154 LUCANID^. 



cheeks are .stroJigly aiul rather sharj)ly ])i()(liued V)ehiiul the 

 eyes. The jrronotiDii is short and broacl, tinely and densely 

 granuhir, with the front angles very bhmtly produeed, the sides 

 straight and ])arallel in the middle, rounded in front and behind, 

 without lateral or basal angle. The clytrd are very densely 

 ])unetured, except at the sutural margins, which are smooth and 

 shining. The head is granular and opaque beneath, the 

 meUistermim and abdomen are smooth and shining, the last 

 sternite strongly punctured. The legs are fairly slender, the 

 front tibia with narrt)w terminal fork and almost without 

 lateral teeth. 



Variation of the male. .Small s])ecimens have the head rather 

 strongly punctured and witliout lateral carinas, the mandibles 

 entirely serrate at the inner edge. Those more advanced are 

 without the punctures but show an incipient oblique ridge on 

 each side of the head. The basal part of the mandible is 

 laterally compressed, the serrate inner edge is at the upper level 

 and there is a single basal tooth at a lower level. In large 

 specimens tlie lateral ridges of the head almost unite behind 

 into a continuous curved carina, the serrate edge of the man- 

 dible is farther removed from the base and the lower tooth is 

 ratlier long and truncate. In tlie largest specimen I have 

 seen, the lower tooth is jilacednear the middle of the mandible 

 and the serrate upper edge is short and occuiDies only the last 

 third of the total length. 



J. Length (with mandibles), lG-30 mm. ; (without man- 

 dibles) 14-22 nnn. : breadth, d-d' 5 inm. 



$. Length, IS mm. ; breadth, S mm. 



Andaman I.s. : {Roepstorff, Capt. Wirnberley, E. T. Atkinso7i). 

 NicoBAR Is. : {Roepstorff). 



Type in the Kene Oberthiir collection. 



79. Dorcus giraffa. (Plate XIV, figs. 1, 2, 4, 5.) 



Lucannn (jlraffa Oliv., Entom. i, 1, 1789, p. 21, pi. 5, fig. IG ; F. Eat. 



Syst. iv, 1794, p. 452. 

 Lucatw.s confucuis Hope,* Proc. Ent. Soc. Lond. 1842, p. 60 ; Hope 



& W(>stw., Cut. Luc. Col. 1845, p. 18. 

 Cladognathus boiivicri Did., Livie Jubilaire Boiivicr, 1836, p. 191 

 (Male phase). Cladognathus arrotvi Gravely, Records Ind. Mus. xi, 



1915, p. 416. 



Entirely black, smooth and shining, except upon the head, 

 and the pronotum in the male ; elongate and convex, with 

 slender legs. The three joints of the antennal club moderately 

 long and tlu> sev(>nth joint ])r()(luced into a slender ])rocess. 

 The eyes ]irominent and little divided by the canthus. The 

 front angles of tlie ])ronotum truncate. The ])i'osternum 

 compressed and sliarply angular behind, the mestasternum 

 densely granular and opaijue al the sides and the abdomen very 



