BRANCHIOPODA. 345 



P. uncinatus, Baird. Pond nr. Rutherglen (J. Steel) : Fossil Marsh ; 



L. Lomond. 

 Harporhynchus falcatus, G. (J. Sars. L. Arklet ; L. Lomond ; L. Doon, 



not r. 

 Peracantha truncata (Matter). L. Arklet ; Dhu Lochan ; Greenan L., 



Bute ; L. Doon. 



Chydonis sphaericus, Miiller. C. and gen. dist. 

 C. globosus, Baird. Fossil Marsh ; Bardowie L., nr. Glasgow ; L. Lomond ; 



Park L., nr. Campbeltown. 

 C, (0 latus, G. 0. Sars. Only observed in L. Arklet. 



C. barbatus (G. S. Brady). In most Lochs within Clyde area. 



D. coelatus, Schoedler. L. Arklet ; L. Doon ; Park L., not c. 

 Anchistropus emarginatus, G. 0. Sars. Paisley Canal in 1863 (E.). Not 



observed since. 



Monospilis tenuirostris (Fischer). L. Lomond (shore bet. Balmaha and 

 mouth of E. Endrick), rather r. 



Fam. Polyphemidae. 



Polyphemus pediculus (Lin.). Fossil Marsh ; L. Arklet ; L. Lomond ; 



Park L. 

 Bythotrephes longimanus, Ley dig. L. Arklet ; L. Lomond ; L. Doon, not 



unc. 

 Podon polyphemoides, Leuckart. F. of Clyde ; L. Fyne, sometimes pretty 



abund. 



P. intermedius, Lilljeborg. Dist. similar to preceding but much less c. 

 Evadne nordmanni, Loren. Dist. similar to Podon ; c., sometimes very 



abund. 



Fam. Leptodoridae. 



Leptodora hyalina, Lilljeborg. L. Arklet ; L. Lomond ; L. Doon, not unc., 

 esp. during summer. 



Sub- Order Branchiura. 



Argulus foliaceus, Lin. Plentiful a few years ago on the Greyling, 

 Thymallus vulgaris in the upper waters of E. Clyde (Jas. Steel) ! 



ORDER OSTRACODA. 



ARRANGEMENT AND NOMENCLATURE FOLLOWED. 



(B. & N.) = Prof. G. S. Brady and Eev. Canon A. M. Norman, "The marine 

 and fresh water Ostracoda of the N. Atlantic and North-Western 

 Europe (Roy. Soc. Dub. Sci. Trans., vol. iv. (S. ii.) Pt. ii. and vol. v. (S. ii.) 

 Pt. xii.). 



E. = Eobertson, Dr. D., F.G.S., F.L.S. Ostracoda in " Notes on the fauna and 



flora of the W. of Scotland," 1876. 



"Fresh and Brackish water Ostracoda" (T. H. Soc. Glas., vol. iv., 1879). 

 B. & E. = Brady and Robertson. 



B. C. & E. = Brady, Crosskey, and Eobertson. 



Fam. Cyprididae. 



Cypria exculpta (S. Fischer). Somewhat local but not very r. ; Fossil 

 Marsh (E.) : Cumbrae (B. & N.) : Dairy (J. Smith) : L. Doon, &c. (S.). 



C. ophthalmica (Jurine).C. and gen. dist. 



Cyclocypris laevis (0. F. Miiller). Mod. c. ; liable to be confounded with 



next species. 

 C. Serena (Koch). One of the most c. and gen. dist. 



