HETEROBRENTHUS.—ESTENORHINUS. 43 
and a few short marks at the base and behind the middle ; the sculpture at the apex 
very coarse, the apices obtuse, almost rounded; the third interstice is raised throughout, 
more strongly near the apex. Anterior femora strongly toothed, the others unarmed. 
Anterior tibia with a strong tooth on the middle of the inner margin ; underside of 
head and metarostrum with very coarse foveoles. 
We have received only one example from each locality, and amongst them there is 
but one male; it has the metarostrum and posterior part of the prorostrum obsoletely 
sulcate; the two teeth on the front legs are longer than they are in the female, and 
the apices of the elytra are less rounded, almost straightly truncate ; the posterior 
femora are compressed and laminate at the base. 
ESTENORHINUS. 
 Estenorhinus, Lacordaire, Gen. Col. vii. p. 431 (1866). 
_ This genus comes excessively close to Arrhenodes, but may be distinguished by the 
fact that the back of the head on the upper surface is not separated from the neck by 
any depression. ‘This character is common to both sexes, whereas those mentioned by 
Lacordaire will distinguish only the large males of the two genera, but not the small 
males or the females. 
The genus consists of four or five species found in equatorial America and Cuba. 
1. Estenorhinus guttatus, sp.n. (Tab. IT. figg.11,¢; 11a, profile of head.) 
Rufus, thorace nigro-bisignato, elytris guttis flavis elevatis ornatis. 
Long. 17-27 millim. 
Hab. Nicaraeva, Chontales (Belt); Panama, Volcan de Chiriqui 2500 to 4000 feet 
(Champion). 
This insect is of shorter form than E. designatus, Boh., is of a brighter red colour, 
and has the yellow marks on the elytra differently disposed, they being distributed 
in a more irregular manner. Antenne moderately long, red. Metarostrum slightly 
sulcate along the middle. Thorax pale red, with a broad black mark on each side, 
which reaches neither the base nor the front margin. Elytra red, rather short; surface 
slightly uneven, obsoletely punctate-striate, with numerous conspicuous, yellow, slightly 
raised spots, disposed as follows: on the third interstice two at the base, nearly united 
to form a line, one behind the middle, and an apical short line; on the fourth 
interstice a spot on the middle and one behind the middle; on each of the fifth and 
sixth interstices a .spot before the middle and one behind the middle; on the 
seventh interstice a spot behind the middle, on the eighth a large spot behind the 
shoulder, and on the ninth one near the apex. Apices of the elytra distinctly 
bidentate. Under surface red. 
Seventeen examples. 
GG 2 
