592 STAPHYLINIDA. 
species also inhabit North America. Only sixteen species are described, and most of 
these are from the Amazon valley; eight inhabit Central America. These insects 
are found on the sandy banks of streams (Champion). 
1. Kchiaster solitarius. 
Elongatus, fuscus, capite prothoraceque ferrugineis, elytris ad basin flammulatim testaceo-signatis, antennis 
pedibusque flavis. 
Long. 5 millim. 
Hab. Panama, David (Champion). 
Antenne about as long as the head, a little thicker externally ; third, fourth, and fifth 
joints longer than broad, the sixth small, as long as broad, the penultimate joint slightly 
transverse. Head opaque, longer than broad, the sides curvate behind the eyes. 
Thorax very long, twice as long as broad, only one half the width of the elytra, much 
narrowed in front, less so behind, not impressed, and like the head coarsely but indi- 
stinctly sculptured. Elytra rather longer than the thorax, remarkably coarsely punc- 
tured; fuscous, with two basal longitudinal marks, the inner one extending further 
backwards than the outer. Hind body with the four basal segments very coarsely 
sculptured, fuscous, the next segment smooth, black. 
This insect is allied to the Amazonian £. signatus, but is smaller and more coarsely 
sculptured, with the head narrower, and more curvate at the sides. Unique. 
2. Echiaster filum. (Tab. XV. fig. 13.) 
Elongatus, angustus, opacus, testaceus, elytris dimidio apicali nigro, abdomine ad apicem fusco variegato. 
Long. 3 millim. 
Hab. GuatEMALa, Panzos, Coatepeque (Champion); Nicaragua, Chontales (Janson). 
Antenne short, the four penultimate joints strongly transverse, the third, fourth, and 
fifth joints small. Head large, rather broad, subtruncate behind, the hind angles 
rounded, the eyes placed at the middle of the sides, densely and finely sculptured, dull. 
Thorax rather small, longer than broad, only about one half the width of the head, 
obscurely carinate along the middle. Elytra a little longer than the thorax, festooned 
behind with black. Hind body very slender and elongate, quite finely sculptured, the 
penultimate segment in greater part infuscate, the terminal segment with fuscous hairs 
behind. 
Three examples. 
3. Echiaster orbifer. 
Testaceus, opacus, confertissime punctatus, abdominis segmentis duobus ultimis nigris; capite lato, orbicu- 
lato, oculis magnis. 
Long. 3 millim. 
Hab. PanaMa, San Miguel in the Pearl Islands (Champion). 
