22 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 123 



Discussion. — The most distinctive feature of 0. cultrifer is the 

 relative size of the segments of the uropodal exopod; in no other 

 species of the genus is the distal segment longer than the proximal. 



The median carina of the telson is characteristically slender and 

 highly arched dorsally, and it is much higher in mature males than in 

 mature females. In females the telson width/median carina height 

 ratio ranges from 3.29 to 4.55, in males from 2.17 to 3.67. 



Pocock (1893) was the first to suggest that his 0. carinifer might be 

 the young stage of 0. cultrifer, and Hansen (1926) synonymized the 

 former with the latter. After examining the type of 0. carinifer, I 

 must agree with Hansen. In 1966 I pointed out that 0. ?nindanaoensis 

 Roxas and Estampador should be referred to 0. cultrifer. The type 

 of 0. mindanaoensis is a small female with a low median carina on the 

 telson; the description and figures agree with 0. cultrifer in all respects 

 but one: the distal segment of the uropodal exopod is shorter than 

 the proximal. The illustration is highly stylized so the size of the two 

 segments may not have been drawn correctly. 



0. cultrifer var. tridentata Serene, 1954, was also provisionally 

 synonymized with 0. cultrifer by me in 1966. I can find no characters 

 to distinguish the varietal form from 0. cultrifer sensu stricto; the variety 

 seems to have been recognized on the basis of a larger number of 

 teeth on the claw and a relatively lower median carina on the telson. 

 In my material the height of the median carina varies somewhat and 

 there may be three, four, or five teeth on the dactylus of the claw. 



Distribution. — 'Western Pacific Ocean, from Australia and New 

 Guinea northward to Japan, in shallow water. 



Odonodactylus brevirostris (Miers, 1884) 



Figures 6-8 

 Gonodactylus brevirostris Miers, 1884, p. 567, pi. 52 (fig. c)[Gonodactylus elegans in 



legend]. 

 Gonodactylus Havanensis Bigelow, 1893, p. 101 [June]. 

 Gonodactylus Hansenii Pocock, 1893, p. 477, pi. 20b (figs. 3-3b)[June]. 

 Odontodaclylus brevirostris. — Bigelow, 1894, p. 496 [key]. — Tattersall, 1906, p. 172, 



pi. 2 (figs. 16-18).— Borradaile, 1907, p. 212.— Kemp, 1913, p. 143.— Kemp 



and Chopra, 1921, p. 297 [listed].— Komai, 1938, p. 272, fig. 2.— Edmondson, 



1946, p. 243. — Manning, 1967, in press [summary of Atlantic records]. 

 Odontodaclylus havanensis. — Bigelow, 1894, p. 497, text-figs. 1-2, pi. 20. — Kemp, 



1913, p. 204 [listed]. 

 Odontodaclylus hanseni. — Bigelow, 1894, p. 496 [key]. — Kemp, 1913, p. 140. — 



Dawydoff, 1952, p. 146 [G. hansenii on p. 145].— Townsley, 1953, p. 421, 



figs. 18-19. 

 Odontodactylus laliroslris Borradaile, 1907, p. 212, pi. 22 (figs. 3, 3a). — Kemp, 



1913, p. 141. 

 Odontodactylus soulhwelli Kemp, 1911, p. 94; 1913, p. 142, pi. 9 (figs. 103-106).— 



Kemp and Chopra, 1921, p. 297 [listed]. 

 Odontodactylus hansenii. — Edmondson, 1921, p. 297, fig. If. — Bigelow, 1931, 



p. 147, fig. 2.— Edmondson, 1946, p. 243. 



