CRUSTACEANS 



[n recent years it has been found both in Devon and Sussex. Its rostrum is nearly as long as the 

 peduncle of the second antennae, instead of being much shorter as in M. rostrata, or decidedly 

 longer as in M. tenuirostris. Whether Hyas coarctata was obtained by Leach first from Scottish or 

 Devonian waters cannot certainly be determined. The order in which he gives his localities is 

 Firth of Forth, Plymouth Sound, and Salcombe.' Since the Hyades were feminine stars, the name 

 of this species must by rule be H. coarctata^ but whether its companion should be H. araneus or 

 H. aranea depends on a point which only a necromancer can decide, namely, whether Linnaeus in 

 calling it Cancer araneus was minded to use araneus as an adjective or as a substantive. In the 

 former case it must be altered into agreement with the new generic name, but in the latter it should 

 remain unchanged. Mamaia squinado, for the number of organisms that have been found settled or 

 roaming about upon its back, might almost be described as a common lodging house. Adam White 

 in his Popular History of British Crustacea^ quotes at great length, from Glaucus, or The Wonders of 

 the Shore, Charles Kingsley's vivacious account of this creature, so accommodating, so ungainly, so 

 truly serviceable even to mankind. White also borrows Gosse's description of the exuviation or 

 process of sloughing, which he had observed at Ilfracombe in 1852, in the case of a large spider crab. 

 Gosse did not observe ' any of the struggling that is sometimes spoken of; it seemed to be a very easy 

 and simple matter. The new integuments were perfected, though soft, before the old were thrown 

 off, and the immediate cause of the separation of the crust appears to be the sudden growth of the 

 animal within, forcing asunder the upper and lower crusts at the posterior margin ; then the pulling 

 out of the limbs presents no more difficulty than what depends on the enfeebled condition of the 

 muscular energy.' On this, however, it must be remarked that the spider crabs are without the 

 great distal distension of the claws which makes the act of * casting ' hazardous and probably more 

 or less painful for the great eatable crab and the common lobster. 



In the tribe Oxystomata, Ebalia tumefacta, though first described and figured by Montagu, was 

 not first taken in Devonshire. That distinction belongs to E. cranchii, of which Leach tells us, 

 ' this species was discovered by that enterprising naturalist, Mr. J. Cranch (whose death in the late 

 expedition to Congo has been so much lamented by naturalists), in the Sound of Plymouth, where 

 Mr. C. Prideaux has likewise observed it, in considerable plenty, and has supplied my collection with 

 a complete series.'* 



Order MACRURA 



Division Macrura anomala 



Tribe Paguridea 



Family Paguridae 



Eupagurus bernhardus (Linn.). Cancer 6., Linn. ; 

 Jstacui b., de Gear, Pennant ; Pagurus b., Fabri- 

 cius, Leach, Bell ; Eupagftrus b., Brandt ; 

 Pagurus strebhnyx. Leach 



— prideaux (Leach). Pagurus prideaux. Leach ; P. 



pridauxii, Milne-Edwards ; P. prideauxii, Bell 



— cuanensis (W. Thompson). Pagurus c, Thomp- 



son, Bell 



— sculptimanus (Lucas). Pagurus forbesii, Bell ; 



? Anapagurusf., Bouvier 

 Anapagurus laevis (W. Thompson). Pagtirus I., 

 Thompson, Bell 



— hyndmanni (W. Thompson). P<j^ar«w -5., Thomp- 



son, Bell, Parfitt 

 Diogenes pugilator (Roux). Pagiirus p. Roux ; 

 Diogenes varians, Costa ; Pagurus dillwynii, Bate 



Tribe Galatheidea 



Family Porcellanidae 



Porcellana longicornis (Linn.). Cancer I., (Linn.) ; 

 Porcelkna /., Leach, Moore. Minute porcelam 

 crab (BeU) 



— platycheles (Pennant). Hairy porcelam crab 



(Bell) 



1 tram. Linn. Soc. Lond. xi, 329. ' Op. cit. p. 24. 



8 Malac. Pod. Brit, text to pi. xxv, figs. 7-11 (i April, 1S17). 



Order MACRURA {continued) 



Division Macrura anomala {continued) 



Tribe Galatheidea {continued) 



Family Galatheidae 



Galathea strigosa (Linn.). Cancer strigpsus, Linn. ; 

 Galathea strigosa, Fabricius, Leach, Bell ; G. 

 spinigera. Leach ; * Galatea s., Leach 



— squamifera. Leach, G. /.' -|- G. Fabricii, Leach ; 



Galatea F.,^ Leach ; Galatea digitidistans, Bate 



— dispersa, Bate ' 



— intermedia, Lilljeborg. G. squamifera (partly), 



Leach ; G. intermedia, Lilljeborg, Norman ' 

 Munida rugosa (Fabricius). Pagurus rugosus, Fabricius ; 

 Astacus Bamffius, Pennant ; Galathea rugosa, 

 Fabricius ; G. Bamfia, Leach ; Munida rugosa. 

 Leach ; M. Rondeletii, Bell 



Division Macrura genuina 



Tribe Thalassinidea 



Family Callianassidae 



Callianassa subterranea (Montagu). Cancer Astacus 

 subterraneus, Montagu ;' Callianassa subterranea. 

 Leach." Burying shrimp (Couch) 



* Op. cit. pi. xxviiiB (i May, 1815). 

 ' Op. cit. pi. xxviiiA (i May, 181;). 

 ' Encycl. Brit. (ed. 5), Suppl. p. 4.19, pi. 21. 



7 Journ. Proc. Linn. Soc. (1858), iii, 3. 



8 Norman and Scott, Crust. 0/ Devon and Corn'W. (1906), p. 1 1. 

 ° Trans. Linn. Soc. Lond. ix, 88, pi. iii, figs i, 2, (1808). 



'" Edinb. Encycl. vii, 400 (1813). 



259 



