40 
Dr. G. J. Hinde on Radiolaria from the 
the granulosa, nor, I think, is this possible without the aid of 
the microtome. 
EXPLANATION OF PLATE II. 
Fig. 1. Process of attachment of ovum attributed to Gobius minutus\ 
the filaments are mostly curtailed, fit — filament ; ^=pedicle of 
attachment ; sp = apertures in process of attachment ; z. r. = zona 
radiata. (Zeiss D, Oc. 4.) 
Fig. 2 Group of ova in situ. X 3. 
Fig. 3. Detached ova highly magnified, a. p. = process of attachment ; e= 
embryo ; ?/=yolk. 
Figs. 4, 5. Ova of Gobius niger from glycerine-preparations, enlarged 
under lens. 
Fig. 6. Larval Gobius of 14th May, 1890 ; length 3*57 millim. a. b. = air- 
bladder ; ^=heart ; n = notochord ; */=yolk. Magnified. 
IV. — Notes on Radiolaria from the Lower Palaeozoic Rocks 
(Llandeilo- Caradoc) of the South of Scotland. By GEORGE 
Jennings Hinde, Ph.D. 
[Plates III. & IV.] 
The Badiolaria described in this paper are contained in speci- 
mens of chert collected from several different localities in the 
Southern Uplands of Scotland, and sent to me for examina- 
tion by the Geological Survey of Scotland through B. N. 
Peach, Esq., F.G.S. From the most promising pieces of 
this chert a number of microscopic sections have been pre- 
pared, and from these the forms have been studied. I may 
premise that the occurrence of these minute organisms in this 
chert was first announced by my friend Prof. H. Alleyne 
Nicholson, M.D.*, of Aberdeen ; but the specimens which he 
examined did not show the structure sufficiently well to allow 
of positive determination as to their real nature. 
The chert containing the Badiolaria occurs in beds and 
intercalated nodular masses in a portion of the well-known 
series of Ordovician or Lower- Silurian strata forming the 
Southern Uplands of Scotland ; and it is more particularly 
developed in the counties of Lanarkshire, Peeblesshire, and 
Edinburghshire. Mr. B. N. Peach who has lately been 
resurveying the district, informs me that he has traced a defi- 
* Trans. Edinb. Geol. Soc. vol. vi. pt. i. p. 56 (1890). 
t A full description by Mr. Peach of the geological and stratigraphical 
relations of these rocks will appear in a forthcoming Geological Survey 
Memoir on Sheet 16. 
