552 H. WOODWARD ON FOSSIL CRUSTACEA. 
Dawsoni of Salter, from the Coal-measures of Nova Scotia (see Quart. 
Journ. Geol. Soc. 1863, vol. xix. p. 77). This little Crustacean is 
known, like our specimen, only by the five posterior rings and the 
telson. There are no appendages to the penultimate somite; and 
there are four small movable obovate palettes attached to the latero- 
posterior border of the telson, which has three serrations on the 
mesial line. 
Mr. Salter refers Diplostylus to the Amphipoda, comparing it with 
the Hyperina; but the two small obovate palettes attached to the 
border of the shield-shaped telson of: Diplostylus, which are little 
more than movable spines, do not appear to me to correspond with 
the jointed abdominal appendages of the posterior somites of Hy- 
perina. 
In the specimen now under consideration the pair of natatory 
appendages arise from the somite immediately preceding the telson ; 
and in this respect they agree with the posterior pair of swimming- 
feet in Squilla and many of the Isopoda. 
Comparing our fossil with the recent genus Pseudosquilla, we 
observe that in both there are a pair of small movable spines 
attached to the posterior border of the telson. 
But the outer swimming-appendage of the penultimate somite 
has not the spinose border to its second joint—a very constant 
character in all the modern Squille, with the single exception of the 
genus Coronis, in which the segments of the body are also destitute 
of ridges. 
As we know so little, however, at present, of this Carboniferous 
Crustacean, I think it is prudent to avoid speaking with too much 
assurance as to its zoological affinities, although I incline to regard 
it as nearer to the Stomapoda than to the Isopoda. 
It is highly probable also that Dr. Dawson’s Diplostylus may 
have been related to this Crustacean ; but as it does not appear that 
D. Dawsoni possessed appendages to the penultimate body-segment, 
whereas our specimen has a pair of well-developed bifid swimming- 
feet, we cannot refer them to the same genus. I propose, then, to 
name this fossil crustacean Necroscilla Wilsoni, believing that by 
recording its discovery further elucidation of this old form will 
result. 
III. On the Discovery of a fossil Squilla in the Cretaceous Depostts 
of Hakel, in the Lebanon, Syria. (Plate XXVI. fig. 4.) 
For a knowledge of this and other new and interesting forms of 
Cretaceous Crustacea from the Lebanon I am indebted to the labours 
of the Rey. E. R. Lewis, M.A., F.G.S., Professor in the Syrian Pro- 
testant College, Beirit. 
The fossils from these Cretaceous rocks of the Lebanon are ob- 
tained from two localities, Hakel and Sahel-Alma. Of these Hakel 
is the oldest known locality, though it has been rarely visited. The 
only geologists who have actually visited it of late years are M. 
Humbert, Prof. Lewis, Dr. Oscar Fraas, and the Hon. Robert Mar- 
