Ediuoudsou — Stoiuafopoda in the BisJiop Mitscinn 293 



structure, and to point out some ditTerences between the Tahiti 

 and tlic 1 lonohiki specimens witli respect to this organ, figures 

 of the endopocHtes bearing tlie accessory organs of individuals 

 from each locahty are introduced, figure i, c, representing a male 

 from Tahiti, and figure i, d. a male from Hc:>nolulu. 



It will be observed that the retinaculum ( nii ) in each speci- 

 men is prominent but less angular in the Tahiti specimen. In 

 each case the movable limb of the forceps ( //;/ ) is slightly 

 curved and well developed, while the fixed limb (// ) is much 

 smaller and terminates in a distinct hook. In the Tahiti speci- 

 mens a prominent ridge continues from the base of the movable 

 limb of the forceps diagonally to a point just distal of the hook 

 of the fixed limb then bends abruptly fusing with the small 

 inner lobe of the endopodite. In the Honolulu specimen this ridge 

 is onlv slightly developed and lacks the angular character. This 

 difiference is not one of maturit}' as the Honolulu specimen is 

 the larger, being 24.7 cm. in length. In each specimen a thin, 

 fleshy ridge extends diagonall\- across the small, inner lobe of 

 the endopodite. This ridge (unlabeled in the figures) is more 

 ]irominent in the examples from Tahiti. 



The careful examination of a larger series of perfect speci- 

 mens of this species from different regions would probablv re- 

 sult in the determination of distinct local varieties. 



The color of the Honolulu specimen, preserved in alcohol, 

 is much lighter in color than that of the Tahitian specimens. The 

 ground color of the dorsal surface of the former is pale yellow 

 with three bands of dark pigment extending transversely across 

 the carapace, and similar bands at the sutures of the segments 

 of the hind body. Large l:)lack spots mark the uropods. A dark 

 Y-shaped patch, having a large, black spot on either side of it, 

 occupies the posterior half of the medial region of the telson 

 with a large, black spot on either side of it. A broad, pale- 

 yellow stri))e marks the hind body in the mid-dorsal line as far 

 as the sixth abdominal segment. The terminal segments of the 

 raptorial limbs are marked with broad spots of dark brown. 



The specimens from Tahiti, which have been preserved in 

 formaldehyde for some time, are, in general, marked like the 



[15] 



