1913J S.Kemp: Crustacea Stomatopoda of the Indo-Pacific Region. 185 



teeth in place of three on the distal margin of the telson, and by the numerous spinules 

 on the telson and last abdominal somite. 



Schenkel (1902, p. 581) gives an account of the colouration. 



I have seen no examples of Gonodactylus stoliurus. It has been recorded from 

 Amboina (Müller, Ortmann, Zehntner and de Man) and from Makassar (Schenkel). 

 Pocock (1893, p. 476) notes, on Hansen's authority, that the specimens from Sharks 

 Bay, W. Australia, which Miers referred to G. trispinosus, are in reality examples of 

 this species, and it is clear that the individual from Amboina, which Miers subsequently 

 recorded under the same name (1880 (b), p. 640) also belongs to G. stoliurus. The 

 largest known specimen is a male 61 mm. in length (Schenkel). 



19. Gonodactylus ectypus (Müller). 



1880. Gonodactylus folinii, Miers, Ann. Mag. Nat. Hist. (5), V, p. 123 (fide Hansen, 1895, p. 90). 

 1886. Protosquilla ectypus, Müller, Verhandl. naturf. Ges. Basel, VIII, p. 476, pi. iv, fig. 1. 



Gonodactylus ectypus, along with the succeeding species, G. glyptocercus , may be 

 distinguished from all the preceding forms by the elongate shape of the two submedian 

 bosses of the telson which extend throughout the whole length of the segment and ter- 

 minate in a tooth on the distal margin. 



In G. ectypus the antero-lateral angles of the carapace are subacute, and the median 

 of the three spines on the rostrum reaches (according to Müller' s figure) to about the 

 middle of the eyes. 



The first four abdominal segments are smooth dorsally, but on the sides of the 

 fifth there are three pairs of oblique furrows which are posteriorly convergent. The 

 sixth somite bears six dorsal tubercles, the outermost of which are flattened and thorny 

 while the other four are rounded and convex. 



The telson is a little longer than wide. The median of the three dorsal bosses is 

 oval and smooth and is produced to a posterior point, while those of the lateral pair 

 are also smooth, and in the posterior half of the carapace are regularly narrowed to a 

 sharp tooth-like apex which extends beyond the distal margin. On either side of these 

 eminences there are two ridges running parallel to the external margin, both of which 

 terminate distally in teeth. The outer of these is better* developed than the inner. 

 In the middle of the distal margin two broadly-rounded submedian lobes are visible, 

 separated by an incision that seems to be rather wider than in the preceding species ; 

 on either side are three teeth forming the terminations of the submedian bosses and 

 of the lateral carinae already mentioned. The spinules usually found on the distal 

 margin appear to be missing. 



The outer spine of the ventral process of the uropod is much longer and broader 

 than the inner. 



Müller notes that large examples are dark brown in colour, while younger individuals 

 are light yellowish grey with brown speckles. 



There are no examples of Gonodactylus ectypus in the Indian Museum. Müller 

 described the species from six specimens, the largest 3 cms. in length, from Trincomali 

 Bay, Ceylon, and the only other recorded individual was found at Mauritius (Miers, 

 sub G. folinii, fide Hansen). 



