76 MANDIBULATA. — COLEOPTERA. 



and from Licinus and Rembus by the emargination of the mentum 

 being furnished with a bifid tooth. 



Sp. 1. circiimscriptus. Plate V. f. 3. Capite thoracegiie ohscuro-viridi-ceneis , 

 punciis sparsis impressis, elytris nigricantibus, striatis, margine, antennis 

 pedibusque flavis. (Long. corp. 7 — 9 lin.) 



Ca. circum'scriptus. Duftschmid. — Ep. circumscriptus. Sieph. Catal. No. 104. 

 Ca. cinctus. Marfyn Col.pl. 38. f. 39. 



Head and thorax obscure-green-brass, sprinkled with distinct deep impressed 

 dots ; the latter nearly quadrate, a Httle attenuated behind, the base slightly 

 emarginate : down the middle a sUght channel, and on each side, near the 

 posterior angle, a longitudinal impression : elytra greenish-dusky, with the 

 margin reddish-yeUow ; they are deeply striated, the intervals being smooth 

 and elevated : body duU brown beneath, with the margin of the abdomen 

 yellowish ; antennae and legs also yellowish. 



This insect is decidedly rare in England ; I have hitherto seen 

 only three specimens, one in the collection of the late T. Swainson, 

 Esq., and the other two in my own ; one of the latter I obtained 

 from the cabinet of the late Mr. Francillon, and the other from that 

 of the author of Entomologia Britannica ; but I am unable to give 

 the habitats of either. I must observe, however, that the Marsli- 

 amian specimen appears to be distinct from my other, and agrees 

 with De Jean's Ep. nigricans, in being less, more brilliant on the 

 head and thorax, the latter more attenuated behind, and in having 

 the intervals between the striae of the elytra irregularly and deeply 

 punctate ; but as that insect is said by him to be a native of India, it 

 is possible that Marsham may inadvertently have yielded to the bad 

 taste of his day by placing a foreign specimen in his collection in 

 lieu of the insect described by him as Ca. cinctus, as he assured me 

 that eveiy specimen in his cabinet was truly indigenous. 



Genus XXX. — Chl^enius, Bonelli. 



Palpi with the terminal joint ovate-truncate: labrum transverse, slightly 

 notched : mandibles slightly curved, acute, denticulated at the base : mentum 

 anteriorly emarginate, with a bifid tooth in the centre. Antenna fiUform : 

 head subtriangular, more or less attenuated behind : thorax truncate-cordate, 

 or subquadrate : elytra slightly sinuated at the extremity : vnngs two : an- 

 terior tarsi of males with three dilated joints. 



An extensive genus, containing about seventy described species. 

 It is distinguished from Epomis by the ovate terminal joint of the 

 palpi, and from Licinus by the bifid dentation of the notch of the 

 mentum. All the British species have the thorax and elytra more 



