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REPORT ON ZOOLOGY, MDCCCXLII : 
some (A.) the thighs are inwardly hollowed and abruptly widened ; 
Ludius, Latr., Beliophorus, Esch., Tomicephalus, Latr., Hemiops, Esch. 
Ludius, with a distinctly separate apparent joint at the point of the 
eleventh joint of the antennsD, contains El. ferrugineus, L, ; L. coracinus, 
from North America ; El. theseus, Germ. ; and L. decoriis, new species 
from Valparaiso. Beliophorus, Esch., having the eleventh antennal 
joint undivided and slender, was first characterized by the articulation 
of the hind leg being at the angle of the dilated thigh ; it is confined 
to the B. cehrionoides, Esch., from the Cape;* the other species 
mentioned by Esch., El. mucronatus, 01., which he did not know, 
has been described as a different genus, and been named by Hope 
Oxynopterus (vide sup.). Tomicephalus, Latr. {Megacnemius, Esch,), 
has also a simple eleventh antennal joint, but the thighs are consider- 
ably dilated towards the inside at the bend ; the only species is T. san~ 
guinicollis, Latr. Hemiops, with its labrum emarginated anteriorly, 
contains H. Lap. {luteus,J)e^.), from Java; H. nigripes, Lap., 
Germ. ; and H. ohinensis, new species from China. In the others, (B.) 
the thighs are gradually dilated internally. Gorymhites has only the 
second antennal joint small, the third of the form of the fourth. Dia- 
canthus and Pristilophus have the second and third antennal joints 
small, the third at least narrower and shorter than the fourth. In the 
former, the thorax is shorter, and the elytra become broader behind 
the middle. This distinction, however, does not appear to me satis- 
factory. I would rather say, that in Diacanthus, the mouth is covered 
by the prosternum, in Pristilophus it remains free ; in which case, at 
least, Latreille’s typical species, E. melancholicus, would remain in the 
latter genus, and D. corporosus and submetallicus, two new species from 
North America, costalis, Payk, and guttatus, Dej., would belong also to 
Pristilophus. P. Icevigatus ; Reichei, a new species from South Carolina ; 
and morio, F. ; which together form a small sub-division with projecting 
mesosternum ; also cethiops, Hbt,, and insitivus. Germ, (depressus, 
Meg.), are to be placed under Diacanthus. Thus, Corymbites contains 
twenty-five, Diacanthus twenty-eight, and Pristilophus thirteen species. 
Finally, Cardiorhinus, Esch., differs from the former by the emargi- 
nated labrum. The number of its species mentioned is not more than 
eleven, but the author has not had the use of the Berlin collection during 
his labours at this genus. 
Germar (ibid. p. 98) has brought together the species of the genus 
Campsosternus, taking Hope’s enumeration as his basis. (Vide Ann. 
Nat. Hist. viii. p. 453.) A number of Hope’s species are either unknown 
* Beliophorus, Esch. mit imgetheiltem 11. Fiihlergliede, mid sehr schmaleii, 
erst an der Einlenkuiig der Hinterbeine im Winkel erweiterten Sclieiikel- 
decken ist auf den B. cehrionoides Esch. von Cap beschrankt. 
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