166 MANDIBULATA. — COLEOPTERA. 



— Rev. L. Jenyns. " Frostenden, Suffolk."—!^. C. Hewitson, Esq. 

 " In decayed ash-wood, Allesleyand Warwick." — Rev. W. T. Bree. 

 " Epping."— Mr. Donbledaj/. « Nottingham;'—/. Marlow, Esq. 

 " On an old paling in Lord Dudley's park at Himley, near Dudley, 

 August, 1827."— Mr. Westwood. " Old Sarum."— Mr. Ingpen. 



Genus CLXXXVIII. — Ltjcanus Auctorum. 



Antennas longer than the thorax, the basal joint curved, very long, clavate; 

 second short, subclavate ; third longer, subcylindric ; fourth and fifth short, 

 subclavate; sixth short, with an acute process within— in the female these 

 five last joints are of nearly equal length and bulk, and transverse — the re- 

 mainder forming a pectinated club of four nearly equal lamellae, the outer 

 one being largest. Palpi, maxillary elongate, slender ; the second joint 

 longest : labial short, the joints subequal : mandibles dentate internally, very 

 large and glabrous in the males : mentum broad, transverse : labium bifid . 

 head broad; in the males broader than the thorax, and margined : thorax with 

 a dorsal channel; the lateral margin obliquely truncate posteriorly: body 

 somewhat depressed: scutellum rounded: legs rather long; anterior tibia 

 dilated, compressed in the female, dentate : posterior more or less spinose : 

 tarsi long, simple. 



The male Lucani may be instantly recognized by their gigantic 

 mandibles, which in the indigenous species are furcate at the apex, 

 and more or less considerably dentate within ; and the females may 

 be known from the others of the family by the oblique truncation 

 of the lateral margin of the thorax, the broad, dentate anterior, and 

 spinose posterior, tibiae, small head, with concealed labrum, quadri- 

 laminate club of the antennae, &c. 



Sp. 1. Cervus. Fusco niger, elytris mandihulisque fusco-castaneis. (Long. 



corp. $ 1 unc. 5 lin.— 2 unc. 9 lin. :— $ 1 unc. 1 lin. — 1 unc. 8 lin.) 

 Lu. Cervus. Linne.—Don. i. pi. 13. $ — Steph. Catal. 104. No. 1087. 



Deep fuscous-black, slightly shining, with the mandibles and elytra more or 

 less castaneous; head larger than the thorax, flat above, retuse anteriorly, 

 the margins considerably elevated; mandibles half as long as the body, stout, 

 with the apex bifurcate, a stout elongate acute tooth in the middle within, 

 and several obtuse smaller ones ; thorax short, punctulated, the sides angu- 

 lated and deflexed ; elytra with the sides a little dilated, thickly and finely 

 punctulated. Female much less, with the mandibles not larger than the 

 head, the apex acuminated, simple; head much less than the thorax, 

 coarsely and deeply punctured ; thorax finely punctured ; tibiae short, stout, 

 anterior compressed. 



Var. £. Steph. Catal. 1. c. — Much less than var. «., with the mandibles bifurcate 



