154 LAMELLICORNES. EUCANIDJE. 



Fam. 33 Melolonthid^e. Ant. 9- or 10-jointed ; club elongate, with from 

 3 to 7 leaves : mand. stout, horny, concealed : maxilla short, with a horny 

 process within : labrum with the anterior edge exposed : legs rather long, 

 slender ; tibia not dilated, often dentate; claws mostly bifid or dentate. 



Fam. 34 Cetoniad^. Ant. 10-jointed, glabrous : mand, compressed, slender, 

 lanceolate : maxilla with a membranaceous process within : labrum. con- 

 cealed : scuiellum distinct: legs slender; tibia slender; claws simple, 

 acute. 



Fam. 27. LUCANID^ Leach. 



ecxxiv. Platycerus Ant. with club pectinated, 4-leaved : labium entire : 

 mand. of $ moderate, lunate : body flattened : legs shortish ; anter. tibia 

 irregularly serrated. 



ccxxv. Dorcas Ant. with club somewhat perfoliated, 4-leaved : labrum 

 distinct : mand. of $ moderate : labium bilobed : head broad, in ^ with 

 2 shining tubercles : body flattened : legs rather short ; anter. tibia narrow, 

 serrated ; tarsi short. 



ccxxvi. Lucanus Ant. with club 'pectinated, 4-leaved: labrum concealed : 

 mand. of 6* gigantic ; bent, irregularly dentate within and furcate at the 

 apex, glabrous ; of ^ moderate, acute at tip : labium bifid : body slightly 

 convex : head large ; sometimes margined : legs long ; anter. tibia dilated, 

 compressed in $, dentate; tarsi long. 



ccxxvii. Sinodendron Ant. short, with club pectinated, 3-leaved, com- 

 pressed : mand. very short, concealed beneath the clypeus : mentum small : 

 head and tho. in $ horned : body convex, cylindric ; legs short ; tibia 

 spinous ; tarsi short. 



224 Platycerus Geoffroy. 



1234 caraboides L. ii. 561. — Cur. vi. pi. 274. — Ste. M. iii. 164. — Above 

 blue, or greenish, shining ; minutely punctured ; beneath dull pitchy- 

 black, pubescent: elytra punctate-striate ; legs pitchy; antennas black; 

 palpi pitchy. (L. 6-7j 1. ) Bristol; Oxford; W. of England; and in 

 Scotland : 6. 



225 Dorcas MacLeay. 



1235 parallelipipedus L. ii. 561. — Don. win. pi. 164. — Ste. M. iii. 165. 

 ■ — Dull-black : $ finely punctured ; with mandibles as long as the head, 

 with an elevated tooth in the middle ; labrum broad truncate ; ^ rather 

 more glossy and roughly punctured ; mandibles short ; labrum small, 

 deeply notched; head with 2 shining tubercles. (L. 9-15 1.) In rotten 

 trees, especially ash ; common in the S. of England : 7-8. 



226 Lucanus of Authors. 



1236 Cervus L. ii. 559. — Ste. M. iii. 166. — Cur. xi. pi. 490 6* 5 lower 

 Jig. (uncol.) <j> . — Brown-black, thickly punctured; mandibles and 

 elytra chestnut brown. (L. S 1 in. 3 1. — 3 in. : £ 1 in. — 1 in. 8 1.) 



Var. Lu. grandis Haworth. — Head wider than the thorax, with a high 

 marginal ridge : mandibles very long, apex bifurcate, middle with a long 

 acute tooth and several blunt smaller ones within. (L. 6* 2 in. —3 in.) 



Var. Lu. dorcas Pz. F. Iviii. f. 11. — Head smaller than the thorax, without 

 elevated margins ; mandibles bifurcate at the tip, and irregularly crenu- 

 lated in the middle within. (L. $ 1 in. 3 — 2 in. 2 1.) Abundant in 

 Surrey ; Kent ; Essex j New Forest ; Devonshire : occasionally in Berks 

 and Suffolk ; 6-8. 



