MUSEUM OF COMPARATIVE ZOOLOGY. 251 
Oculiferous segment swollen, of greater diameter than that of the body, nar- 
rowing slightly in front; it is nearly as long as the two following segments 
taken together. Its vertical diameter is much less in front than behind, the 
lower surface being oblique. Oculiferous tubercle extremely prominent, coni- 
cal, acute, placed at the extreme anterior end of the segment, almost directly 
above the attachment of the antennæ. Ocelli dark chestnut-brown, iridescent ; 
anterior pair three times as large as the posterior, lying at a much lower level. 
Rostrum considerably longer than the oculiferous segment, nearly cylindrical 
but slightly swollen near the middle and again near the tip. Abdomen slen- 
der, slightly clavate, about as long as the three posterior body-segments taken 
together. 
“ Antenne” (Fig. 18) with two slender equal basal joints which extend be- 
yond the rostrum ; they are separated by a delicate slightly marked articula- 
tion ; chel stout, swollen, very hairy ; claws very short, flattened, with thin 
overlapping cutting edges forming a scissors-like organ. 
Palpi (Fig. 17) represented by a pair of simple rounded knobs at the sides of 
the rostrum, They are articulated to the body, and seem to represent a single 
joint, 
Accessory legs (Fig. 17) stout and well developed in the male, small and 
weak in the female ; Ist joint (male) short, swollen, about equal to 3d ; 2d, 
4th, and 5th, nearly equal and about twice tho 3d; 6th, less than 5th, strongly 
curved, swollen at distal extremity ; 7th, still less, with a peculiar twist, so 
that the appendage cannot be straightened ; 8th and 9th, equal to 7th, or 
less; 10th, very small, rounded. Outer joints sparsely covered with simple 
hair-like spines, many of which are directed backward, especially at the distal 
extremity of the 6th joint, where they are very short and stout, and form an 
irregular circlet. 
Legs long, rather slender, three and a half times as long as the body (in- 
cluding rostrum and abdomen); Ist and 3d joints very short; 2d, much 
longer, clavate ; 4th, 5th, and 6th, very long and slender; 6th, longest and most 
slender ; 7th (tarsus), very short, nearly triangular, with a row of strong spines 
along the lower side ; 8th (propodus), gently curved, three and a half times 
the tarsus (longer margin) armed with an irregular series of strong, more or 
less appressed spines along the lower side (Fig. 16), which vary in arrangement, 
but are longer towards the proximal end ; dactylus a little more than one half 
the propodus, auxiliary claws one fourth the dactylus. 
The surface is everywhere finely tuberculose; the tuberculation is coarser on 
the accessory legs than elsewhere. The body is sparsely hairy, the rostrum is 
also hairy, and the abdomen still more so. The legs are rather conspicuously 
hairy, the hairs becoming stouter and more spine-like on the outer joints. 
Color, pale yellowish or straw-color. A narrow brown stripe, representing 
a thickening of the chitin, extends along each side of the legs. 
Near the middle of the fourth joint of each ambulatory leg on its anterior 
side, in the male, is a slight elevation, from which arises a short tubular organ, 
which is apparently the duct of a glandular organ within the joint. 
