igi3-] S. Kemp: Crustacea Stomatopoda of the Indo-Pacific Region. lyi 



Zanzibar made in 1901, and remarks that the specimens collected by MM. Bonnier and 

 Ferez in the Persian Gulf — evidently those that he recorded as G. graphurus in April, 

 1906 — are also examples of G. glabrous. It is therefore apparent that little confidence 

 can be placed in Nobili's other record from Zanzibar made in 1905. 



But, in addition to Nobili, I,enz on two occasions notes the occurrence of G. gra- 

 phurus at Zanzibar. In his latest paper (1910), he refers some of the specimens recorded 

 in his previous account to G. glabrous, but it seems hardly possible that there can be 

 any mistake regarding the remainder, for the author notes the presence of grooves on 

 the abdominal somites. 



The type specimens of G. graphurus were obtained at Samoa (Miers) and since 

 1886, when the features of G. glabrous were first recognized, the following records, 

 believed to be authentic, have been made : Samoa (Lenz) ; Thursday I. (Ortmann) ; 

 Baleine Bank, N.W. Australia, 20 fms. ; Baudin I., 8-15 fms. ; Arafura Sea ; Holo- 

 thuria Bank, China Seas, 15-24 fms. (Pocock) ; Amboina (Zehntner) ; Zanzibar ! 

 (Lenz). 



The confusion between this and the preceding species has in a large measure arisen 

 from the use of characters derived from the carination of the last somite and telson, 

 while the more valuable feature of the presence or absence of grooves on the first five 

 segments of the abdomen seems to some extent to have been overlooked. 



6. Gonodactylus herdmani, Tattersall. 

 Plate X, fig. 114, 114a. 



1906. Gonodactylus herdmani, Tattersall, Ceylon Pearl Oyster Rep., V, p. 169, pi. i, figs. 8-10. 



1907. Gonodactylus herdmani, Borradaile, Trans. Linn. Soc. Zool. (2), XII, p. 210. 



The carapace is about one and a third times as long as broad and is not narrower 

 in front than behind. The anterior margins on either side of the rostrum slope for- 

 wards, and the rounded antero-lateral angles are well in advance of the rostral base. 

 The rostrum is sharply trispinous ; the median spine may extend beyond the middle 

 of the eyestalks or may reach only to their base. 



The dorsal processes of the ophthalmic somite consist of a pair of small transverse 

 plates with broadly-rounded anterior edges. The cornea is not wider than the stalk 

 and is set very obliquely on it. 



The mandibular palp is three-segmented, but the division between the two proxi- 

 mal segments is rather indistinct. 



The form of the raptorial claw is almost exactly the same as that of G. chiragra ; 

 there is a single large movable spine on the dorsal surface of the propodus close to the 

 proximal end. 



The lateral margins of the eighth thoracic somite are rounded ; those of the sixth 

 and seventh somites are more or less truncate with rounded anterior and posterior 

 angles. 



The first five abdominal somites, except for the customary |_-shaped carina along 

 the antero-lateral margins, are entirely smooth, though in large specimens one or two 

 minute pits may be discerned in the middle of the dorsal surface. The postero-lateral 



