442 
ME. W. E. HOYLE ON THE DEEP-WATEE 
Fig. 8. The egg-follicle from the ovary of a mature egg-laying insect. 
X 200. 
9. Transverse section of an egg. me, micropyle canal ; eh, chorion ; 
v, vitelline membrane ; cl, clear yelk ; y, granular yelk. X 30. 
10. A longitudinal section of an egg. one', chamber at anterior pole of 
the egg ; on, micropyle. 
11. A section of the yelk, a, clear margin ; h, granular yelk. X 400. 
12. The micropyle. X 400. 
13. A section through the micropyle. X 400. 
14. The testes of a larval blowfly, showing the union of the prolongations 
from which the duct is developed : after Weismann. 
15. The gum-gland and some of the adjacent fat-body. I, lumen of the 
gum-gland; e, epithelium of gum-gland ; bb, capsule of fat-cells; 
a, c, d, stellate and flask-shaped cells enclosed within the capsule. 
X 200. 
16. Transverse section of the gum-gland of the mature insect. 
17. Transverse section of the gum-gland of the immature insect. 
18. 19, 20. Epithelial cells from the gum-gland, with the contained 
corpuscles and nuclei in different stages of development. 
On the Deep-water Eauna of the Clyde Sea-area. By William 
E. Hoyle, M.A. (Oxon.), E.R.S.E., Keeper of the Man- 
chester Museum. (Communicated by John Mueeay, LL.D., 
Ph.D., V.P.R.S.E., E.L.S.) 
[Eead 4th April, 1889.] 
(With Map : Plate XXIX.) 
Since the establishment of the Scottish Marine Station in the 
year 1884, Dr. John Murray lias conducted an extensive series of 
dredgings in the greater number of the lochs of the west coast of 
Scotland. During these operations he was struck, as Eorbes bad 
been before him, with the restricted distribution of certain forms, 
as well as with the fact that some species occurred nowhere off 
the British shores except in these depressions. 
In the summer of last year, Dr. Murray suggested that I 
