92 RHYNCHOPHORA. 
GEOBYRSA. 
Geobyrsa, Pascoe, Journ. Linn. Soc., Zool. xi. p. 450 (1872). 
Anephilus, Faust, Deutsche ent. Zeit. 1892, pp. 20, 34. 
Five species are known of this genus—one from Central America, three from San 
Esteban, Venezuela (two of which I have seen), and one from the Island of Guadeloupe. 
They are very like the narrower and more elongate Anchont, but are easily separable 
therefrom by the 6-jointed funiculus* to the antennew. The funiculus is short, 
gradually widening from the elongate second joint, joints 3-6 being transverse, and 6 
almost as wide as the club, These insects are usually so coated with dirt that nothing 
can be seen of the sculpture till they have been cleaned. 
1. Geobyrsa nodifera, (Tab. VI. figg. 19, 2 ; 19 @, antenna.) 
Geobyrsa nodifera, Pasc. Journ. Linn. Soc., Zool. xi. p. 450, t. 13. figg. 1, la, b*. 
Elongate-obovate, nigro-piceous, setose, the sete clubbed and forming fascicles on the prothorax and on the 
elytral tubercles. Rostrum curved, as long as the prothorax, coarsely seriate-punctate, the widened 
apical portion short in the ¢, and rather long and cylindrical in the 9. Prothorax subcylindrical, much 
longer than broad, a little narrowed in front and behind, slightly constricted before the middle, and 
emarginate in the centre at the base; the entire surface closely, deeply, and very coarsely punctate, the 
setee forming two fascicles at the apex and four in a transverse row about the middle. Elytra oblong- 
ovate, convex, closely and coarsely seriato-punctate, the interstices very narrow, the alternate ones each 
with a row of scattered setigerous tubercles. 
Length 4-5, breadth 14-2 millim. (¢ 9.) 
Hab. Guatemaua, El Tumbador (Champion); Nicaragua (Sallé), Chontales ! (Belt). 
Very like A. simoni, Faust, from Venezuela (a typical example of which is before 
me), but with the punctuation of the prothorax and elytra very coarse and foveiform, 
the prothorax without a smoother space down the middle, the setigerous tubercles on 
the elytra a little more prominent. Pascoe’s type is in a very dirty condition, and the 
puncturing of the surface was not noticed by him. Four specimens have been received 
by us. 
Sect. Il. Eyes placed at the sides of the rostrum. 
DIOPTROPHORUS. 
Dioptrophorus, Faust, Deutsche ent. Zeit. 1892, pp. 20, 35. 
This remarkable genus is peculiar to Mexico, Guatemala, and Cubay. ‘The type, 
D. ocularis, was included by Boheman in Anchonus, though he noticed that the 
coarsely facetted eyes were placed at the sides of the rostrum, instead of on the smooth 
globular portion of the head, as in Anchonus and its allies. The males, as in 
* Described by Pascoe as ? 5-jointed, and by Faust as 7-jointed. 
+ In the British Museum there is a Dioptrophorus from Cuba, labelled with the MS. name Anchonus 
angusticolls, Chevr. 
