38 Transactions.— Zoology. 
The cephalothorax is oval, convex, glossy black; constricted laterally 
forwards; medial fovea deep; the eaput is strongly convex, and its normal 
grooves well defined ; the profile line forms a double arch, the highest part 
being at the occiput; the fore-part of this area is prominent, projecting 
over the clypeus, whose height equals the depth of the ocular area. 
The four intermediate eyes form a trapezoid, whose length is greater than 
the interval between the fore-central eyes; the hind-centrals are about one- 
quarter of an eye’s breadth apart; the laterals are placed obliquely on 
strong tubercles, the space between them is about one-half their diameter. 
The eyes are moderately large and have a pearly lustre. 
The legs are moderately long and strong, 1, 2, 4, 9, the second pair 
nearly equals the first in length (9 mm.); they have a yellowish hue and 
well-defined brown annuli; the armature consists of strong hairs. 
The palpi are not very long, and are indistinctly annulated with brown 
and black tints. 
The falces are prominent, conical, and nearly vertical, glossy dark 
brown. 
The mazille are convex, and somewhat obliquely truncated, they are 
glossy dark brown; the labium has the same hue, is semicircular, 
pointed. 
The sternum is heart-shaped, dull brownish-black, stamped with the 
seven-lobed mark. The abdomen is a long oval, convex, and rises almost 
perpendicularly from the thoracic junction; posteriorly it terminates in 
three blunt transversely wrinkled protuberances, the central one is much 
the longest; it is of a very glossy dark green—in some examples nearly 
black hue, almost devoid of hairs, except on the tail-like extremity and 
lateral lobes which are a dull black, faintly streaked with yellowish-brown, 
furnished with short erect hairs; a broad irregular silver band with lake- 
coloured marks extends along the medial line to the base of the central 
protuberance, where it ends in a more or less defined silver crescent; the 
lateral margins are devoid of the longitudinal wrinkles, have a dull black 
hue, and are mottled and streaked with pale brownish-yellow; ventral 
surface dull black. The vulva consists of black oval protuberances, over 
which hangs a broad, curved, wrinkled, membraneous process, directed 
backwards. 
The male is much smaller than the female, being only 5 mm. in length. 
The cephalothoraz, which equals the abdomen in length, is a broad oval, dull 
brownish-black, finely rugulose. The leys are somewhat like those of the 
female in colour; the armature consists of strong spines and a few fine 
dark hairs. The palpi are short, the three first joints have a yellowish- 
brown colour; at the apex of the cubital joint there is a strong bristle ; the 
