MUSEUM OF COMPARATIVE ZOOLOGY. 245 
Oculiferous segment very short, anterior part nearly triangular. Oculiferous 
tuberele in the middle of the anterior part, large, smoothly rounded, or some- 
times terminating in a low conical tip, transverse diameter greatest; ocelli two, 
widely separated, without pigment, rudimentary. 
Palpi (Fig. 5) nearly twice the rostrum, attached at the sides of and a little 
below the latter. Two extremely short basal joints are followed by a long 
slender one, and this by a short quadrate one; 5th is seven eighths the 3d; 
6th, one fourth to one third the 5th; 7th, a little more than twice the 6th; 
8th, a little longer and much more slender than the 6th ; 9th, equal to the 8th, 
or a little less; 10th, about equal to the 9th, very slender, rounded at the end. 
Jasal joints nearly naked ; outer joints with rather sparse, stoutish, simple 
hairs, which are somewhat more numerous on the lower side. 
Accessory legs (Fig. 6) of great length, more than twice as long as the en- 
tire body (including rostrum and abdomen). The three basal joints are very 
short, the 5th about three times as long as broad, the 4th and 6th greatly 
elongated ; 6th longest, very slender, nearly straight; 7th to 10th, short, curved, 
bearing the peculiar spines characteristic of the appendage ; terminal joint 
claw-like and coalescent with the preceding. The five terminal joints can be 
folded tightly together and form an efficient prehensile organ. Terminal claw 
without spines, with a marked and peculiar curvature. Spines of the 7th to 10th 
joints arranged as in the last species, forming a crowded mass on the concave 
side of the joint. They are of a slender spatulate shape, those of the inner 
row larger and more or less truncate at the end; along their edges they are 
very finely serrate. 
Legs enormously long, five and a half times the body (including rostrum 
and abdomen). The three basal joints very short ; 4th, very long and slender 
(seven times the three basal ones taken together); 5th, exactly equal to the 4th; 
6th, three fourths the 5th ; 7th, about one eighth the 6th; 8th, a little more 
than one half the 7th ; 9th (dactylus), less than one half the 8th, very slightly 
curved, acute. Propodus and tarsus (Fig. 7) entirely without spines along the 
lower side. 
The surface is everywhere finely tuberculose. Scattered at considerable but 
pretty regular intervals over the legs are short, stout, appressed hairs which 
show a distinctly linear arrangement. At tho distal extremities of the joints 
they are more numerous, and form incomplete rings. 
Color clear straw-yellow. A narrow dark stripe runs along each side of the 
appendages, representing a thickening of the chitin. 
Length of body, inclusive of rostrum and abdomen . . . . . em. 
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