110 
Mr. Charles J. Gahan on the 
Hah. Grenada — Balthazar, on the Windward side 
and St. Vincent — Leeward side (H. H. Smith). 
Var. Bands of elytra obsolete. One of the St. 
Vincent specimens. 
This species is much smaller than P. femoratus, Fab., 
and has somewhat glossy elytra, the brown bands of 
which are less dark and distinct, and the first placed at a 
little distance behind the base. The head and anterior 
part of the prothorax of femoratus are dark brown, and 
the first of the three dark brown bands on the elytra 
reaches quite up to the base, but leaves a round spot at 
the shoulder testaceous. 
The genus Pentomacrus will enter the group Curii, 
established by Leconte and Horn for the genera Curms, 
Newm., and Plectromerus, Leconte. 
Ophistomis, Thomson. 
101. Ophistomis thoracicaj Fleut. and Salle, Ann. Soc. 
Ent. Fr., 1889, p. 465. 
Hah. Guadeloupe — Camp Jacob (Delauney). 
102. Molorchus ruficollis (Dej.), n. n. 
Molorchus sanguinicollis , Chevr. {nec Oliv.), Ann. Soc. 
Ent. Fr., 1862, p. 257. 
Prothorax red ; the rest of the body, the legs, and the antennas, 
black. 
Hah. Cuba and North America. 
In general form this species resembles M. himaculatus^ 
Say, and M. longicollisj Lee, but it is easily distinguished 
by its colour. 
The female example in the British Museum collection 
is the M. ruficollis of Dejean, and is ticketed Cuba, D. 
Escher ; the 6 type is ticketed Amer. bor., and was 
received by Dejean from Leconte. 
How Chevrolat, if he had looked at Olivier's figure, 
or read his description, could have taken this species to 
be the Necydalis sanguinicollis of Olivier, passes my 
comprehension ; yet he has deliberately displaced the 
latter from its true place in Stenopterus, where it was 
placed by Leconte and other authors, who correctly gave 
Stenopterus sanguinicollis, Say, as a synonym. 
