Coleoptera of St. Vincent, Grenada, and Grenadines. 259 
Head closely and finely rugose-punctate, flavous, with a darker 
central line ; the eyes large and rather closely approximate in the 
male, the dividing space being narrower than their diameter ; an- 
tenn long and slender, extending nearly to the middle of the 
elytra, pale flavous, the apex of the outer joints darker, the third 
joint nearly three times longer than the second, the terminal joints 
very slightly widened at the apex ; thorax twice as broad as long, 
the sides strongly deflexed, the lateral margins nearly straight, the 
surface closely covered with brown punctures, which are a little 
less crowded at the sides than at the middle, the interspaces form- 
ing small, flavous, raised, smooth spaces, the margins very narrowly 
flavous and raised, the middle with a broad and the sides with a 
narrow brownish band, these being sometimes entirely obsolete ; 
scutellum raised, its apex truncate, piceous ; elytra somewhat 
similarly sculptured to the thorax, the punctures near the anterior 
part of the suture confused and closely placed, forming irregular 
rows at the sides, where they are less crowded, but extending 
quite to the apex, the interstices raised into narrow, very irregu- 
larly placed longitudinal smooth spaces, the shoulders and some 
small irregular spots on the dise dark brown, the disc usually with 
a small raised smooth flavous spot near the suture, about the 
middle ; pygidium flavous, finely pubescent ; the breast more or 
less darkened; abdomen and legs flavous, the femora with a 
rather large, the tibize with a smaller piceous spot. 
Hab. St. Vincent’; Grenada—Mount Gay Estate (Lee- 
ward side), Caliveny and Lake Antoine Estates (Wind- 
ward side); Grenadines—Union I., Becquia I. 
This Pachybrachys is very closely allied to P. conglomer- 
atus, Suftr., P: costipennis, Suffr., and P. pumicatus, Suftr. 
(from Cuba), and P. punctatissimus, Jac. (from Mexico), but 
seems to differ in several. respects from all these species. 
The following are the principal points of distinction :—P. 
pumicatus is smaller, differently marked, and has smooth 
apices of the elytra, according to Suffrian ; P. costipennis 
has the disc of the thorax impunctate, the eyes of the 
male nearly contiguous, and the elytra differently sculp- 
tured; P. conglomeratus is larger, and has very regu- 
larly punctured elytral striz, with a yellow transverse 
band, etc. ; lastly, P. punctatissimus has shorter and en- 
tirely black antenne, with greatly widened terminal 
joints, and a more closely punctured thorax. The 
prosternum in the present species is rather long, 
