88 
Mr. Charles J. Gahan on the 
Elateropsis, Chevrolat. 
33. Elateropsis lineataj Linn. 
? Ceramhyx lineatus, Linn.^ Syst. Nat._, Ed. x., p. 389 
(1758). 
? Solenoptera lineataj Duval^ Sagra's Hist. Cuba, 
p. 260, pi. 10, fig. 2. 
? Elateropsis lineataj Chevr. (partim), Ann. Soc. Ent. 
Fr., 1862, p. 269 ; Gatian, Ann. and Mag. Nat. 
Hist. (6) vi., p. 28. 
6 Prionus fuliginosuSj Fabr., Syst. Ent., p. 160 (1775). 
6 Elateropsis suhpundatus, Chevr., Ann. Soc. Ent. 
Fr., 1862, p. 271. 
Hah. Jamaica and Cuba. 
When writing on this group of beetles a few years ago 
{op. supra cit.)j I put forward the suggestion that the 
forms, devoid of bands of white pubescence, and described 
as a distinct species by Fabricius, were really males of the 
white-banded lineatus of Linnaeus. Mr. Cockerell, in 
looking up the literature bearing upon the natural history 
of Jamaica, found that Gosse had previously made the same 
suggestion, of the truth of which I have since been 
suflBciently convinced. For not only have the two forms 
been taken in copula by a correspondent in Jamaica, 
Mr. Wickham also has examples of E. rugosa taken in 
copula, which exhibit the same sexual difference in re- 
spect of the white bands j and some French collectors had 
informed M. Salle of a similar fact. 
This example of a marked difference in the coloration 
of the two sexes is of interest, because it is one of those 
instances, very rare in the Coleoptera, as in other orders, 
in which the male is more simply, and apparently less 
conspicuously coloured than the female. 
The dissimilarity of coloration in the sexes of this genus 
occurs only, as far as I know, in three species, viz., E. 
lineataj E. punctataj and E. rugosa. In E. scahrosa, which 
is evidently very closely allied to E. punctata, the females 
resemble the males in being without pubescent white 
bands, whereas the males of the two species are so much 
alike that it becomes a matter of difficulty to distinguish 
them. 
