308 Part III.— Ninth Annual Report, 



CLADOCERA. 



PolyphemidjE. 



Podon polypliemoid.es, Leuckart. 



1859. Podon polyphemoides, Leuckart, ' Arch. f. Naturg. 1./ p. 



263, t. vii. fig. 5. 

 1859. Podon polyphemoides, P. E. Miiller, idem, p. 220, t. vi. 

 figs. 5, 6. 

 Habitat. — Firth of Forth, in surface tow-net east of Inchkeith; not 

 very common; December 1890. This species has also been recorded for 

 St Andrews Bay by Professor M'Intosh. 



AMPHIPODA. 



DuLICHTIDiE. 



Didichia porrecta (Spence Bate). 



1857. Pyopedos porrecta, Spence Bate, ' Ann. Nat. Hist.,' 2nd ser., 



vol. xix. p. 151. 

 1868. Dulichia porrecta, Bate and Westwood, * Brit. Sess.-Eyed 

 Crust.,' vol. ii. p. 21. 

 Habitat. — Off Musselburgh, Firth of Forth, among trawled material 

 (weeds, zoophytes, <fcc.) ; a few specimens only; April 1891. The pro- 

 podos of the second Gnathopoda are armed with the two prominent for- 

 ward-directed teeth characteristic of the species. 



ISOPODA. 



ASELLID.E. 



Leptaspidia brevepes, Spence Bate and Westwood. 



1868. Leptaspidia brevepes, Spence Bate and Westwood, ' Brit. 



Sess.-Eyed Crust.,' vol. ii. p. 333. 

 1888. Leptaspidia brevepes, Robertson, f Amphipoda and Isopoda 



of the Firth of Clyde,' p. 76. 



Habitat.— Off Musselburgh, Firth of Forth; rare; April 1891. This 

 species, seen from above, is broadly ovate ; it is also considerably 

 depressed. The species is a very small one, being little over the one- 

 twentieth of an inch in length. It was first obtained by Mr Robertson 

 at Cumbrae, and described in ' British Sessile-Eyed Crustacea.' I have 

 observed it in East Loch Tarbert, Loch Fyne ; but it does not appear to 

 be a common species anywhere. There is no danger of mistaking it for 

 Munna, though it seems to be nearly allied to that genus. 



SCHIZOPODA. 



Mysid^:. 



Mysidopsis angusta, G. O. Sars. 



1863. Mysidopsis angusta, G. 0. Sars, ' Zool.-Reise,' p. 30. 

 1872. Mysidopsis angusta, G. O. Sars, ' Mon. over Norges My- 



sider,' pt. ii. p. 27, pi. viii. figs. 14-24. 

 1876. Mysidopsis angusta, G. O. Sars, * Middelha vet's Invert. 



Fauna,' p. 101. 



