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 trigonetta, Gr. 0. Sars. Among Lamina-rise, Balta and Bressay 

 Sounds ; St. Magnus 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, E. 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. 



Cyihere lutea, Miiiler. Common, alive, rock-pools ; dead, 60 fathoms. 



viridis, Miiiler. Among Laminariae, Balta Sound and Hillswick. 



pelludda, Baird. Scarce ; off Balta, 73 fathoms. 



tenera, Brady. St. Magnus Bay, Outer Haaf, &c. 



convexa, Baird. " Lerwick, Mr. Eobertson " (Brady). 



albomaculata, Baird. Alive, littoral and laminarian zones. 



tuberculata (Gr. 0. Sars). Very rare, Unst Haaf. 



condnna, Jones (Cythereis clavata, Sars). St. Magnus Bay, 50-60 



fathoms, 1867. 



angulata (Gr. 0. Sars). " Lerwick, Mr. D. Eobertson" (G. S. Brady). 



dubia, Brady. The type specimen was procured in sand from the 



Unst Haaf, dredged in 1863 ; also Unst Haaf, 100 fathoms, 1867. 



costata, Brady, Trans. Zool. Soc. vol. v. p. 375, pi. Ix. 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 Haafs. 



acerosa, Brady. St. Magnus Bay, in about 60 fathoms, and 5-8 miles 



east of Balta, in 40-50 fathoms. 



abyssicola (Gr. 0. Sars). Cythereis abyssicola, Gr. 0. Sars, Oversigt af 



Norges marine Ostracoder, p. 43. " Lateral view of female elongated, 

 subquadrate, much higher 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. 

 Yalves 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, 



