SYSTEMATIC REPORT 165 



south of France, at Banyuls and off Cannes. If we accept the Discovery specimens as belonging to 

 L. apiops, it would appear that the species has a wide distribution in shallow coastal waters of tem- 

 perate and tropical latitudes. 



Leptomysis capensis Illig, 1906 



1906a Leptomysis capensis Illig, p. 206, fig. 13A-D. 

 1930 Leptomysis capensis, Illig, p. 474, figs. 149-51. 



Occurrence : 

 St. 279. 10. viii. 27 (day). Off Cape Lopez, 58-67 m., 1 adult <J, 7-6 mm. 



St. 406 

 St. 421 

 St. 424 

 St. 443 



5. vi. 30 (day). Off Cape Peninsula, 29 m., 1 & 8-4 mm. 



31. viii. 30 (day). South of Cape Town, 77-0 m., 5 $$, 3 $?, largest 6 mm., all imm. 



4. ix. 30 (night). Off Port Elizabeth, 59-0 m., 1 $, 8 mm. 



23. ix. 30 (night). South-west of Port Elizabeth, 49-0 m., 8 $$, largest 8-4 mm., 20 ??, largest 8-4 mm., 



2 juv. 

 St. 444. 24. ix. 30 (night). South of Cape Peninsula, 80-0 m., 1 adult ?, 8-6 mm. 



Remarks. The only previous record of this species is of the types from near Cape Agulhas, 

 South Africa, and from south of Cape Town. Illig's specimens were all very small, the largest being 

 only 5 mm. in length. He states that one of the most outstanding characters of the species is the pecu- 

 liar shape of the eyes, in which the stalks are very thick and barrel-shaped and are wider than the 

 cornea. He does not record whether his specimens were adult, but by comparison with the Discovery 

 material, I believe that they were all juvenile and I attribute the form of the eye to their immaturity. 

 Eyes of the shape figured by Illig (1930, fig. 149) are frequently found in juvenile mysids. Most of 

 the present specimens are fully mature, measuring 8-8-6 mm., but the few juveniles agree very closely 

 with Illig's figures. 



In the adults the eyes are of a different shape, resembling those of L. megalops. They are very large, 

 with the cornea occupying considerably more than half the whole organ, the eyestalk small proximally 

 and widest next the cornea. 



The outstanding character of the species is the dense covering of fine short bristles over the whole 

 integument, which makes it possible to recognize specimens immediately and forms the most ready 

 means of distinguishing them from L. megalops, which they so closely resemble in all other respects. 



Distribution. Except for the one record of this species from near Cape Lopez at station 279, 

 it has only been taken off the south coast of South Africa. I think it is probable that it may occur in 

 coastal waters along the west of South Africa as far north as Cape Lopez. 



Leptomysis megalops Zimmer, 1915 



19156 Leptomysis megalops Zimmer, p. 320, figs. 

 1929 Leptomysis megalops, Colosi, p. 422, fig. 

 1941 Leptomysis megalops, Bacesco, p. 25. 



Occurrence : 



St. 274. 4. viii. 27 (day). Off St Paul de Loanda, 65-64 m., 1 adult <S, 7-2 mm., 2 imm. ??, 6-8 mm. 



St. 277. 7. viii. 27 (night). South-west of Cape Lopez, 63(-o) m., 5 adult S3, largest 8-4 mm., 4 adult ?$, 8-2 mm., 



7 juv. 



St. 444. 24. ix. 30 (night). Off the Cape of Good Hope, 80-0 m., 4 <£<?, largest 11 mm., 3 ?$, largest 10-2 mm. 

 St. 844. 8. iv. 33 (night). Off Cape of Good Hope, 155-0 m., 7 $S, largest 1 1 mm., 12 ??, 10-2 mm., 2 juv. <$<$. 

 St. WS 998. 13. iii. 50 (day). West of Orange River estuary. Two hauls: (i) 100-50 m., 1 badly damaged juv.; 



(ii) 175-100 m., 3 juv. 9$, largest 5-6 mm., 4 very small juv. 

 St. WS 1000. 13. iii. 50 (night). West of Orange River estuary, 100-50 m., 1 J, 8-4 mm., 3 $$, largest 8-8 mm., 



8 juv. 



