MUSEUM OF COMPARATIVE ZOOLOGY. 245 



Oculiferous segment very short, anterior part nearly triangular. Oculiferous 

 tubercle 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, A'ery slender, rounded at the end. 

 Basal joints nearly naked ; outer joints •with rather sj^arse, 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 verj' 

 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 ^\'ithout spines along the 

 lower side. 



The surface is everywhere finely tuhercvJose. Scattered at considerable but 

 pretty regular intervals over the legs are short, stout, appressed hairs which 

 show a distinctly linear arrangement. At the 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 5 cm. 



" rostrum 3 " 



Diameter of rostrum at base 2. 5 mm. 



" " at widest part 4.7 " 



at tip 3.5 " 



Length of palpi 5.7 cm. 



" accessory legs 10.3 " 



" ambulatory legs 27.2 " 



Extent 55 " 



