80 LUCANID^. 



males entirely inapplicabk; to tlie females. A more natural 

 grouping is in my opinion to be ol)tained by employing tlie 

 more constant cliaracters of the female sex. 



Tlie study of such larvae as are known has served to confirm 

 the view I have exj)ressed. Mr. J. C. Gardner (in ' Indian 

 Forest Records,' vol. i, 1935, p. 7) writes — " The few identified 

 larva) belong to the genera Dorcus, Hemisodorciis , and Prosopo- 

 ccelus ; these, with an unknown species of Earytrachdus, 

 miglit all belong to one genus." 



Key to the Specitfi of Dor can (males). 



1 (9(5) Lateral margin of tho head without 



a sharp angle before the eye. 



2 (83) Side of the head without a distinct 



post-ocular process. 



3 (72) Pronotum narrower at the base than 



the elytra. 



4 (29) Head very short ; eyes near the 



front margin of pronotum. 



5 (28) Lateral margins of the pronotum not 



pectinate. 

 (5 (25) Elytra uniformly coloured. 



7 (16) Head and pronotum smooth or very 



finely granular. 



8 (11) Shoulders of the elytra sharply 



angular. 



9 (10) Hind tibia bearing a lateral spine. . . antaiu-s Hope, p. 80. 



10 (9) Hind tibia without a lateral spine. . curviden/i H.ope, p. ^H. 



11 (8) Shoulders of the elytra not sharp. 



12 (13) Elytra sliindng derelictus Parry, p. 91. 



13 (12) Elytra dull. [p. 92. 



14 (15) Lateral angle of the pronotum blunt. opacij)ennis Zang, 



15 (14) Lateral angle of the pronotum [p. U'.i. 



acute ratiocinulivus Westw., 



IG (7) Head and pronotum rugose or 



strongly punctured. 

 17 (20) Shoulders of the elytra rounded. 

 IfS (19) Basal part of the elytra bearing con- |p. 91. 



tinuous rows of setae vvltUiniwi Thorns., 



19 (18) Basal part of the elytra bearing 



interrupted rows of setae ursulun Arrow, p. 95. 



20 (17) Shoulders of tho elytra sharply 



angvdar. 



21 (22) Pronotum without sharp lateral [p. 9(j. 



angle cylindricus Thoms., 



22 (21) Pronotum with sharp lateral angle. [p. 98. 



23 (24) Klytra moderately long iinniundus Arrow, 



24 (215) Elj'tra very short and broad ruyonus Boil., p. 99. 



25 ((3) Elytra very glossy, decorated with 



pale markmgs. 



20 (27) Pronotiun spotted, its sides rounded [p. loO. 



in front fidvonotatus Parry, 



27 (20) I'roMotum not spotted, its sides not [p. 101. 



round(>d in front bisignatus Parry, 



28 (5) Lateral margins of the pronotum 



pectinate boUeaui Did., p. 103. 



