194 REPORT— 1866. 



tion to the knowledge which has been gained in the extension of the range 

 of many rare and local species, not less than seventy-two species are in the 

 present Report for the first time announced as members of the British fauna. 

 These additions to our lists include 63 species of Crustacea [Macroural, 

 Stomapoda 2, Amphijioda 8, Isopoda 1, Cladocera 1, Ostracoda 37, Cope- 

 poda 13], 6 of Polyzoa, 1 of Actinozoa, and 2 of Hydrozoa *. 



The Crustacea obtained number two hundred and twelve species. Among 

 them were two well-known southern forms, Xantho florida and Xantho rivu- 

 losa, which we little expected to find so far north ; the latter, however, has 

 been met with by Prof. Loven in Sweden, though neither had previously been 

 found on any part of the Scotch coast. They occurred in company between 

 tidemarks at Tobermory, and X. rivulosa was also found at Oban. Another 

 southern species, Cmngon sculptus, which had not before been found north of 

 Arran in Ireland,' was dredged in the Minch ; and with it was associated 

 Crangon serratus, ISTorman, described by me at the British Association Meet- 

 ing in 1861, from two specimens procured on the Haaf off Shetland. This 

 species had not again been taken in our seas until the present time ; but it 

 has been redescribed by Professor Sars, from the Norwegian coast, i;nder 

 the name of Grangon ecMnulatus f. X\\ Hippolyte, also dredged in the Minch, 

 appears to be an undescribed species. It approaches to //. turgicla of Ki-oyerJ, 

 but differs in many particulars, and especially in the telson, which has no 

 less than nine pairs of lateral spines, and terminates in thirteen spines, of 

 which the nine central are subequal in length and ciliated on both margins. 

 Dorypliorus Oordoni (Bate), which has hitherto been regarded as very rare, 

 occurred in abundance. Of the Cumacea there were found two species, 

 recently added to our fauna, Diastylis hispinosa. Say (=Z>. hicornis, Bate), 

 and Ihidorella (Endora) emarginata, Kroyer, together with two new forms, 

 one a Diastylis allied to D. hiplicata, G. 0. Sars, the other a new Iphitlwe, 

 which has a crest of from 13 to 20 spines on the dorsal line of the cara- 

 pace. 



Several Norwegian Amphipoda, including some genera of great interest, 

 were for the first time met with in our seas, namely, Ampelisca carinata, 

 Bruzelius, A. macrocepluda , Lilljeborg, and A. tenuicomis, Lilljeborg, Eriopis 

 elongata, Bruzelius, and Mara Loveni, Bruzelius. There were also found an 

 undescribed Anonyx, and two forms which it is impossible to assign to any 

 genera which have been hitherto established ; for these I propose the names 

 Euonyx cJielatus and Microprotop^is macidatus. The genus Euonyx is allied 

 to Anonyx, but is distinguished by having the first pair of gnathopods fur- 

 nished with distinct chelaj, and the second pair more strongly formed than 

 the first, with a weU-devcloped subchelate hand. This is a parasitic species 

 living on Echinus esculentus. Microprotopus is allied to Microdeuteropus, 

 but has the first gnathopod feeble, the second largely developed in the male, 

 and subchelate, and the last uropods single-branched. 



Three parasitic Isopoda were taken — Gyge Hip)polytes, Kruyer, Ph-yxus 



* If to these we add Montacuta tumidula, n. sp., described in Mr. Jeffreys's Eeport, and 

 the Poraminifera eninnerated by Mr. H. B. Brady as occurring for tlie first time in our 

 seas, viz. Lagena Jcffrcysii, H. B. Brady, n. sp., L. Lyellii, Sequenza, L.j)idchella, H. B. 



Brady, n. sp., L. gracillima, Sequenza, L. crenata, Parker and Jones, Poli)trcma , sp., 



Hauerinu compressa, D'Orb., Trochammina squamata, Parker and Jones, T. gordialis, 

 Parker and Jones, ValvuUna conica, D'Orb., Cristallaria cidtrata, Montfort, and Mar- 

 gimdina rcqyhanus, L., we have a sum total of eighty-five species added to the British 

 Fauna in this expedition. 



t Sars, Vid. Selsk. Forh. i. Christiania, 1861, p. 186. 



X Monographisk. Frems. Sljegten Hippolytes Nordiske Artcr, 1842, p, 100. 



