308 Prof. Westwood on 
Cladognathus rudis, Parry, loc. cit., p. 35. 
Dorcus rudis, Parry, Trans. Ent. Soc. 1870, p. 112. 
The original female type of this species is here more 
carefully re-figured, in order to afford comparison with 
the male Doreus ratiocinativus (Plate VIII. fig. 2) 
which Major Parry is inclined to regard as its genuine 
male. The precise habitat of this female specimen is, 
unfortunately, not known, and it is from analogy only 
that Major Parry has been led to the supposition of its 
being the female of the Himalayan insect. Should Major 
Parry’s suggestion that Doreus derelictus is the female of 
Rheetus Westwoodii prove to be correct, we shall, I think, 
be scarcely warranted in adopting his view as to the 
sexual relationship of the two former insects, since the 
great difference between the two females far outweighs 
the close affinity existing between the two males. 
Thus, although the structure of the mouth organs, 
especially the hooked inner lobe of the maxilla, mentum, 
and labium, with its palpi, are quite alike in the two 
females; the mandibles of D. derelictus are straighter, 
and curved, with two teeth on the inner edge; the head 
is bicornute, and but slightly punctured, the prothorax 
being almost impunctate, with the lateral margins regu- 
larly rounded; the elytra also impunctate, except at the 
sides ; the fore tibiee very slender, and with about seven 
very small denticulations on the outer margin, the middle 
tibie with a single spine in the middle, and the hind 
tibia unarmed in the middle; differmg in all these 
respects from D. rudis, the male of which will, no doubt, 
prove to be avery distinct creature from the genuine 
male of Dorcus derelictus. 
DoRcUSs SUTURALIS, 1. sp. 
(Plate VIII. fig. 5.) 
Obscure niger, elytris subopacis, regione scutellari et 
suturali glabrata, capite-transverso, labro brevissimo, 
transverso, antice emarginato ; mandibulis capite duplo 
longioribus, falcatis ; dente crasso submedio antice parum 
porrecto armatis, mento lato, cicatricoso. 
Long. corp. lin. 165 ; mandibul. lin. 5. 
Hab.—Pungi, Himalaya. In Mus. Parry. 
