188 
CRUSTACEA. 
Subfam. 17. Photins0 : Photis, MicroprotopuSj Xenoclaa. 
Subfam. 18. Microdeutopinse ; MicrodeutopuSj Aora, Autonoe^ Proto- 
medittf Gammaropsis, Podoceropsis, 
Subfam. 19, Amphitboinae : Amphithoe, Si/namphithoe. 
Subfam. 20. PodocerinsB : Podocei'us, Janassa, Cerapus. 
Subfam. 21. ChelurinsD (Allman) ; Chelura. 
Subfam. 22. Corophi[i]n80 (Dana) : Corophimn, Si 2 ihonoecetus, Glauco- 
nomOy Hela. 
4th fam. Dulichi[i]dse (Dana) : DuUchia, Paradulichia^ LcetmatophiluSf 
Xenodice. 
5th fam. Oaprellidae. 
Subfam. 1. Caprellinse : Proto, Cercops, JEyina, Mginella, Caprella, 
Podulirius. 
Subfam. 2. Cyaminae (Kroyer) : Platycyamus, Cyanius. 
Gammarus arcticus and Themisto borealis occur in large swarms in the 
Arctic sea, and form the principal food of many marine animals, probably also 
of the Right Whale. Buchholz, Erlebnisse &c. pp. 3-5. 
Gammaridaj. 
Bock, 1. c., characterizes the following new genera and spp. &c. : — 
Lysianassa 2 dumosa, Haugesund, in Norway, p. 96. 
Amhasia. Ilypostome very convex and prominent j maxillae of first 
pair with very small inner lamina j maxillipeds with very large outer lamina j 
saltatory feet of the last pair short, with much shorter inner branch j caudal 
appendage short, cleft. A. danielsseni, Norway, pp. 97 & 98. 
Ichnopus minutus, Ohistiania-fjord, p. 99. 
Socarnes, for Amnyx vahli (Kroyer), = ? J^hippipho7'a, White, pp. 99 & 100. 
Hip)pomedon. Mandibles short, left with small accessory tooth j palpus of 
maxillae of first pair with many short teeth at tip ; maxillipeds short and 
broad j caudal appendage long and deeply cleft. Anonyx holhcelli (Kroyer) 
and Lysianassa abyssi (Goes), from Norway and Greenland, pp. 102 & 103. 
Cyphocaris (Liitken, MS.). Mandibles very short, with a long and very 
broad palpus j palpus of the maxillae of 1st pair with few strong teeth and a 
/ very long bristle at tip ; 1st segment of the body very gibbous, nearly con- 
cealing the head; no 1st epimerum, the 3rd and 4th coalite. C, anonyx 
(Liitken, MS.), Greenland : pp. 103 & 104. 
Aristias. Mandibles elongate, narrow, enlarged at the tip ; maxillae of 1st 
pair very broad. Anonyx tumidus (Kxoyev) = Lysmiassa atcdouiniana (Sp. 
Bate), Greenland, Norway, pp. 106 & 107. 
Anonyx lilljebfyrgi, Norway, p. 109. 
Onisitnus. Hypostome prominent,'mandibles at the tip with a strong tooth 
and a narrow accessory tooth ; maxillae of 1st pair with 2 plumose bristles on 
tip of inner lamina. Anonyx litoralis, plautus, and edwardsi (Kroyer), 
Greenland and Norway pp,. 111-113. 
^ Menigrates. Mandibles very short, with short palpus ; maxillae of 1st pair 
with 2 plumose bristles ; maxillipeds very large and short. Anonyx obtusi- 
frons (Bock), Norway, pp. 113 & 114. 
Orchomena, for Anonyx pinguis (Bock), serratus (Bock) =i edivardsi (Sp. 
Bate), minutus (Kroyer), and goesi, sp. n., Norway, pp. 114-116. 
