CRUSTACEANS 



Sub-Class MALACOSTRACA 



Order Brachyura. Division Brachyura genuina 



Tribe Cyclometopa (carapace with arched anterior 

 margin) 



Family Xanthidae 



Xantho hydrophilus (Herbst). Cancer h. Herbst ; 

 Xantho rivuhsus, Risso, Milne-Edwards ; X. ri- 

 vulosa. Bell 



— poressa (Olivi) . Cancer p., Olivi ; C. flor'tdus, 



Montagu ; C. incisus. Leach ; Xantho incisa. 



Leach, Bell 

 Xanthias couchii (Couch). Xantho couchii (Bell MS.), 



Couch;' X. tuberculata (Couch MS.), Bell.' 



Xanthodes tuberculatus, Bouvier.' 

 Pilumnus hirtellus (Linn.). Bristly crab ; the furry 



Pilumnus 



Family Portunidae 



Portunus puber (Linn.). The velvet swimming 

 crab 



— depurator (Linn.). The cleanser swimming crab 



'The Flying Crab of fishermen' (Moore) 



— corrugatus (Pennant). The wrinkled swimming 



crab 



— pusillus. Leach. The dwarf swimming crab 



— emarginatus, Leach. P. arctiatus. Leach, is prob- 



ably the same species 



— holsatus, Fabricius. P. marmoreus. Leach, is 



doubtfiilly distinct 



Bathynectes longipes (Risso). Portunus hngipes, Risso, 

 Bell, Parfitt 



Portumnus latipes (Pennant). Cancer lattpes, Pen- 

 nant ; Portumnus variegatus. Leach, Bell ; Platy- 

 onichus latipes, LatreiUe 



— biguttatus (Risso). Portunus b., Risso ; * Platy 



onychus nasutus. Heller.* 

 Polybius henslowii. Leach. Henslow's swimming 



crab. The Nipper crab of fishermen 

 Carcinus maenas (Linn.). The common shore crab 



Family Cancridae 



Cancer pagurus, Linn. The great eatable crab 

 Pirimela denticulata (Montagu). Cancer denticulatus, 



Montagu ° 

 Atelecyclus septemdentatus (Montagu). Cancer Hippa 



septemdentatus, Montagu ; ' Atekcyclus s.. Leach; 



A. heterodon, Leach, Bell. ' Old-man's face 



crab ' of fishermen (Leach) 



Family Corystidae 

 Corystes cassivelaunus (Pennant). The masked crab 



1 Rep. Penzance Nat. Hist. Soc. (1851), p. 13. 



2 Brit. Stalk-eyed Crust, p. 359. 



« Feuille des y ernes Naturalistes, ser, 3, No. 332 (1898). For 

 the change of the preoccupied Xanthodes to Xanthias, see Mis3 

 M. T. Rathbun, Proc. Biol. Soc. fTashington, xi, 165 (1897). 



4 Crustaces de Nice, p. 31, pi. i, fig. 2 (not fig. i as given by 

 Risso himself and others), (1816). 



5 Crust. Sudl. Europa, p. 94 (1863). 



Trans. Linn. Soc. Land, ix, 87, pi. ii, fig. 3 (1808). 

 7Ibid. xi, I, pi. i, fig. I (18 13). 



Sub-Class MALACOSTRACA {continued) 



Order Brachyura {continued) 



Division Brachyura genuina {continued) 



Tribe Catometopa (inter-orbital space or ' front ' 

 bent downwards) 



Family Goneplacidak 



Goneplax rhomboides (Linn.). Cancer angulatus. 

 Pennant ; Ocypoda angulata -f- O. rhomboides, 

 Bosc; Ocypode angulata, Latreille, Leach ; Gone- 

 plax bispinosa. Leach ; Gonoplax b.. Leach ; 

 G. angiilata. Bell 



Family Grapsidae 



Planes minutus (Linn.). Planes linnaeana. Leach, 

 Bell, Parfitt, Sowerby ; Nautilograpsus minutus, 

 Milne-Edwards. The turtle crab (Patrick 

 Browne) 



Family Pinnotheridae 



Pinnotheres pisum (Linn.). Common Pea crab 



(White) 

 — veterum, Bosc. Pinna Pea crab (White) 



Tribe OrrRRHYNCHA (carapace anteriorly narrowed, 

 often forming a ' sharp beak ') 



Family Inachidae 



Inachus dorsettensis (Pennant). Scorpion spider 

 crab (White) 



— dorynchus. Leach. Leach's Spider crab (White) 



— leptochirus. Leach. Slender-armed Spider crab 



(White) 

 Macropodia rostrata (Linn.). Cancer rostratus, Linn.; 

 C. phalanffum. Pennant ; Maia p.. Leach ; 

 Leptopodia^ p.. Leach ; Macropodia p.. Leach ; 

 Stenorynchus p., Milne-Edwards, Bell 



— tenuirostris (Leach). Leptopodia /., Leach ; Macro- 



podia t.. Leach ; Stenorynchus t.. Bell (not 

 Inachus long^rostris, Fabricius) 



— egyptia (Milne-Edwards). Stenorynchus phalan- 



ffum. Audouin ; 5. egyptius, Milne-Edwards ; 

 Macropodia egyptia, Garstang ' 

 Achaeus cranchii, Leach. Cranch's Spider crab 

 (White) 



Family Hyadidae 



Hyas aranea (Linn.). Great Spider crab (White). 

 Harper crab (Sibbald) ; Sea toad (Gordon) '° 



— coarctata. Leach. Contracted crab (White) 

 Blastus tribulus (Linn.). Cancer t., Linn.; I Arc- 



topsis lanata, Lamarck ; Cancer biaculeatus, 

 Montagu ; " Pisa bioculeata. Leach ; P. ^bbsii. 

 Leach, Bell, Parfitt ^ 



— tetraodon (Pennant). Cancer t.. Pennant ; Blas- 



tus t.. Leach ; Pisa t., Leach, Bell 

 Eurynome aspera (Pennant). Cancer asper. Pen- 

 nant ; Eurynome aspera. Leach, Bell 



8 See Rathbun in Proc. Biol. Soc. ffashington, xi, 155 (1897). 



9 jfourn. Mar. Biol. Assoc, ■vn, 254 (1904). 



1° White, Popular Hist.Brit. Crust. (1857), p. 22. 

 ^^ Trans. Linn. Soc. Lond, xi, 2, pi. i, fig. 2. 



255 



