32 jJuly 
Posterior wing with narrow band of yellow edged with black, fol- 
lowing the outer margin. Two small black spots separated by a red 
spot, at the anal angle. Expanse 2 inches. 
A very distinct species, remarkable for the angular form and den- 
tate margins of the lower wings. 
I haye recently received the above seven species from Mr. Alfred 
Crossley, my collector in Madagascar. 
Halifax: June, 1870. 
On a NEW GENUS & SPECIES or CARABIDH ALLIED TO CARABUS PROPER. 
BY H. W. BATES, F.Z.S. 
Among the zoological collections lately brought home by Mr. 
Swinhoe, our Consul at Amoy in China, was a small series of Coleop- 
terous insects (unfortunately in a rather dilapidated condition) from the - 
neighbourhood of Pekin. One of the species turns out to be an in- 
teresting new form, at first sight appearing like a Oarabus, and without 
anything especially attractive in its appearance, but, on examination, 
proving to be a new genus, closely allied to the Chinese and Japanese 
groups Damaster and Coptolabrus. In the form of the head and thorax, 
however, the insect is totally dissimilar from the two genera just named. 
The thorax is much broader than long, and has no trace of lateral an- 
gulation or sinuation behind the middle ; but the head and mandibles 
may be considered as essentially the same as in Damaster, with the 
difference that they are very greatly diminished in length and increased 
in width and thickness. Together with this formation is combined a 
sinuate labrum, deeply sunk between the base of the mandibles. The 
elytra offer no trace of prolongation of the sutural apex. An essential 
character in distinguishing the genus from Coptolabrus may be also 
especially mentioned—the great relative length of the penultimate joint 
of the maxillary palpi. This character can be stated only of the female, 
as the maxillary palpi are unfortunately deficient in the male example, 
and the labial in both male and female. The mentum has no tooth in 
its emargination. 
CaTHAICUS, nov. gen. 
Elongato-ovatus. Caput cum collo crassum, mandibulis dilatatis, supra 
late sulcatis, intus medio grosse dentatis ; mentum sine dente. Thorax trans- 
versus, lateribus rotundatis, postice haudquaquam sinuatis. LElytra apice 
rotundata. 
Elongate-ovate in form, like certain species of Carabus (¢. g., C. croaticus), but 
of different facies, owing to the peculiar form of the head and thorax. Head longer 
than the thorax and nearly as broad, especially in the female, in which the head is 
