458 Mr. R. I. Pocock on the 
of a greater thickness of the anal legs in the former; but 
this seems to be a feature subject to variation. In well- 
preserved examples the colour of this species is much like 
that of C. aurantipes, the anterior and posterior extremities 
being blood-red, the antenne bluish, and the body greenish 
with darker bands. No trace of this coloration is observable 
in many dried or alcohol-preserved specimens. 
Cormocephalus esulcatus, sp. n. 
Closely related to C. Westwoodit, but differing in a cha- 
racter which appears to be constant, namely, the entire 
absence of a median sulcus on the anal tergite; this plate 
also is not so wide and transversely oblong as in that species, 
being distinctly narrower posteriorly than across the middle, 
with its sides convex; the anal legs, too, are much weaker 
than in the adults of C. Westwoodi and the young of corre- 
sponding size. ‘The prevailing colour is greenish or olive- 
brown, with bluish antenne and greenish legs. 
Length up to 56 millim.; length of head 3, of antenna 8, 
of anal leg 8:5. 
Loc. Fern ‘Tree Gully in Victoria (Prof. Baldwin Spencer). 
It is interesting to observe that both this species and 
C. Westwoodii are found in Fern Tree Gully, where the two 
were taken together by Prof. Baldwin Spencer. The 
specimens of Westwoodit may be immediately recognized by 
their coloration, the tergites being paler, more distinctly 
banded, and the head and anal legs redder than in those of 
C. esulcatus. 
Genus OTosTIGMUS, Porat. 
Otostigmus tuberculatus (Kohl.). 
Branchiotrema tuberculatum, Kohlrausch, Journ. Mus. Godeff. 1878, 
pt. 14, p. 71, pl. vi. fig. 4 (1878) ; id. Arch. Naturg. xlvii. p. 74, pl. v. 
fic. 11 (1881). 
Otostigma tuberculatum, Haase, Abh. Mus. Dresden, no. 5, p. 76, pl. iv. 
fig. 79 (1887). 
Slender in front, expanded behind. Olive-green in colour, 
with the terga laterally ferruginous; legs ferruginous, the 
posterior pairs banded with green. Antenne 18-jointed. 
Precoxal plates of toxicognaths with 8+3 teeth. Terga 
from the fifth sulcate, from the ninth marginate; subrugulose, 
the last rough. Sterna shining, from the ninth tubercular ; 
the last smooth. Anal pleure long, acute, apically trispinose, 
and with one upper and two lateral large spines. Legs of 
twentieth pair with protarsal spine, of twenty-first pair 
