BRANCHIOPODA. 345 
(?) P. uncinatus, Baird.—Pond nr. Rutherglen (J. Steel): Possil Marsh ; 
: L. Lomond. 
_ (SHarporhynchus falcatus, G. 0. Sars.—-L. Arklet ; L. Lomond; L. Doon, 
not r. ; 
4) 3) Peracantha truncata (Miiller)—L. Arklet; Dhu Lochan; Greenan L., 
Bute; L. Doon. 
(u) Chydorus sphaericus, Miiller.—C. and gen. dist. 
U7 JC. globosus, Baird.—Possil Marsh ; Bardowie L., nr: Glasgow ; L. Lomond ; 
Park L., nr. Campbeltown. 
(4) C, (2) latus, G. O. Sars.—Only observed in L. Arklet. 
(aC. barbatus (G. S. Brady).—In most Lochs within Clyde area. 
(i yD. coelatus, Schoedler.—L. Arklet ; L. Doon; Park L., not c. 
_ Anchistropus emarginatus, G. 0. Savs.—Paisley Canal in 1863 (R.). Not 
: observed since. 
(7 Monospilis tenuirostris (Fischer).—L. Lomond (shore bet. Balmaha and 
mouth of R. Endrick), rather r. 
Sh a Fam. Polyphemidae. 
/+) Polyphemus pediculus (/in.).—Possil Marsh; L. Arklet; L. Lomond ; 
Park Li* 
Y (4)Bythotrephes longimanus, Leydig.—L. Arklet ; L. Lomond; L. Doon, not 
unc. a 
(Y Podon polyphemoides, Leuckart.—F. of Clyde ; L. Fyne, sometimes pretty 
abund. 
_ P. intermedius, /:lljeborg.—-Dist. similar to preceding but much less c. 
v(«)Evadne nordmanni, Lofen.—Dist. similar to Podon; c¢., sometimes very 
| abund. 
Fam. Leptodoridae. 
1(4) Leptodora hyalina, Lilljeborg—L. Arklet ; L. Lomond; L. Doon, not unc., 
esp. during summer. 
Sub-Order Branchiwura. 
uA Argulus foliaceus, Zin—Plentiful a few years ago on the Greyling, 
ly enh Thymaltus vulgaris in the upper waters of R. Clyde (Jas. Steel)! 
ORDER OSTRACODA. - 
ARRANGEMENT AND NOMENCLATURE FOLLOWED. 
(B. & N.)= Prof. G. 8. Brady and Rev. Canon A. M. Norman, “The marine 
and fresh water Ostracoda of the N. Atlantic and North-Western 
ae (Roy. Soc. Dub. Sct. Trans., vol. iv. (S. ii.) Pt. i. and vol. v. (S. ii.) 
ts xi.) ; 
R.= Robertson, 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” (V. H. Soc. Glas., vol. iv., 1879). 
B. & R.= Brady and Robertson. 
B. C. & R.=Brady, Crosskey, and Robertson. 
Fam. Cyprididae. 
-G) Cypria exculpta (S. Fischer).—Somewhat local but not very r.; Possil 
Marsh (R.): Cumbrae (B. & N.): Dalry (J. Smith): L. Doon, &c. (S.). 
‘(/ C. ophthalmica (Jurine).—-C. and gen. dist. 
¢g)Cyclocypris laevis (0. F. Viiller)—Mod. c.; liable to be confounded with 
next species. 
‘(3| GC. serena (Koch).—-One of the most ¢. and gen. dist. 
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