290 REPORT—1868. 
mity; in the terminations of the postabdominal rami being of equal 
size, and the eye wholly absent. St. Magnus Bay, in 50 fathoms, 1867. 
Now first added to our fauna. 
Pontocypris trigonella, G. O. Sars. Among Laminarie, Balta and Bressay 
Sounds ; St. Maguus Bay, 5-50 fathoms, 
acupunctata, Brady. A fine living series from St. Magnus Bay, about 
60 fathoms. 
Bairdia inflata (Norman). St. Magnus Bay, and 5-8 miles off Isle of Balta, 
in about 50 fathoms, 1867. 
complanata, Brady. 5-8 miles east of Balta, 40-50 fathoms, 
Macrocypris minna (Baird). ‘ Dredged in from 80-90 fathoms, sand, 20 
miles east of the Noss in the Shetland Isles, RK. M‘Andrew, Esq.” 
(Baird). The one specimen in my own collection was found by Mr. 
Waller in sand dredged on the Outer Haaf, in 1861. 
Cythere lutea, Miller. Common, alive, rock-pools ; dead, 60 fathoms. 
viridis, Miller. Among Laminariew, Balta Sound and Hillswick. 
pellucida, Baird. Scarce; off Balta, 73 fathoms. 
—— tenera, Brady. St. Magnus Bay, Outer Haaf, &e. 
—— convewa, Baird. “ Lerwick, Mr. Robertson ” (Brady). 
albomaculata, Baird. Alive, littoral and laminarian zones. 
—— tuberculata (G. O. Sars). Very rare, Unst Haat. 
—— concinna, Jones (Cythereis clavata, Sars). St. Magnus Bay, 50-60 
fathoms, 1867. 
angulata (G. O. Sars). “Lerwick, Mr. D. Robertson” (G. 8. Brady). 
—— dubia, Brady. The type specimen was procured in sand from the 
Unst Haaf, dredged in 1865; also Unst Haaf, 100 fathoms, 1867. 
—— costata, Brady, Trans. Zool. Soc. vol. v. p. 375, pl. lx. fig. 5. Two 
valves from the Unst Haaf, 1867, agreeing in every respect with the 
type specimens from the Hunde Islands. Now first added to the British 
fauna. 
—— villosa (Sars). Lerwick and St. Magnus Bay. 
—— quadridentata, Baird. 50-100 fathoms, off Island of Balta, and Out 
Skerries and Unst Haafs, also St. Magnus Bay. 
—— emaciata, Brady. 80-100 fathoms, Unst Haaf, rare. 
—_— mucronata (Sars). The only British specimen, in 80-90 fathoms, 20 
miles N. by W. from Burrafirth Lighthouse, 1863. 
—_— antiquata (Baird). Frequent in deep water down to 100 fathoms. 
—— Jonesii (Baird), 50-100 fathoms, Out Skerries and Unst Haats. 
~—— acerosa, Brady. St. Magnus Bay, in about 60 fathoms, and 5-8 miles 
east of Balta, in 40-50 fathoms. 
—— abyssicola (G. O. Sars). Cythereis abyssicola, G. O. Sars, Oversigt af 
Norges marine Ostracoder, p. 43.“ Lateral view of female elongated, 
subquadrate, much high«r in front than behind, the greatest height some- 
what greater than half the length ; anterior extremity obliquely rounded, 
posterior truncate: dorsal margin very prominent and angulated over 
the eyes, in the middle slightly concave, then convex, and sloping to- 
wards the hinder extremity ; ventral margin distinctly sinuated in the 
middle. Dorsal aspect of irregular form, showing on each side two 
somewhat prominent angulated protuberances, separated from each 
other by a deep sinus, both extremities a little projecting and truncate. 
Valves very hard, distinctly areolated in the middle, and girt with a 
broad and much-thickened margin, forming two lips, the innermost of 
which is finely toothed at each extremity, and beset with long hairs, 
