Longicorn Goleoptera of the West India Islands. 131 
Lagochirus hinumeratiis, Thorns., Essai Class. Ceramb., 
p. 9 (1860) ; Bates, Biologia Col. v., pi. 11, fig. 11. 
Lagochirus V-alhum, Bates, Trans. Ent. Soc, 1869, 
p. 386. 
Sah. Jamaica (?); Central America, from Panama to 
Mexico. 
Fabricius and Olivier give Jamaica as the locality. I 
have only seen Central American examples, but I have 
no doubt about the accuracy of my determination of 
their species, which seems to have been entirely over- 
looked. The Fabrician name does not appear in the 
catalogue of Gemmiugor and Harold. 
Alcidion, Thoms. 
183. Alcidion socium, sp. n. 
Closely covered with a yellowish-grey pubescence, which, on the 
posterior half of the elytra, is varied with some small spots and 
short streaks of a brownish colour. Prothorax with an obtuse 
tuberosity on the middle of each side, the disk with three tubercles, 
two before, the third, very small and scarcely distinct, just behind 
the middle ; on each side, just at the base, is a small dark 
brown spot continuous with a narrow band of the same colour 
running for a short distance along the elytral epipleure. Scutellum 
with a dark brown spot on each side. Elytra somewhat elongated, 
each with a short centro-basal crest furnished at the top with tufts 
of short dark hairs ; from this crest a feebly-raised line or costa 
passes back, and unites, a short distance before the apex, with two 
or three similar lines which lie externally to it ; apex of each 
elytron obliquely truncate. Femora with the thickened part dark 
brown, the narrow basal part pale testaceous, and the whole clothed 
with greyish pubescence similar to that covering the underside of 
the body. Apex of tibiae, a spot at their base, and the two inter- 
mediate joints of the tarsi dark brown. Antennas with the basal 
joint grey, the succeeding joints greyish-testaceous, tipped with 
fuscous at their distal ends. Long. 10 — 11 mm. 
Hah. Grenada and St. Vincent (H. H. Smith) ; and 
Venezuela — Caraccas (Chevr. collection). 
The Venezuelan example agrees almost entirely in 
coloration with the others, but has the dorsal tubercles 
of the prothorax a little more distinct ; while, at the apex 
