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183 
Prothorax widely declivious but not excavated in front; about 
one third from base with two strong curved spines or thin 
horns, at the outer base of each a large fovea shallowly 
connected with the small sublateral one; sides finely and 
hind ones with two wide carinae. Length 
unarmed, with 
sublateral foveae smaller and the median ones absent, and 
with a rather short (not the width of the head) transverse 
bisinuate carina about one-third from apex. 
Hab.—Western Australia: Geraldton (J. S. Clark). 
Type, I. 10660. 
Allied to frontale, and with the head of the male some- 
what similarly armed, but the spines of the prothorax are 
thinner and i : 
BOLBOCERAS TRIUNUM, n. $ 
Pl xxv., fig. 20; pl. xxvi., fig. 47. 
2 d. Pale castaneous, tips of some projections infuscated 
r black. Under-parts densely pilose. 
ostly flat, smooth near base, rather densely 
Head m 
chu elsewhere, front face of carina short, its middle 
wned wi i i 
ted; punctures crowded 
lse 
: dad ; € serra 
cm rds sides, irregular in front and sparse elsewhere. 
