of nondescript Lucanoid Coleoptera, 8fc. 343 
Westwood and Count Mniszecli, considerable additional 
material, enabling me to arrive at this conclusion, has been 
available to me. 
The species composing the genus Nigidius may be sec- 
tionized thus : — 
A. Mandibles robust, with a recurved process at the base in both sexes, 
less produced in the females. 
a. Prothorax rugose, punctate with a central fovea, anterior angles 
more or less emarginate. N. grandis: N. Delegorgnei: N, 
au7'iculatus: iV. cribricollis. 
• Anterior angles of prothorax non-emarginate. N. Buialus: 
N. cornutus: JY. distinctus: N. ohesns. 
b. Prothorax smooth, non-foveate; anterior angles of prothorax 
produced, non-emarginate. N. Icevicollis: N. formosanus. 
B. Mandibles $ slender, evidently recurved at the apex, with a nodose 
tubercle at the base; $ mandibles less recurved and simijle. Pro- 
thorax smooth, non-foveate. N. Madagascariensis. 
C. Mandibles simple. Prothorax smooth, with a central fovea. N, Parryi: 
2V. trilobatus. 
Figulus suhlcBvis, Palis, de Beauv. (Lucanus), Ins. Afric. 
et Anier. i. 3. 
sublcBviSy Westw. Ent. Mag. v. p. 262. 
„ Burm. Handb. der Ent. p. 436. 
antlir acinus, Klug, Ins. Madg. 85. 
ebenus, Westw. loc. cit. 
nigrita, Westw. loc. cit. 
monilifer, Parry, Proc. Ent. Soc. 1862, p. 113. 
Having recently had the opportunity of examining 
numerous specimens of the several insects alluded to above, 
I have arrived at the conclusion that Dr. Burmeister (loc. 
cit.) is fully justified in uniting them as one species. With 
reference to the character specifically assigned, to the 
number of striae exhibited on the elytra, this character is 
found, as already alluded to by Dr. Burmeister, to be most 
capricious: the stride, or their rudiments, varying fi-om 
1 to 6. 
In the var. F. nigrita, Westw., exhibiting a somewhat 
small development of this species, the punctuation on the 
sides of the prothorax is somewhat stronger, but in other 
respects corresponds with a specimen in my collection of 
F. anthracinus, Klug. 
Figulus trilobus, Westw. Ent. Mag. v. 263. 
Hah. — N. Hollandia. 
Figulus trilobus may, I think, with great propriety be 
removed to the genus Nigidius, to which it appears to me 
