iç)i3- ] S. Kemp : Crustacea Stomatopoda of the Indo-Pacific Region. 169 



ground of a different nature to that in which G. chiragra flourishes. Although both 

 species occur together on the Ceylon pearl banks, G. glabrous is vastly in the majority. 



G. glabrous is distributed throughout the Indo-pacific region and has been recorded 

 from the following localities : Rotuma (Borradaile) ; Liu Kiu Is., Japan (Fukuda) ', 

 British New Guinea (Nobili) ; Sir C. Hardy's I., N.E. Australia (Henderson) ; Ternate 

 (de Man) ; Samboanga (Brooks) ; Sulu Sea (Henderson) ; Pulo Edam (de Man) ; 

 Ceylon, Tuticorin and Rameswaram (Henderson, Tattersall) ; Maldives and I^accadives 

 (Manchester) ; Persian Gulf (Nobili) ; Aden (Henderson) ; Red Sea (Nobili) ; Seychelles 

 (Jurich, Borradaile) ; Cargados Carajos (Borradaile) ; British East Africa (Borradaile) ; 

 Zanzibar (Lenz, etc) ; üar-es-Salaam (Ortmann). Müller' s record of G. graphurus from 

 Trincomali doubtless refers to this species. 



Steuer (191 1, p. 734) has examined specimens from Heller's collection which were 

 obtained at L,esina in the Adriatic. This is the only authentic record of any species 

 of Gonodactylus in the Mediterranean. 



5. Gonodactylus graphurus, Miers. 



1847. Gonodactylus graphurus, White, List Crust. Brit. Mus., p. 85 {sine desc). 



1875. Gonodactylus graphurus, Miers, Ann. Mag. Nat. Hist. (4), XVI, p. 344. 



1880. Gonodactylus graphurus, Miers, Ann. Mag. Nat. Hist. (5), V, pp. 120, 459, pi. iii, fig. g 



(partim). 



1882. Gonodactylus graphurus, Haswell, Cat. Australian Crust., p. 211. 



1884. Gonodactylus graphurus, Miers, Voy. H.M.S. ' Alert,' pp. 298, 566 [partim). 



1886. Gonodactylus graphurus, Brooks, Voy. H.M.S. ' Challenger,' XVI, Stomatop., p. 58, pi. xiv, 

 figs. 1, 4, 6 ; pi. xv, figs. 3, 8. 



1893. Gonodactylus graphurus, Pocock, Ann. Mag. Nat. Hist. (6), XI, p. 474. 



1894. Gonodactylus graphurus, Zehntner, Rev. Suisse Zool., II, p. 213. 

 1894. Gonodactylus graphurus, Bigelow, Proe. U.S. Nat. Mus., XVII, p. 493. 

 1894. Gonodactylus graphurus, Ortmann, Denk, med.-wiss. Ges. Jena, VIII, p. 60. 

 1901. Gonodactylus graphurus, Lenz, Zool. Jahrb. Syst., XIV, p. 478. 



1903. Gonodactylus chiragra var. graphurus, Lanchester, Faun, and Geog. Maldives and Laccadives, 

 I, p. 450. 

 ? 1905. Gonodactvlus graphurus, Nobili, Boll. Mus. Torino, XX, no. 506, p. 11. 



? 1905. Gonodactylus graphurus, Lenz, Abhandl. Senck. naturf. Ges. Frankfürt, XXVII, p. 387 

 (partim, fide Lenz, 1910). 

 1906. Gonodactylus graphurus, Nobili, Ann. Sei. Nat. Zool. (9), IV, p. 333. 

 1910. Gonodactylus graphurus, Lenz, in Voeltzkow's Reise in Ost-Afrika, II, p. 571. 

 Gonodactylus graphurus is closely allied to G. glabrous and may be separated from 

 G. chiragra by the same characters that have been given under that species. It may 

 be distinguished at a glance from G. glabrous (and from all the other species of the 

 same section as well) by the fine transverse and longitudinal grooves on the first five 

 abdominal somites. 



The most conspicuous of these grooves starts from the small pit mentioned in the 

 case of the preceding species and, after running backwards a short distance, curves 

 upwards, and is continued almost to the mid-dorsal line as a transverse groove in the 

 posterior third of each somite. The |_-shaped antero-lateral groove, found in 

 all the species of this group, is distinct and there is also on each somite an addi- 



