4 MALACODERMATA. 
Thorax transversely quadrate, the front angularly prominent and carinate, the disk 
obscurely channelled, the lateral margins irregularly rounded, parallel near the base ; 
hind angles right. Scutellum black, margined with fuscous at the apex, foveolate. 
Elytra with about one fifth at the base and one third at the apex black; punctuation 
very obsolete ; distinct transverse and indistinct intercostal lines. 
A single female is in M. Sallé’s collection. 
7. Lycus fuliginosus. (Lycostomus fuliginosus, Tab. I. fig. 5, 3.) 
Nigro-fuscus, opacus, thorace elytrorumque basi (sutura excepta) sordide testaceis, illo vitta mediana fusca. 
Mas elytris infra humeros medice ampliatis ovalibus, segmento septimo ventrali exciso. Long. 14-16 millim., 
lat. 10 millim. 
Femina latet. 
Hab. GuateMALA, Calderas (Champion). 
In form and size allied to L. godmani, but differing in its obscure coloration, and in 
the elytra being a trifle less expanded. The tibie are nearly straight, the anterior pair 
very slightly curved. This character will prevent its being confounded with L. sordidus, 
in which they are strongly curved at the base in the male. 
LYCOSTOMUS. 
Lycostomus, Motschulsky, Bull. Mose. 1861, i. p. 186. 
This genus is simply an artificial division of Zycus, founded on an Asiatic form, and 
only differing in the less expansion of the elytra in the males. The American species, 
which agree in this respect, present nothing by which we can separate them from typical 
Lycostomi. Indeed one species (L. lineicollis, Chevr.) is so like the Indian Lycostomus 
thoracicus, Waterh., that it might readily be confounded with it. Nine species from 
Central America seem properly associable with this type. 
1. Lycostomus lineicollis. (Tab. I. fig. 4.) 
Lycus lineicollis, Chevr. Col. Mex. Cent. ii. fase. vii. 149. 
Hab. Mexico, Perote, Coatepec, Esperanza (Hége), Cordova (Sailé). 
In the male the tibie are very little bent, and when closed upon the femora no space 
is left between them; the seventh segment is excised, and, with the preceding ventral 
plates, is acutely lobed at the sides. 
The figure represents a specimen from Coatepec. 
2. Lycostomus tabidus. 
Niger, abdominis apice, prothoracis lateribus, elytrisque pallide flavis. Long. 15-18 millim. 9°. 
Hab. Mexico, Peras, Oaxaca (Sallé, 2 ). 
A species nearly allied to L. lineicollis, and of which I have as yet seen only four females. 
