iç)i3-] S. Kemp: Crustacea Stomatopoda of the Indo-Pacific Region. 179 



are also sometimes found on the last two thoracic, and on the fourth and fifth abdominal 

 somites. The marbling is on the whole very uniform in all the fresh specimens ex- 

 amined, but the distribution of the various patches of pigment is too complicated to 

 admit of description. In some specimens the general tone of the colouring tends to a 

 dull purple on the sixth somite and telson. The merus of the raptorial claw may have 

 a vertical crimson streak near its distal end and the anterior parts of the propodus and 

 swollen base of the dactylus are always white. The ventral surface is pale throughout 

 except that the posterior half of the telson is suffused with brown. 



There are in the Indian Museum specimens of Gonodactylus pulchellus, registered as 

 follows : — 



7462^6 N> Cheval p aal . 5 Ceylon. T. Southwell. 2 j , 2 9 , 37-43 mm. 



^ Pearl Banks, Ceylon (from Spongodes). T. Southwell. 3 d , 2 9 , 26-37 mm - 



— Persian Gulf. F. H. Townsend. 1 9 , 25 mm. 



~ Portuguese B. Africa. 1 J- J. Simpson. 19,9 mm. 



The species has been previously reported from Ceylon (Miers, Tattersall), Aden 

 (Nobili) and Dar-es-Salaam (Ortmann). It is probable, too, that the examples which 

 Henderson has recorded from Ceylon under the name of Protosquilla trispinosa are to be 

 referred to this species for there is reason to believe that G. trispinosus does not extend 

 as far west as India. 



13. Gonodactylus nefandus, Kemp. 

 Plate X, figs. 119, 120. 

 1911. Gonodactylus nefandus, Kemp, Rec. Ind. Mus., VT, p. 93. 

 This species is very closely allied to the preceding, but may be separated from it 

 without difficulty by the form of the rostrum, by the shape of the dorsal processes of the 

 ophthalmic somite, and by the shallow incisions separating the distal lobes of the telson. 

 The distinctions between the two species are as follows :— 



1. The antero-lateral angles of the carapace are rectangular and slightly rounded, 



not subacute, and the anterior margin on either side of the rostral base is 

 straight. 



2. The lateral spines of the rostrum are acute but very broad, forming a striking 



contrast with the very slender median spine ; the undivided basal part is much 

 longer than in G. pulchellus, its length being equal to that of the median spine. 



3. The antero-lateral angles of the plate forming the dorsal process of the ophthal- 



' mic somite are rectangular and do not project outwards as in the preceding 

 species. The eyes, moreover, are noticeably stouter and their length, in full- 

 grown specimens, is considerably more than one- third the median length of 

 the carapace. 



4. The base of the raptorial claw is less strongly swollen and the distal part is 



rather stouter and a little less curved. 



1 I am indebted to Mr. Patience for this specimen. 



