of the Fishery Board for Scotland, 233 
Genus Graptoleberis, G. O. Sars. 
Graptoleberis testudinartus (Fischer). 
1851. Lynceus testudinarius, Fischer, Mem. de Lav. étrangers, 
St Petersbourg, vol. vi. p. 191, Pl. IX. figs. 3-6. 
1862. Graptoleberis reticulata, G. O. Sars, op. cit., Andet Bedrag., 
p. 41. 
1884. Graptoleberis testudinarius, Herrick, Crust. of Minnesota, 
p. 90. 
The peculiar hood-like portion of the carapace that forms the head 
imparts a distinctive appearance to this species. It was very scarce in 
the Loch Morar gatherings, one or two specimens only being obtained in 
bottom material from the head of the loch. 
Genus Alona, Baird. 
Alona guttata, G. O. Sars. 
_ 1862. Alona guttata, G. O. Sars, op. cit., Andet Bidrag., p. 38. 
This Alona was one of the more common of the smaller species in the 
gatherings of lhottom material. The carapace viewed laterally is sub- 
quadrilateral in form, and the surface of the carapace is usually ornamented 
by being thickly covered with puncture-like markings. By means of the 
form and sculpture of the carapace the species is readily distinguishable 
among its more common associates. 
Alona costata, G. O. Sars. 
1862. Alona costata, G. O. Sars, op. cit., Andet Bidrag., p. 38. 
In the same material with the last, but much scarcer. This species, 
though somewhat like the last, wants the peculiar puncture-like markings ; 
it is rather longer in proportion to the breadth, and there are usually* 
impressed parallel longitudinal lines observable on the carapace. 
Alona quadrangularis (Miiller). 
1776. Lynceus quadrangularis, Miiller, Zool. Dan. Prod., p. 199, 
No. 2393. 
1850. Alona quadrangularcs, Baird, Brit. Entom., p. 131, PI. 
XVI. fig. 4. 
In the gatherings of bottom material, but not very common. 
Genus Alonella, G. O. Sars. 
Alonella exigua (Lilljeborg). 
1853. Lynceus exiguus, Lilljeborg, De Crust. in Scenia, p. 79, Pl. 
VII. figs. 9-10. 
7oth of an inch—but 
distinguishable by the broadly ovate form of the carapace, and the 
distinctly toothed posterior angle of the front margin. It appeared to be 
a scarce species. 
Alonella nana (Baird). 
1843. Acroperus nanus, Baird, Ann. and Mag. Nat. Hist, vol. 11. 
Dees, £1. IL. fig. 8. 
1862. Alonella pygmea, G. O. Sars, op. cit., Andet Bidrag., p. 52. 
This was also apparently a rare species, but from its small size—less 
than the ;3,th of an inch—it is easily overlooked. It is readily 
distinguished by the beautiful sculpture of the shell. 
