178 



of the penultimate pair considerably greater in breadtli tlian in length, and 

 having the anterior edge angularly bent in tlie middle. Last pair of pereiopoda 

 with the basal joint exceeding in length the remaining part of the leg, 

 posterior expansion rather broad and obtusely truncated at the tip, ischial joint 

 comparatively' large and stout, propodal joint shorter than tlie 2 preceding 

 joints combined, and oldong in form, dactylus broadly lanceolate, and exceeding 

 its half length. Last jiair of uropoda with the rami scarcely twice as long as 

 the basal part, and only fringed with simple spiniform bristles. Telson oblong, 

 about twice as long as it is broad, slightly tapering in its outer part, with 2 

 pairs of dorsal denticles, tip blunted. Colour not yet stated. Length of adult 

 female 1 1 mm. 



BemarJis. — The present species, at tirst detected by Bruzelius on the 

 Bohuslan coast, is chiefly distinguished from those previously described, by 

 the nearly equal-.sized antenuEe, a characteristic which gave rise to the specific 

 name. It is, moreover, characterised by the unusually short and robust form 

 of tlie antepenultimate and penultimate pairs of pereiopoda, as also by the 

 less produced frontal part of the cephalon. 



Occurrence. — The species would seem to occur along the whole south 

 and west coasts of Norway, and northwards tip to the Lofoten Isles, in depths 

 varying from 50 to 200 fathoms. Li some places, it may be found in great 

 "abundance, tlins in the ("liristianiafjord at Drobak, from wliicb locality Prof. 

 Loven, long ago, brouglit liome a vast number of specimens. 



Dit'-frihittion. — Britisli Isles (Norman), .Slietland Isles (the same author), 

 Bohuslan (Bruzelius). 



11. Ampelisca anomala, <t. 0. Sars. 



(I'l. 02, tig. 2). 

 Ampelisca anomala, Cf O. S.irs, Oversigt af Norges Crustaceer I, p. 108, PI. 6, fig. 2. 



Cephalon about the length of the 3 anterior segments of mesosome 

 combined, frontal part gradually tapering di.stally, with tlie tip ti-ansversely 

 truncated and rather deeply emarginated in tlie middle, inferior corner acutely 

 produced. First pair of coxal plates rather expanded distally, and obli(|uely 

 rounded at the tip, without, however, as in most other species, concealing the 

 basal part of the inferior antennae; 4th pair nearly as broad as deep, with 

 the inferior edge longer tlian the posterior. Last pair of epimeral plates of 

 metasome rectangular. First segment of urosome having dorsally a distinct 

 carina terminating in a sliarp corner. Corneal lenses unusually large, 

 though less refractive tliau in most other species, the lower pair placed on 

 the sides of the cephalon at some distance both from the inferior edge, and 



