ANNULOSA. 59 



Tribe 2. Anomura. 



Fam. a. Galatheidae. Galathea. 



Fam. b. Paguridae. Pagurus (Hermit-crabs), Ccenobita, 



Birgus. 



Fam. c. Porcellanidse. Porcellana. 

 Fam. d. Hippidae. Hippa. 

 Fam. e. Lithodidae. I/ithodes (Stone-crabs). 



Tribe 3. Brachyura. 



Fam. a. Kaninidae. Ranina. 



Fam. b. Leucosiadae. Leucosia. 



Fam. c. Calappidae. Calappa. 



Fam. d. Maiidae. Inachus, Mam, Stenorhynchus, Hyas 



(Spider-crabs). 



Fam. e. Cancridse. Cancer, Carpilius. 

 Fam. f. Eriphidae. Pilumnus. 



Fam. g. Portunid83. Portunus, Carcinus (Shore-crabs). 

 Fam. h. Corystidse. Corystes. 

 Fam. i. Telphusidse. Telphusa. 

 Fam. j. Pinnotheridse. Pinnotheres. 

 Fam. k. Gonoplacidas. Gonoplax. 

 Fam. 1. Ocypodidse. Ocypoda (Sand-crabs). 

 Fam. m. Grapsidae. Grapsus. 

 Fam. n. Gecarcinidae. Gecarcinus (Land-crabs). 



(Milne-Edwards, Histoire Naturelle des Crustace's, Paris, 1834-40 ; Dana, 

 Crustacea of the United States Exploring Expedition under Captain Charles 

 Wilkes, Philadelphia, 1852 ; Fritz Muller, Fur Darwin, Leipzig, 1864 

 (Trans, by W. S. Dallas, " Facts and Arguments for Darwin," London, 

 1869); Leach, Malacostraca podophthalma Britannice, London, 1817-21 ; 

 Bell, History of the British Stalk-eyed Crustacea, London, 1853.) 



CLASS II. ARACHNIDA. 



ORDER I. PANTOPODA or PODOSOMATA (Sea-spiders). 



Fam. a. Nymphonidae. Nymphon (fig. 55). 

 Fam. b. Colossendeidae. Colossendeus. 



