ox THE SHETLAND CRUSTACEA, MOLLUSCOIDA, ETC. 439 



Call ioj> his, having subequal ovate gnathopods ; but the peduncles of the an - 

 tennte are longer and the flagclla shorter than is usual in that genus, and 

 the meros of the pereiopods is not produced backwards and downwards ; a 

 Plemtes (?), with smooth bod)-, and hands somewhat resembling in structure 

 those of the second pair in AmiiliUoclius mcimidens, Bate, with the palm 

 similarly crenated, but much more obhque ; a now genus allied in general 

 characters of eyes, of gnathopods, and pereiopods, especially in the broadly 

 flattened meros and carpus of the last pair, to Haploops, but having the an- 

 tennfc furnished with an appendage ; an Atijlus, remarkable on account of 

 the extraordinary length and slcndcrness of the legs, and having the hinder 

 margin of all the abdominal segments serrate across the back with a larger 

 central spine ; a Cijrtophium, having the segments of the body furnished with 

 spine-formed tubercles, which are much larger than those of C. tulercularis, 

 Bruzelius, from which it also differs in having the hand of the second gna- 

 thopods shorter and broader, and the spine of the meros large and strong ; 

 and a Coroplilum, with longer posterior uropods and less strongly developed 

 antennae than the species hitherto described. 



Of Isopoda the very rare species Paratanais rigidus, B. & W., Phryxus 

 ahdomincdis, parasitical in HippoJijte pitsiola, Leptaspidia hrevipes, B. & W., 

 and Cirolana splnipes, B. & "W., were found, together with what appears to 

 be a new species of the last genus. The form comes nearest to the yEga 

 cremdata of Liitken, agreeing with it in having the telson truncated and 

 denticulate at the extremity ; the general outline of the telson, however, 

 differs from Liitken's figure, and the uropods are of different form. 



My attention was especially directed during the expedition to the Ento- 

 mostraca, and an enormous stock of material has been accumulated for 

 examination. It has as yet scarcely been touched, but the following new 

 things have already been observed. First and foremost is C'l/pridina Nor- 

 vegica of Baird — the largest of all European Ostracoda ; next is a very fine 

 arctic Cythereis, Cgthereis costatu of Brady, only known previously from the 

 Hunde Islands ; Pontocupris luspida, C'l/thereis cremdata, and Cythereis ahys- 

 sicola are species recently described by G. 0. Sars from the jSTorwegian seas ; 

 and besides these there are four species of Cyiliere, one Cytheridea, two 

 Cythenira (including by far the finest species of the genus yet known), and 

 a species allied perhaps to ArglUcecki cyUndrica of Sars, which appear tobe 

 new to science. There are also several members of the famihes Altcuthklce 

 and Barpactkidce, together with a curious form, parasitic in Dklemnaum 

 qelatinosum, which I am unable as yet to determine, and believe to be 

 undescribed. 



The very rare and curious burrowing barnacle, Akippje hmpas, Hancock, 

 was inhabiting sheUs of Fusus aniirpnts, dredged five miles off Balta. 



Ttjxicata. 

 The Tunicata dredged were very few, but included Ascklia rudis, Alder, a 

 large species discovered in 1861, and this year procured between the^Islands 

 of Whalsey and Balta. In a cave in St. Magnus Bay, Thyhciiim Kormani, 

 Alder, was living in great numbers ; it was only previoiisly known m the 

 Channel Islands, where it covers a large portion of the side of the^ famous 

 Gouliot Cave. Salpa runcinata was met with in some numbers in the open 

 sea thirty miles N.N.W. of Burrafirth Lighthouse, but was not observed 

 nearer shore. 



