15G ASIPIIirODA NOUMALIA. 



■I 



4G. LEUCOTHOE. 



Lcucotlioe, Leach, Ediub. Ennjc. vii. p. 403 ; Traits. Linn. Soc. xi. 

 p. .'{08 (not of Kroyer or Uana). 



Edwards, Hist, des Crust, iii. p. 50 ; Ann. des Sc. Nat. xx. p. 380. 

 Dt'smarcst, Consid. sitr Ics Cnistaces, p. 203. 

 Ifliife, Hist. Brit. Crust, p. 188 ; Cat. Crust, in B. M. 1847 ; Cat. 

 Brit. Crust, in B. 31. I80O. 

 Lycesta, Sarif/ny, 3Iem. sur les Animaux satis Vertbbres, fasc. i. p. 109. 

 pi. 4. f. 2 ; 'E(/>/pt. Crust, pi. 11. f. 2. 



Body long, compressed. Antenna? simple, subequal. Maxillipeds 

 subpediform, iingniculatc. Mandibles having an ai:)pendage. Four 

 anterior pairs of coxae as deep as their respective segments. First 

 pair of gnathopoda having the carpus inferiorly produced to the ex- 

 tremity of the propodos ; propodos slender ; dactylos short : second 

 pair ha^•ing the cai-pus inferiorly produced to half the length of 

 the jJi'opodos ; propodos ovate ; dactylos long. Pereiopoda sub- 

 equa,l, slender. Posterior pair of pleopoda having two long lanceo- 

 late rami. Telson single, squamiform. 



1. Leucothoe articulosa. (Plate XXIX. fig. 2.) 



Leiicothoe articulosa, Leach, Edinb. Encijc. vii. p. 403 ; Linn. Trans. 

 xi. p. 358. 



Desmarest, Consid. p. 203. pi. 45. f. 5. 



Edwards, Hist, des Crust, p. 58. 



LiJjeborq, Offers. afKonql. Vet. Akad. Forhatidl. 1855. 



White, 'Hist. Brit.' Crust, p. 188 ; Cat. of Crust, in B. M. 1847 ; 



Cat. Brit. Crust, in B. M. 1850. 

 Spence Bate, Brit. Assoc. Report, 1855 ; Atin. Nat. Hist. Feb. 

 1857. 

 Cancer (Gammarus) articulosus, Montagu, Linn. Trans, vii. p. 70. 



pl. 0. f. 0. 

 Gammarus spinicai-pus, 31>dler, Zool. Dan. iii. p. GO. pl. 119. f. 1-4. 



Cephalon produced into a small down-curved rostnim. Eyes long- 

 ovate, red. Superior antennae one -fourth as long as the body ; 

 peduncle nearly as long again as the flagellum. Inferior antenna? 

 somewhat shorter and more slender than the superior ; peduncle 

 longer than the peduncle of the superior ; flageUum not longer 

 than the last joint of the peduncle. First pair of gnathopoda as 

 long as the second : second paii' of gnathopoda having the pro- 

 podos ovate ; palm receding, convex, entire. Pereiopoda simple. 

 Penultimate pair of pleopoda shorter than the antepenultimate ; 

 ultimate pair not reacliing beyond the antepenultimate. Telson 

 long, narrow, convex above, lanceolate. Colour flesh tint. 



Length |- of an inch. 



Hah. Coast oi 'Devon{Montagu) ; Plj-mouth Sound and Oxwich Bay 

 (C. S. B.) : Polpcrro (Mr. Loughrrn); Moray Frith (Bev. G. Gordon) ; 

 Kullaberg, Scania (Liljeborg). 



