PHOTIDAE 231 



The position is obviously unsatisfactory and Chilton's arguments inconclusive. One 

 may, however, with some degree of certainty claim that the Gough Island and Falkland 

 Islands specimens are the same species, and that they are not the same as dentatus. I think 

 that in all probability there were three denticles, excluding the one at the defining angle, 

 on the palm of gnathopod 2 in the Gough Island specimen, though Chilton described and 

 figured only two. Chilton in 19 12 made no mention of side-plate 1 or the pleon segments 

 being dentate, and in fact referred the specimens (with hesitation) to afer in which these 

 parts are not dentate. Therefore I feel justified in assuming that in 1920 the Gough 

 Island specimens were not actually re-examined by Chilton, and that his statement of 

 their similarity to the New Zealand form was based on the gnathopods. There still 

 remains, however, the unaccountable difference in the 5th joint of gnathopod 2 in $. 



A new name for the Scotia and Discovery specimens seems desirable. 



Distribution. Gough Island. 



Eurystheus palmoides, n.sp. (Fig. 144). 

 Occurrence: St. 91. South Africa. 3 <$$ 3-5 mm. 



Description. Closely resembling palmatus, but differing in the 2nd gnathopod, viz. 

 2nd joint channelled in front, each keel ending 

 distally in a small projecting lobe, 6th joint ovate, 

 palm evenly convex, extending almost to base of 

 joint where it is defined by two small spines, 

 finger much shorter than palm, strongly curved 

 and closing against inner surface of hand. Epi- 

 stomial spine well developed. 



Second joints of peraeopods 3-5 as m palmatus, ^ ^ cZt^odtT^' "^ 

 that of peraeopod 3 the most, that of peraeopod 

 5 the least expanded. 



No dorsal denticles. Eyes obliquely oval. Postero-inferior angle of pleon segment 3 

 rounded-quadrate. 



Eurystheus eurypodii, n.sp. (Fig. 145). 

 Monod, 1926, p. 6o, fig. 57 (figures only). 

 Occurrence: St. 55. Falklands. 3 <$<S 3 mm., 2 ovig. $? 3-5 mm. from Eurypodius. 



Description. Eyes broadly oval. Antero-lateral angle of head acute. Side-plates 1-4 

 as deep as, or even slightly deeper than, their segments; 1 not produced forwards, 

 1 and 2 rounded below. Pleon dorsally smooth. Postero-inferior angle of pleon seg- 

 ment 3 rounded-quadrate. Telson rounded-triangular, with two setae on upper surface. 



Antenna 1, flagellum 7-jointed, accessory flagellum 2-jointed. Antenna 2, flagellum 

 7-8-jointed. Epistomial spine well developed. 



Gnathopod 1, 5th joint moderately long, its width equal to width of 2nd joint, 6th 

 scarcely as long as 5th, wider, oval, palm oblique, continuous with hind margin, but 

 defined by a spine, finger overlapping palm. Gnathopod 2 in <$, 2nd joint stout and 



