DERODERUS.—EUSTILICUS. 579 
sively densely and coarsely punctate. Thorax broad, but rather longer than wide, greatly 
narrowed in front, moderately so behind, densely and coarsely punctate, with a broad space 
along the middle smooth and shining. Elytra rather shining, of a sordid red colour, 
rather finely punctate. 
This species is a most difficult one to place; it agrees almost as well with Stilicus as 
with the typical species of Deroderus, and probably should form a genus between the 
two. The shorter and stouter tarsi and the less development of the angular sides of 
the thorax are the chief characters that forbid its being located in Stilicus. 
EUSTILICUS. 
Corpus elongatum, subtiliter punctatum. Labrum permagnum, medio elongatum et fortiter bidenticulatum. 
Mandibule latissime. Caput collo angustissimo. Prothorax angulis anterioribus ad latera sitis, brevissime 
rotundatis. Prosternum elongatum. 
This genus is distinguished from Stzlicus by the labrum being longer in the middle 
and by the thick mandibles, by the very elongate penultimate joint of the maxillary 
palpi, and by the complete absence of the lateral angles from the sides of the thorax. 
The prosternum is very elongate, not concave, but carinate for its whole length. The 
antenne are elongate. The legs long and rather robust. The sculpture is totally unlike 
that of Stilicus, being remarkably fine and obsolete. The basal joint of the hind foot 
is very elongate, longer than the terminal joint. 
I am not acquainted with any species besides those here described. 
1. Bustilicus crassidens. (Tab. XV. fig. 4.) 
Fusco-niger, opacus, antennis pedibusque fusco-rufis, elytris ad summum basin sordide ferrugineis ; capite pro- 
thoraceque opacis, fere invisibiliter punctulatis, illo subelliptico ; elytris omnino densissime subtiliterque 
subscabroso-punctatis, absque punctis majoribus. 
Long. 8 millim. 
Hab. GuatTeMata, near the city (Champion). 
Antenne rather elongate, extending nearly to the base of the thorax; third joint a 
good deal longer than the second. Head and thorax scarcely visibly punctured ; eyes 
very small. Elytra with a remarkably dense, fine but scabrous punctuation. The male 
has the hind margin of the penultimate ventral segment broadly but slightly emargi- 
nate; that of the terminal segment is also broadly emarginate, but in a more rounded 
manner. 
Two examples, found on the sandy banks of small streams. 
2. Hustilicus orbifer. 
. Fusco-ferrugineus, capite nigricante, pedibus abdominisque apice sordide testaceis ; capite prothoraceque opacis, 
omnino densissime subtilissimeque punctatis, illo suborbiculare; elytris densissime subtiliterque sub- 
scabroso-punctatis. 
Long. 7 millim. 
4 EK 2 
