DERELOMINUS.—PHYLLOTROX. 141 
DERELOMINUS, gen. nov. 
Anterior coxe contiguous; antennz long and slender, the funiculus 6-jointed, 1 and 2 elongate, the club with 
distinct sutures ; rostrum very elongate; the other characters as in Derelomus. 
This genus includes a single species from British Honduras. 
1. Derelominus piceus, sp. n. 
Oblong-ovate, rather broad, opaque, the elytra somewhat shining, very finely and closely pubescent, piceous, 
the legs and antenne paler, the entire surface densely, minutely, rugulosely punctate. Rostrum rather 
slender, strongly curved, very elongate, much longer than the prothorax, smoother and shining at the 
tip; antenne inserted at the middle of the rostrum, slender, joint 1 of the funiculus elongate, 2-6 
gradually increasing in width, 2 twice as long as 3, 3-6 about as long as broad ; eyes not very prominent, 
finely facetted. Prothorax transverse, much rounded at the sides before the middle, immarginate laterally, 
feebly constricted in front, bisinuate at the base, nearly as wide as the elytra. Elytra shallowly 
striate. First ventral segment sulcate down the middle. 
Length 3, breadth 13 millim. (¢.) 
Hab. British Honpuras, Belize (Blancaneaur). 
One immature specimen. 
PHYLLOTROX. 
Phyllotrox, Schénherr, Gen. Cure. vii. 2, p. 189 (1843); Lacordaire, Gen. Col. vi. p. 505 ; Leconte, 
Proc. Am Phil. Soc. xv. p. 174; Kirsch, Berl. ent. Zeitschr. 1874, p. 4.05. 
Euclyptus, Dietz, Trans. Am. Ent. Soe. xviii. p. 271 (1891). 
This genus includes numerous minute American forms, about twenty of which have 
been described. It is chiefly distinguishable amongst its allies by the very short 
funiculus of the antenne, joints 3-7* of which are transverse and become progressively 
wider, 5 and 6 appearing at first sight to form part of the club, joint 1 being stout and 
rather large, the contiguous anterior coxe, and the simple tarsal claws. ‘The inter- 
mediate tibie are conspicuously dilated at the outer apical angle in some of the species. 
The ventral segments 1 and 2 are more or less connate, and 3 and 4 very short. ‘The 
pygidium, which is sometimes visible, is deeply foveate or sulcate in many of the 
specimens examined, and this is perhaps a sexual or specific peculiarity. ‘The species 
are extremely difficult to distinguish in some cases, and I am not at all certain about 
the limits of several of them. The Central-American forms may be grouped thus :— 
a. Eyes very large, contiguous . . «©. 6 6 ee ee ee ew ee ee «Species 1. 
b. Eyes smaller, somewhat widely separated. 
a’. Elytra punctate-striate, the interstitial punctuation much finer. 
a’, Rostrum not or faintly grooved above . - Species 2-9. 
6’. Rostrum distinctly grooved above . . . . . +... . . «. « « + Species 10. 
b'. Elytra with the seriate and interstitial punctuation similar . . . . . . . Species ll. 
c’. Elytra very minutely seriate-punctate, the interstitial punctuation scarcely | 
visible; rostrum grooved above; prothorax narrow . .. . . . . . Species 12. 
ad'. Elytra confusedly punctate, the punctuation similar to that of the prothorax . Species 13. 
* Leconte and Kirsch correctly describe the funiculus as 7-jointed. 
