10 SLADEN TRUST EXPEDITIONS TO ABROLHOS ISLANDS. 
teeth o£ a peculiar form" (Walker, 1904). Barnard (1916), in 
describing E. jDeclenicrus, Bate, from S. Africa, to which species 
he refers Walker's JE. serrula as a synonym, figures the second 
joint of the fourth perseopod, showing a condition exactly 
similar to the second joint of the fifth perseopod in my specimen. 
I may note that on one side the hinder margin of the second 
joint of the fifth perseopod is concave and on the other 
convex or evenly curved. Barnard suggests that the concave 
margin is a condition of maturity. The fifth perseopods of 
my specimen are not so setose as is described by Chilton for 
New Zealand specimens. Having only one specimen, it is 
impossible to say whether these differences are constant and 
of specific value. The two dorsal carinse of the fourth pleon 
segment exclude this specimen from all other described species, 
and in the character of the second gnathopods the specimen is a 
typical adult male of JU. siihcarinata as figured by Chilton. I 
prefer, therefore, to regard the specimen as at most an individual 
variation of this widely distributed species. 
Family PHOTIDiE. 
Genus Ecrystheus, Bate. 
8. EuRYSTHEUS ATLANTicus {StehUng). (PI. 1. figs. 17-20.) 
Oammaropsis ntlantica, Stebbing', 1888, p. 1101, pi. 114. 
G. zeylatikus, Walker, 1904, p. 282, pi. 6. fig. 41. 
G. gardineri, Walker, 1905, p. 929, pi. 88. figs. 11-14, 16-17. 
Eurystheus atlanticus, Stebbing, 1906, p. 611. 
E. atlanticus, Stebbiug, 1908, p. 86 (1), pi. 40 H. 
E. zeylanicus, Walker, 1909, p. 339. 
E. atlanticus, Walker, 1909, p. 339. 
„ Stebbing, 1910 (1), p. 614. 
Locality. Dredged off Wallaby Grroup, one female with ova, 6 mm. ; one 
adult male, 6 mm. ; two young males, 4 and 4*5 mm. 
Distribution. Cape Verde Islands (Stebbing), Ceylon, Maidive and 
Laccadive Archipelagoes, Seychelles (Walker), S. Africa (Stebbing), 
Australian coasts (Stebbing). 
Remarks. These four specimens are all imperfect; or\y one, the larger of 
the immature males, has any of the antennjc still attached, and that only the 
peduncle with the accessory appendage on one side only. The accessory 
appendage is composed of four joints, three large ones and a small terminal 
one. 
Only the two larger specimens have the lageniform eyes characteristic of 
the species. In the two smaller specimens the neck of the flask, so to speak, 
is wanting. 
