162 
REPORT ON ZOOLOGY, MDCCCXLII : 
According to Rosenhauer, these three forms are found at Erlangen as 
well as in Austria. There are still some other forms of the C. violaceus, 
which are looked upon as peculiar species; and in other species, local 
varieties have been considered as species by entomologists, which De- 
jean, even against his own conviction, has had the modesty to describe 
as such. 
Fischer von Waldheim (Rev. Zool. p. 270), wishes his genus Cal- 
listhenes, disallowed by Dejean, to be again established, as necessarily 
separated from Calosoma by its peculiar habit, and want of wings. This 
necessity acknowledged, we must often reckon one species to two genera, 
as it happens, that one and the same species is sometimes winged, some- 
times wingless. The genus Callisthenes would thus require a better 
foundation. The author reckons in it three species : C. Panderi, 
C. MotschoulsMi (Car. orhiculatus, Motsch.), and O. Fischeri, Men., 
from the Chinese confines. Guerin adds a fourth species (ibid. p. 271), 
C. Reichei from Persia, distinguished from 0. MotschoulsMi by the 
smoothness of the upper surface, whilst the other, according to Mots- 
chofulsk, has a fine scaly coat. 
The Helluonides have been subjected to a revision by Reiche (Ann. 
d. 1. Soc. Ent. d. Fr. xi. p. 323), the group fixed, the genera hitherto 
characterized confirmed, and some new ones added. The division of the 
author is as follows : — The wingless are, Omphra, Leach, with trun- 
cated labrum ; Helluo, with long labrum concealing the mandibles. The 
rest are winged : one group having three long spine-like lobes to the 
mentum, and (in Macrocheilus) the last joint of the labial-palpi cylin- 
drical, or (Acanthogenus) triangular hatchet-shaped ; in the other group 
the lobes of the mentum are short and broad, and the inner one remark- 
ably shorter. The labrum is either short and truncate, as in Planetes, in 
which the posterior angles of the thorax are simple, and Dialodontus, in 
which they are reflexed ; or has a projecting tooth in the middle, in Pleu- 
racanthus ; or it is long and covers the mandibles, in Helluomorpha. 
Enigma is a ninth genus, the characters of which Reiche could not 
make out. The species are divided as follows : — 
Omphra, East Indian ; hirta, F. (tristis, Leach) ; pilosa, atrata, Kl. ; 
and a new species, 0. complanata, from anterior India. 
Helluo, New Holland ; costatus. Bon, 
Enigma, Newm., New Holland ; iris, Newm. 
Macrocheilus, Kirby, Hope, East Indian; 2>-pustulatus, Dej. (Ben- 
soni, Hope, 4:-maculatus, Guer). 
Acanthogenius, Reiche, new genus, Asiatic and African; impictus, 
Wied. ; grandis, Dej. ; lahrosus, Dej. ; hisignatus, Reiche (bimacula- 
tns, Dej.); higuttatus, Gorj ; distactus, Wied. ; dorsalis, K\. ; crucia- 
tus, Marc. ; and a new species, scapularis, Reiche. 
Planetes, MacLeay, East Indian ; himaculatus, MacLeay (stigma, F., 
206 
