iç)i3-] S. Kemp : Crustacea Stomatopoda of the Indo-Paciflc Region. 139 



Pocock observes that 0. carinifer may possibly prove to be a young example of 

 0. cultrifer, but this, I believe, is improbable. 



The single specimen, a male, 24 mm. in length, was caught in 24 fathoms on the 

 Holothuria Bank, China Seas. 



4, Odontodactylus elegans (Miers). 



1884. Gonodactylus elegans, Miers, Voy. H.M.S. ' Alert,' p. 566, pi. Hi, figs. B, b. 

 1894. Odontodactylus elegans, Bigelow, Proc. U.S. Nat. Mus., XVII, p. 496. 

 Odontodactylus elegans may be readily separated from all other species of the genus 

 by the sculpture of the sixth abdominal somite and telson. 



1. The rostrum is transverse, subtriangular, with its anterior margin regularly 



arcuated. 



2. According to the figure the breadth of the cornea is about one-third the 



median length of the carapace and the ophthalmic somite, as in 0. scyllarus, 

 is entirely concealed in dorsal view by the rostrum. 



3. The raptorial dactylus is only feebly dilated at the base and bears two teeth 



on its inner margin. 



4. On the third, fourth and fifth abdominal somites there are five small pits. 



5 . On the posterior margin of the sixth abdominal somite there are four spines ; 



the longitudinal carinae found in other species of the genus are absent. 



6. Except for a single median keel the dorsal surface of the telson is smooth and 



without carinae. There are about twenty-six minute submedian spinules, 

 and, on each side, two intermediate denticles and one lateral. 



I have seen no specimens of this species. The two individuals on which Miers 

 based his description were found in 13-20 fathoms and 24 fathoms at Providence I., S. 

 of the Seychelles. The largest example is only 23 mm. in length and is almost certain- 

 ly immature. 



5. Odontodactylus japonicus (De Haan). 



1844.? ' Gonodactylus japonicus, De Haan, in Siebold's Fauna Japonica, Crust., atlas, pi. li, fig. 7. 

 1845. Gonodactylus edwardsii, Berthold, Abhandl. kön. Ges. wiss. Gottingen, III, p. 30, pl.iii, fig. 6. 

 1849. Gonodactylus japonicus, De Haan, in Siebold's Fauna Japonica, Crust., Text, p. 225. 

 1880. Gonodactylus japonicus, Miers, Ann. Mag. Nat. Hist. (5), V, p. 116. 

 1894. Odontodactylus japonicus, Bigelow, Proc. U.S. Nat. Mus. XVII, p. 496. 

 1907. Odontodactylus japonicus, Borradaile, Trans. Linn. Soc, Zool. (2), XII, p. 212. 

 1910. Odontodactylus japonicus, Fukuda, Annot. Zool. Japon., VII, p. 145. 



1910. Gonodactylus edwardsii, Balss. Abb. matb.-phys. Klasse k. bayer. Akad. Wiss., Suppl. Bd., II. 

 Abh. 2, p. 5. 



The principal characters of this species are as follows : — 



The rostrum is subtriangular, about one and a half times as broad as long ; the 

 lateral margins are sinuous, and the apex, which is bluntly pointed, is very strongly de- 

 flexed . The eyestalks are short and the greatest breadth of the cornea is contained about 



1 See footnote p. 66. 



