fill Al Y 



CRUSTACEA. 



7 



the Paumotus, enlarged two diameters; b, under view of front 

 and mouth ; c, female abdomen ; d, male abdomen of a Tonga- 

 tabu specimen, of similar colour; c, large hand, ibid.; /, tarsus, 

 ibid.; /', under view of extremity of tarsus; g, another variety, 

 from Tahiti ; h, i, abdomen of same variety, male and female. — 

 p. 2G3. 



Fig. 4 a. Tetralia armata, carapax, enlarged ; b, outline of 

 carpus and arm; c, part of hand. — p. 264. 



Fig. 5 a. Quadrella coronata, carapax, enlarged three dia- 

 meters ; b, under view of front ; c, hand, enlarged three dia- 

 meters; d, one of eight posterior legs, ibid. — p. 266. 



Fig. 6 a. Scylla tranquebarica, profile of front, natural size, 

 specimen from the Samoan or Navigator Islands ; b, male abdo- 

 men, natural size. — p. 270. 



Fig. 7 a. Lupa dicantiia, male abdomen, natural size ; b, under 

 view (showing e, the anterior margin of the palate or prselabial 

 plate ; r, r, ridges on palate ; mx, inner branch of maxilliped of 

 first pair; md, mandible) ; c, outer maxilliped. — p. 272. 



Fig. 8. Lupa Sayi, male abdomen, natural size. — p. 273. 



Fig. 9 a. Lupa pubescens, carapax, natural size ; b, hand, en- 

 larged two diameters ; c, under view, showing, e, the epistome ; p, 

 the palate and its medial suture ; p l , suture, which exteriorly, in 

 other species, bends forward towards the epistome to q, and so 

 separates a medial or sternal piece of the palate from an outer or 

 episternal piece (see p. 24) ; p 2 , a suture, forming the outer limit 

 of the episternal piece, this so-called episternal piece, lying be- 

 tween ]? and p*q, and bearing the outer antennas; /, g, the man- 

 dibular segment. — p. 274. 



PLATE 17. 



Fig. 1 a. Amphitrite speciosa, male, enlarged two diameters ; 

 b, abdomen ; c, outer maxilliped ; d, summit of inner branch of 

 maxilliped of first pair. — p. 276. 



Fig. 2a. Amphitrite longispinosa, enlarged three diameters; 



b, male abdomen ; c, outer maxilliped. — p. 277. 



Fig. 3 a. Amphitrite vigilans, part of a male, enlarged two 

 diameters ; b, male abdomen ; c, outer maxilliped ; d, summit 

 of inner branch of maxilliped of first pair. — p. 278. 



Fig. 4 a. Carupa tenuipes, male, enlarged four diameters ; b, 

 under view of part of front, showing base of outer antenna, etc.; 



c, outer maxilliped ; d, male abdomen ; e, arm, under view.— p. 

 279. 



Fig. 5 a. Tiialamita admete, outline of front, under view, 

 showing crest at base of outer antenna ; b, outer view of hand ; c, 

 summit of inner branch of maxilliped of first pair. — p. 281. 



Fig. 6 a. Tiialamita Integra, male, enlarged two diameters ; 

 b, hand, outer view, ibid.; c, outer maxilliped; d, summit of 

 inner branch of maxilliped of first pair. — p. 281. 



Fig. 7 a. Tiialamita crenata, part of front, under view, show- 

 ing base of outer antenna and crest on same ; b, summit of inner 

 branch of maxilliped of first pair. — p. 282. 



Fig. 8 a. Tiialamita spinimana, carapax, natural size ; b, outer 

 view of hand ; c, part of front, under view, showing crest of base 

 of outer antenna. — p. 283. 



Fig. 9 a. Tiialamita crassimana, male, natural size ; b, under 

 view of part of front; c, hand, outer view; d, summit of inner 

 branch of maxilliped of first pair. — p. 284. 



Fig. 10. Ciiarybdis orientalis, part of carapax, natural size. — 



p. 285. 



Fig. 11 a. Charybdis crucifera, outline of carapax of a young 



individual, natural size; b, hand, ibid.; e, summit of inner branch 

 of maxilliped, first pair. — p. 286. 



Fig. 12 a. Ciiarybdis affinis, front, natural size ; b, hand, 

 outer view; c, part of inner branch of maxilliped of first pair. — 

 p. 286. 



Fig. 13. Charybdis ? enlarged four diameters.— p. 287. 



[Dimensions, as given on p. 287, at bottom, four times too large.] 



PLATE 18. 



Fig. 1 a. Lissocarcinus orbicularis, male, enlarged two dia- 

 meters ; b, under view ; c, hand ; d, summit of inner branch of 

 maxilliped of first pair; e, male abdomen. — p. 288. 



Fig. 2 a. Aren^eus cribrarius, under view, enlarged (showing, 

 e, anterior margin of prselabial plate or palate ; mx, the summit 

 of the inner branch of the maxillipeds of the first pair; md, man- 

 dible) ; b, outer maxilliped. — p. 290. 



Fig. 3. Platyonychus purpureus, natural size. — p. 291. 



Fig. 4 a. Acanthocyclus Gayi, outer maxilliped, enlarged ; b, 

 maxilliped of second pair ; c, part of maxilliped of first pair. — 

 p. 295. 



Fig. 5 a. Trichocera oregonensis, natural size ; b, under view 

 of part of front ; c, outer maxilliped; d, maxilliped of second pair; 

 e, maxilliped of first pair; /, hand; g, tarsus. — p. 299. 



Fig. 6 a. Peltarion spinulosum, natural size; b, male abdomen, 

 —p. 304. 



Fig. 7 a. Gomez A serrata, enlarged eight diameters ; b, beak, 

 more enlarged; c, under view. — p. 305. 



Fig. 8 a. Telmessus serratus, part of animal, enlarged two 

 diameters; b, abdomen and sternum. — p. 303. 



PLATE 1 9. 



Fig. 1 a. Kraussia rugulosa, female, enlarged two diameters; b, 

 enlarged view of front ; c, outer maxilliped ; d, hand, enlarged 

 three diameters ; e, tarsus of leg of third pair ; /, female abdomen, 

 enlarged. — p. 302. 



Fig. 2 a. Eucrate crassimanus, male, natural size ; b, abdomen 

 and sternum, ibid.; c, outer maxilliped; d, hand, natural size. — 

 p. 311. 



Fig. 3 a. Cleistostoma Boscii? enlarged three diameters; b, 

 outer maxilliped ; c, hand, enlarged ; d, male abdomen and sternum 

 in part. — p. 313. 



Fig. 4 a. Macroptiialmus pacificus, male, enlarged two dia- 

 meters ; b, abdomen and part of sternum, ibid. ; c, hand, ibid. — p. 

 314. 



Fig. 5 a. Gelasimus nitidus, male, natural size ; b, abdomen 

 and sternum; c, outer view of larger hand of male, natural size; 

 d, inner view, ibid., showing crests on the surface. — p. 316. 



Fig. 6 a. Helcecius cordiformis, natural size ; b, hand, ibid. — 

 p. 320. 



Fig. 7 a. HELffiCius inornatus, male, natural size; b, front, ob- 

 lique under view, enlarged; c, hand, natural size. — p. 321. 



Fig. 8 a. Ocypoda rhombea, male, natural size ; b, abdomen and 

 sternum; c, hand, natural size. — p. 322. 



PLATE 20. 



Fig. la. Ocypoda tallidula, male, natural size; b, hand, en- 

 larged; c, extremity of leg of fourth pair.— p. 324. 



