346 TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 
EXPLANATION OF PLATE—continued. 
Figure 25.—Prioniodus geminus, Hinde, new species, x42; from Upper 
Limestone, Glencart, Dalry. 
Figure 26.—Prioniodus porcatus, Hinde, new species, x30; from Uppe 
Limestone, Monkcastle, Kilwinning. 
Figure 27.—Ctenognathus obliquus, Pander, x20; from Lower Lime- 
stone, Birkhead, Dalry. 
Figure 28.—Ctenognathus obliquus, Pander, x24; from Lower Lime- 
stone, Birkhead, Dalry. 
Figure 29.—Ctenognathus obliquus, Pander, x 20; from Lower Lime- 
stone, Birkhead, Dalry. 

Notes on some Crustacea from Fairlie and Hunterston, 
Firth of Clyde. 
By Txomas Scort, F.L.S., Mem. Soc. Zool. de France, Naturalist 
to the Fishery Board for Scotland. 
[Read 27th December, 1898. ] 
Farru, Hunterston, and Portincross are places on the Clyde, 
the names of which have been familiar to me for many 
years; yet the visit I am about to refer to is the first I have 
made to any of them. Among the various reasons that induced 
me to make this visit, the following may be given :—It is, for 
example, a notorious fact that not a few rarities, both botanical 
and zoological, have been recorded from one or other of the places 
named, and also that frequent reference to one or other of these 
places is to be found in natural history works of various kinds. 
Moreover, associated with the district are the names of some of 
our most eminent naturalists, who have occasionally made it 
their hunting ground, and have been rewarded by the interesting 
discoveries they have made. It might have been thought, how- 
ever, that reasons like these should rather have tended to 
discourage the visits of subsequent investigators; such reasons 
were apt to suggest to the mind of the would-be discoverer, that 
the finding of all these rarities was a plain indication that the 
district must already have been more or less thoroughly 
examined, and was now scarcely likely to yield much that was 

