iç)I3-] S. Kkmp: Crustacea Stomatopoda of the Indo-Pacific Region. 165 



from the summits of the median telson ridges, but Nobili has noted that they may 

 cover the entire surface as is usually the case with the var. spinosus. It will be noticed 

 that the median ridge of the telson is sometimes very much broader than the others, 

 and this is the case with the type specimen figured by Henderson. 



Spirit specimens do not show any very characteristic colouring. Most of the 

 examples are yellowish brown with a speckling of black chromatophores, which tend to 

 form a transverse band in the posterior third of the carapace, lateral patches on the 

 sixth thoracic somite, and a pair of ill-defined spots in the middle of the sixth thoracic 

 and first abdominal somites. 



G. demani is a small species and does not seem to exceed 40 mm. in length. The 

 specimens in the Indian Museum are not numerous: — 



: ™ Bombay. F. W. Townsend. 1 d , 28 mm. 



~ Persian Gulf. F. W. Townsend. 2 d 4 ? , I9"37 mm - 



^ Henjam Is., Persian Gulf. W. T. Blanford. 19,28 mm. 



3193 ~) 

 II) J 



hi. Karachi Museum. 2 d , 27, 30 mm. 



' Arabian Sea.' Karachi Museum. 1 S , 29 mm. 



Ibo Archipelago, Portuguese E. Africa. 1 J. F. Simpson. 1 d 2 9 , 27-39 mm. 



An additional specimen lent by the Bombay Natural History Society has also been 

 examined : — ■ 



Persian Gulf, Pearl Banks, 5-7 fms. 1 9 , 22 mm. 



Gonodactylus demani has been recorded from Pulo Edam on the Java Coast (de 

 Man), from Rameswaram in the G. of Manaar (Henderson) from the Persian Gulf and 

 Red Sea (Nobili) and from Zanzibar (I,enz, Borradaile). 



var. spinosus, Bigelow. 

 Plate IX, fig. 112. 



1893. Gonodactylus spinosus, Bigelow, John Hopkins Univ. Circ, no. 106, p. 101. 



1894. Gonodactylus spinosus, Bigelow, Proc. U.S. Nat. Mus., XVII, p. 493. 



1903. Gonodactylus chiragra var. spinosus, Manchester, Faun, and Geog. Maldives and Laccadives, 

 I., p. 454, pi. xxiuVfig. 14. 



1906. Gonodactylus spinosus, Nobili, Ann. Sei. Nat. Zool. (9). IV, p. 330. 



1907. Gonodactylus spinosus, Borradaile, Trans. Linn. Soc. Zool. (2), XII, pp. 210, 212. 



The telson is as long as broad , and the incision between the submedian marginal 

 spines is slightly deeper than in typical G. demani. The intermediate teeth of the telson 

 edge are very small, and the laterals are minute or wholly absent. The dorsal surface 

 is closely covered with small spinules, but in some cases the summit of the median ridge 

 is bare. 



The claims of this form to varietal recognition are very slight and appear to rest 

 almost solely on the greater length of the telson, and the reduced size of the intermediate 



1 I am indebted to Mr. Tatience for the opportunity of examining these specimens. 



