completely rounded base; smooth 

 middle space outlined by two series of six to eight punctures, and 

 with scattered punctures laterally; without ground sculpture. 

 Elytra with moderately coarse but very feeble punctures, not dis- 

 tinctly serial; indistinctly coriaceous. Abdomen finely and not 



