ON THE SHETLAND CRUSTACEA, TUNICATA, ETC. 295 



Paradoxostoma obliquum, G. 0. Sars. " Shetland, Mr. D. Robertson " (G. S. 



Brady). 



ensiforme, Brady. St. Magnus Bay and Bressay Sound, 5-50 fathoms. 



flexuosum, Brady. St. Magnus Bay, abundant. 



arcuatum, Brady. A few specimens, 50 fathoms, in St. Magnus Bay ; 



also a much smaller form, closely allied to, but perhaps distinct from, this 



species, common on Laminaria3 in Balta Sound ; it is of a green colour. 

 Philomedes int&rpwnctct (B'diYdi)=Philomedes longicornis, Lilljeborg. Two or 



three specimens on the Unst Haaf. 

 Cypridina Norvegica, Baird, Proc. Zool. Soc. 1860, p. 200, pi. Ixxi. fig. 4 ; 



G. 0. Sars, Overs, af Norges mar. Ostrac. p. 104. I have pleasure in 



announcing this, the grandest of European Ostracoda, as a member of 



the British fauna, a single specimen having been procured on the Unst 



Haaf in 1867. 

 Cylindroleberis Marice (Baird). Unst and Skerries Haafs, and St. Magnus 



Bay. 

 Bradycinetus jBrenda (Baird) =. Cypridina globosa, Lilljeborg. " Dredged in 



80-90 fathoms, sand, 20 miles east of the Noss, in the Shetland Isles, 



by E. M< Andrew, Esq." (Baird). 

 ConcJioecia obtusata, G. 0. Sars. A single imperfect Conchoecia, believed to 



belong to this species, was procured from sand dredged on the Unst 



Haaf, 20 miles N. by E. from Burrafirth, in 1863. 

 Polycope orbicularis, G. 0. Sars. 5-8 miles E. of Balta, 20-25 miles N. of 



Burrafirth Lighthouse, and in St. Magnus Bay, 40-100 fathoms. 

 dentata, Brady. The type specimen was from 100 fathoms, about 20 



miles JN".W. by W. from Burrafirth. 



Order COPEPODA. 



Cyclops serrulatus, Fischer. This is the only Shetland species I have as yet 

 determined, but I have seen others. 



nigricauda, n. sp. Antennae shorter than first segment of body, 21- 



jointed; joints very short, all except first and last two shorter than 

 broad. Lower antennae stout and strong, two- thirds as long as upper 

 antennae ; third joint with a seta at distal extremity of hinder margin ; 

 fourth (last) joint terminating in six long seta3. Last feet 1 -branched, 

 well developed, with a strong seta on the middle of the outer margin, 

 and two similar terminal setae, one at each angle of the extremity, with 

 a very delicate and minute seta in the middle between them. Caudal 

 laminae extremely long and slender, more than equal in length to three 

 preceding segments, of a dark brown colour throughout the greater part 

 of their length. 



A marine species found among Laminariae in Shetland, and also at 

 Tobermory in the Isle of Mull, abundantly. The black colour of the 

 basal portion of the caudal laminae is a very useful characteristic by 

 which to distinguish the species with a low-power lens when mixed in 

 a mass with other Copepoda. 



In the male the antennae are only 17-jointed, and the caudal laminae 

 shorter, about equal in length to the two preceding segments. 



pallidus, n. sp. Upper antennae shorter than first segment of body, 



11- or 12-jointed (the basal joints not very distinct) ; last two joints 

 longer than broad, last joint but two broader than long, two joints pre- 

 ceding this long, rest shorter. Caudal laminae scarcely twice as long as 

 broad, and shorter than the preceding segment. 



