DECARTHRON. 23 
as yet, though Decarthron ranges from the United States of North America to the 
tropics. 
§1. Thorax with a lateral fovea on each side. 
1. Decarthron suturale. 
Bryaxis suturalis, Schauf. Sechzig neue Pselaph. p. 17’. 
Hab. Mexico}. 
2. Decarthron cochlearifer. 
Bryaxis cochlearifer, Schauf. Sechzig neue Pselaph. p. 9'. 
Hab. Muxico1, Cordova (Sailé), Jalapa (Hége); Guaremana, Calderas, Dueiias, 
Torola (Champion). 
§2. Thorax without lateral fovee. 
3. Decarthron fallaciosum. (Tab. I. fig. 12.) 
Lete rufo-testaceum, nitidum ; pedibus testaceis ; antennis palpisque gracilibus. 
Long. 12 millim. 
Hab. Muxico, Cordova (Sallé); Guatemata, Cahabon (Champion). 
Antenne slender and long; none of the joints transverse—4-7 very similar to one 
another, the eighth stouter and about as long as broad, the ninth still broader and 
about as long as wide, the tenth broader than the ninth, as long as the preceding two 
together, and emarginate on one side near the tip. Head with two very large fovee 
between the eyes. Thorax subglobose, with a small distinct fovea in front of the 
scutellum. Elytra with the sutural stria very deeply excavated at the base, and with 
the discoidal stria extending one half the length; with a moderately large intra- 
humeral impression. First dorsal segment with a very distinct plica on each side, 
extending more than half the length of the segment. 
The unique Mexican example is, I presume, a male, as there is a very slight angular 
swelling of the front upper margin of the middle femur. From Guatemala also only 
a single example has been received; though much mutilated it apparently agrees 
exactly with the Mexican type. The elongate antenne and comparatively large size of 
this species give it an extreme resemblance to Bryaais. 
4. Decarthron restitutum. 
Lete rufo-testaceum, nitidum, subtiliter pubescens; antennis parum elongatis. 
Long. 14 millim. 
Hab. * Muxico, Cordova (Sallé); Guaremata, Rio Naranjo, near the city, Rio Maria 
Linda, Torola, San Gerénimo (Champion) ; tNicaraaua (Sallé).—? AMAzoNSs. 
This species at first sight resembles D. cochlearifer exactly, but besides wanting the 
lateral fovea on the thorax, is distinguished as follows :—it is slightly smaller, and 
