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longer than the first; third sub-equal to the first. Flagellum equal to the 
peduncle and consisting of about twelve segments. 
First three segments of the antennae short ; fourth as long as the three 
preceding; fifth as long as the second, third and fourth together ; flagellum 
long, reaching back three-fourths the length of the thorax, and consisting of 
about seventy-five segments. 
Right mandible with a single dentigerous lamella furnished with four 
obtuse teeth. Left mandible with two dentigerous lamellae, each with four 
obtuse teeth Palpus consisting of three segments; the first clavate; the 
second widest in the middle, its inner margin being straight and its outer 
formed by two straight lines meeting at an obtuse angle at the middle of 
the segment ; last segment falcate, furnished with numerous plumose hairs 
along its outer concave margin. 
Palpus of maxilliped with five segments. The first very short. The 
second three times as long as the first and rather broader than long, with 
the inner margin straight and the outer curved. Third segment short, 
broadest just above the proximal articulation, becoming narrower distally. 
Fourth segment clavate and bent inward at the base. Last segment short 
and only half as wide as the preceding. All the segments provided with 
scattered hairs along their outer margin and crowded with similar hairs 
along the inner margin. 
Propodus of the first pair of legs in the male ovate, nearly two-thirds 
as wide as long ; the palmar margin slightly convex, armed with a stout 
conical tooth in the middle, and at the posterior angle with another short ob- 
tuse one, surmounting a rough process of the body of the propodus. There 
are thus really two stout teeth on this margin. Dactylus with its claw 
reaching beyond the palmar margin, curved strongly, and armed with about 
fifteen teeth appressed towards the tip. 
In the female the first propodus is more slender, being one-half as wide 
as long. Palmar margin nearly straight and armed with several slender 
spines, and near the posterior angle with one moderately strong acute tooth. 
Dactylus long, curved, and armed with about eight teeth longer than those 
of the male. Dactylus terminating in a claw, which extends beyond the 
palmar margin. 
Anterior genital appendages of the male consisting each of two seg 
ments, the first three-fourths the length of the second, sub-quadrate, with 
four curved spines along the inner margin ; the second segment ovate, with 
an obliquely truncated extremity, which, as well as the adjacent parts of 
the inner and outer margins, is sparsely cilated. Posterior genital ap- 
pendages consisting each of a peduncle and two rami. The peduncle about 
as broad as long, outer margin straight, inner margin approaching the 
outer distally by a broad curve. Inner ramus navicular, notched at the 
distal extremity. Outer ramus bi-artic.ulate ; first segment triangular ; sec- 
ond linguiform, twice as long as broad, with the outer margin and the lower 
portion of the inner margin furnished with long plumose hairs. Caudal 
stylets of the male as long as the abdomen ; the peduncle a little less than 
two-thirds as wide as long, expanding distally, where it is excavated for the 
insertion of the rami. The rami are ovate, moderately acute, width about 
one-third of the length ; the outer ramus about two-thirds as long as the 
