1913-] S. Kemp: Crustacea Stomatopoda of the Indo-Pacific Region. 183 



in an evenly rounded apex before reaching the distal margin. The three lobes are 

 connected with one another in the extreme anterior part of the telson and, in the larger 

 specimen, the margins of the lateral pair are feebly corrugated. Along the lateral 

 edge of the telson there is a prominent rounded ridge ; this ridge is continued to the 

 outermost tooth on the distal margin, and is obliquely grooved in its posterior third. 

 In the centre of the distal margin there is a deep and very narrow fissure extending 

 half-way to the median boss, and on either side of this the edge is inflated and so forms 

 a pair of obscure ridges. Three stout teeth, separated by triangular notches are found 

 in each half of the posterior margin. There are numerous submedian denticles and one 

 on the inner aspect of each of the lateral teeth. 



The inner spine of the bifurcate process of the uropod is extremely small, not more 

 than one quarter the length of the large and broad outer one. There are eight movable 

 spines on the external aspect of the basal segment of the outer uropod. 



There can be little doubt that the two specimens on which the above description 

 is based are correctly referred to Gonodactylus glaber. They differ, however, from Iyenz's 

 account in having the carapace and median rostral spine slightly longer proportionally. 

 The keels on the lateral margins of the telson are not clearly shown in the original figure, 

 and there is no mention' of the proximal notch on the external margin of the raptorial 

 dactylus. 



Spirit specimens are pale or brownish in colour with scattered black chromatophores 

 which tend to form bands or patches in the posterior part of the carapace, on the sixth 

 and seventh thoracic and on the first, fourth and fifth abdominal somites. 



The two examples of Gonodactylus glaber in the Indian Museum are registered 

 thus : — 



^P Gt. Coco I., N. Andamatis. ' Investigator.' 1 ? , 26 mm. 



^p Gt. Coco I., N. Andamans. ' Investigator.' 1 9 , 12 mm. 



Previously known from Ceylon and Zanzibar (I,enz). The largest recorded speci- 

 men is 30 mm. in length. 



17. Gonodactylus tanensis (Fukuda). 



1911. Protosquilla tanensis, Fukuda, Annot. Zool. Japon., VII, p. 285, pi. xi, figs. 1, 2. 



Of this species I have seen no specimens. It is, as Fukuda has remarked, closely 

 allied to G. glaber, but may readily be distinguished from it by the sculpture of the 

 last abdominal somite and telson. 



In addition to the usual prominences, the last abdominal somite is (i completely 

 covered with irregularly-marked depressions." The telson bears three bosses, 

 situated much as in G. glaber, but with larger interspaces. These interspaces are 

 covered with irregular depressions and in Fukuda' s figure look almost as if honey- 

 combed. The median distal fissure and the lateral marginal lobes are nearly as in 

 G. glaber and are provided with similar spinulation. 



