On Freshwater Entomostraca from Egypt &c 25 



than long, separated from the eye by two superposed prae- 

 oculars, below which a subocular may be present; two 

 (rarely three) postoculars ; temporals 2 + 2 or 3 ; eight or 

 nine upper labials, fourth and fifth or fifth and sixth entering 

 the eye; first lower labial in contact with its fellow behind 

 the symphysial ; two or three pairs of chin-shields, first a 

 little longer than broad. Scales in 15 rows, vertebrals 

 strongly enlarged, but not twice as broad as long. Ventrals 

 176-19J:; anal entire ; subcaudals 77-101. Blackish brown, 

 with light cross-bands or rings, which are narrow and white 

 on the anterior part of the body and then become gradually 

 broader and brown edged with white ; first light bar across 

 the occiput; head dark brown above, with light verrai- 

 culations and some black spots and a bar across the forehead ; 

 a broad black bar below the eye, 



Totallengtb 600 mm.; tail 140. 



Several specimens from Pueblo Rico, slopes of San Juan 

 River, Colombian Choco, 5200 feet, from the collection of 

 Mr. G. Palmer. 



IV. — Ow some Freshwater Entomostraca from Egypt and 

 the Soudan. By Robert Gurney, M.A. 



[Plate II.] 



Our knowledge of the Entomostraca of the Nile Valley is 

 exceedingly small, and the following list of species is offered, 

 as a slight conti'ibution to its extension. The species 

 mentioned are derived from two som-ces — (1) from my own 

 collections in Upper Egypt, and (2) from small collections 

 made by my brother, Mr. Eustace Gurney, in the White 

 Nile and the Blue Nile near Khartoum in 1902. 



My own collections were made in Egypt in the months of 

 February, March, and April of 1907 and 1909. During 

 these visits I examined various pools of fresh water from 

 Luxor northwards, as well as the Nile itself near Luxor and 

 the Birket el Kurun in the Fayum. 



My investigations were not so complete as could be wished, 

 owing to the distraction of other interests, the Faytim in 

 particular deserving much more attention; but I believe they 

 present a fairly complete picture of the Entomo&tracan fauna 

 of the region at that season of the year. They show that 

 the fauna is not very varied, and that, like the physical 



