PHOTIDAE 



223 



Remarks. This species has only been reported once since its original description in 

 1895. The present specimens are so like Stebbing's figures as to leave no doubt of the 

 identification. There is, however, a noticeable difference in the shape of the 6th joint 

 of gnathopod 2 in the 6* . There is no mention in Stebbing's description of the ventral 

 processes in the 6*. If they were indeed present in the specimen dissected, they could 

 scarcely have escaped being observed. These processes are present on peraeon segments 

 2-6 inclusive, and there is a blunt tubercle-like process on peraeon segment 1 . 



In this latter respect there is thus a strong likeness between afer and acanthiger, Brnrd., 

 though the two species are quite distinct in the gnathopods. 



The gnathopods in the $ also resemble Stebbing's figures; the flask-like shape of the 

 5th joint in gnathopod 2 being very noticeable. 



Distribution. Cape of Good Hope (Stebbing) ; Simons Bay. 



Family PHOTIDAE 

 Stebbing, 1906, pp. 603, 737; 1910, p. 608. 



Genus Photis, Kroy. 



Stebbing, 1906, pp. 605, 738; 1910, p. 608. 

 Schellenberg, 1925, p. 170. 



Photis uncinata, n.sp. (Fig. 138). 



Barnard, 1916, p. 243, pi. xxviii, fig. 26 (longicaudata, non Bate and Westw.). 

 Occurrence: St. 91. South Africa. Many mostly ovig. $$, 6-7 mm. 



Description. The description of this South African form is given in the above 

 reference, where I identified it with 

 longicaudata, B. and W. I now think it 

 would be advisable to separate it as a 

 distinct species. The present specimens 

 show very well the curved acute process 

 on the antero-distal angle of the 2nd joint 

 of gnathopods 1 and 2 ; a feature which I 

 overlooked in 1916. 



Gnathopod 1, the palm is feebly de- 

 fined and has a spine near the angle, the 

 margin feebly crenulate. Gnathopod 2, 

 the palm has a series of tiny nodulose 

 points, otherwise as in the original 

 description. 



Fig. 138. Photis uncinata, n.sp. a. Gnathopod 1 (J. 

 b. Gnathopod z$. 



Remarks. The character of the palm of gnathopods 1 and 2 in conjunction with the 

 unciform projection on lower angle of 2nd joint certainly seem to warrant specific rank, 

 though the relationship with reinhardi (to which the Ceylon form seems referable) is 



