175 
horns of the second (male) genital segment microscopically 
tubercular, black (pi. xxvii., fig, 9). Antennae : first joint three 
times the length of the second, third joint about two thirds the 
length of the second, fourth joint scarcely the length of the 
second, stouter : second intermediate jointlet extremely minute 
(pi. xxvii., fig. 8). Front tarsi : second joint twice and a half 
the length of the first (pi xxvii., fig. 6). Middle tarsi: first 
joint more than three times the length of the second. 
Male . Length 3*81, breadth 1 *77 j intermediate femora 1*56, 
hind femora 4*06 mm. 
Female. Length 4*31, breadth 2* 5 4 ; intermediate femora 5*o 8, 
hind femora 4*81 mm. 
Larva. About the same size as adult male but broader ; the 
legs and antenna; stouter, and the hind femora shorter, similarly 
colored to those of the adult. In spirit specimens the dorsal 
integuments are sordid ochreous or yellowish-brown, with the 
chitenous plates glaucous (pi. xxvii., tig. 2) ; in dried specimens 
the integuments are deep brown or black, with the plates of a 
leaden and lighter hue (pi. xxvii., fig. 1). Abdominal segments 
nine, the two last entirely chitenous. Above, the first genital 
segment is narrow, and is the last segment bearing the chitenous 
dorsal plates, beneath, it is half the length of the whole of the 
preceding abdominal segments taken together, and like them of a 
pallid hue ; beneath, the second segment is nearly twice the 
length of the first, somewhat wider than long, with the posterior 
half blackish ; third segment small, blackish ; the last two 
segments black above ; these segments do not appear to exhibit 
any sexual characteristics. 
Length 3*81, breadth 2 ; intermediate femora, 4*56, hind femora 
3*55 mm. 
Hob. Tarban Creek, Parramatta River, Balls’ Head Lay, and 
Middle Harbour, Port Jackson, N.S.W, (Whitelegge and Skuse). 
April and May. 
Male. Head moderately convex in middle of vertex, somewhat 
depressed in front. Antenna* three-fourths the length of the 
body, slender ; first joint longer than the remaining three taken 
together ; second, one-third the length of the first ; third, two- 
thirds the length of the second, thicker ; fourth, about the length 
of the second, incrassate, attenuate at the tip ; several small 
spines at the apex above of first joint, and one or two at the 
apices of the remaining joints. 
Pronotum rather more than twice and a half broader than long, 
flattened, with an anterior transverse forea laterally. Mesonotum 
widest at the middle, with a very indistinct longitudinal impressed 
median line. 
Front legs : femora stout, narrower at the apex ; tibi® four- 
fifths the length of the femora ; tarsi (pi. xxvii., fig. 6) five-eighths 
