of Lucanoid Coleoptera. 53 
collections possessing long series of the various species of Agus 
from Java, but I have never yet detected Agus chelifer of M‘Leay 
as coming from that island. 
‘cus tunatus, Weber, Obs. Ent. i. 83, 1. (Luc.), Sumatra. 
Fab. Syst. El. ii. 252, 19. Sumatra. 
Burm. Handb, der Ent. v. 400. Sumatra and 
Java. 
As regards the descriptions of Weber and Fabricius of this 
insect, their extreme conciseness precludes the possibility of re- 
cognizing with any certainty the species alluded to, the habitat 
Sumatra being given by both authors; Dr. Burmeister, 1. ¢., 
records the species as distinct, from Java as well as from Sumatra, 
placing it next acuminatus of Fabricius, which belongs to that sec- 
tion of A’ gus having the head in front (in fully developed males) 
armed with a tubercle; according to Dr. Burmeister’s description, 
this character does not exist, and the insect in question must be 
considered as an undeveloped male, but whether to be referred to 
Agus acuminatus of Fabricius or to be considered as a distinct 
species is, I think, somewhat problematical. The extraordinary 
variation of character exhibited in a series of specimens of the 
same species in this genus renders it most perplexing to recognize 
with any certitude their identity from description only. 
ZEcus Kanpiensts, Hope, Cat. p. 6. 
The type specimen in the Hopeian Collection (% var. minor) is 
referred by Mr. Hope in his Catalogue as a variety of 4. ctca- 
tricosus, Wiedemann. (‘The insect in Mr. Hope’s Collection under 
the name of cicatricosus, Wiedemann, appears to be only the 
var. minor of acuminatus, Fabricius.) Having examined a nu- 
merous series of the various developments of this insect from 
Ceylon, as well as others closely allied to it from the Philippines 
and Borneo, I find so much affinity existing in general character 
with such a perplexing variability of sculpture, that it is almost 
impossible to arrive at any definite conclusion as to whether the 
specimens from Ceylon, Borneo and the Philippines are to be 
considered as geographical varieties of 4g. acuminatus of Fa- 
bricius, or to be regarded as distinct to be united under the name 
of Kandiensis, There is certainly one character to be remarked 
in the numerous specimens examined, viz., that the interior tooth 
of the mandibles (which appears to exist in all fully developed 
males of this section of the genus) is placed slightly above the 
centre and not near the base as in 4g. acuminatus ; in this respect 
