EEPOET ON THE AMPHIPODA. 191 



lamelle memtraneuse semblable k celle fixee prfes de la base des pates precddentes. Portion 

 posterieure de Fabdomen trfes-6troite ■ le sixieme segment, cyliudrique, et termini par un 

 stylet impair aussi long que le corps. Les fausses pates des trois dernieres paii'es tres-greles, 

 tres-longues, et termin^es chacune par deux stylets. Longueur, environ 1 poucc." This 

 under the name Rhahdosoma armafum became the type of the new genus Rhahdosoma, 

 Adams and White, 1848. 



The Ordre des Loemodipodes or Loemipodes is still described as being without mandibular palp. 

 It is divided as usual into two families. The Famille des Caprelliens, ou Loemodipodes 

 filiformcs, contains the following genera and species : — CapreUa, Lamarck, with the species, 

 1, linearis, answering to " Cancer linearis? Lin. Syst. nat.," etc. ; 2. aeuminifera, Leach, 

 pi. 33, fig. 1, including Puce de mer arpenteuse, Queronic ; 3. scaura, Templeton ; 4. nodosa, 

 Templeton ; 5. aeutifrons, for which inaccurately Desmarest is given as the authority, and 

 CapreUa atomos. Leach, as a synonym ; 6. pliasma, Montagu ; the description of which is 

 followed by the remarks that CapreUa tubemdafa, Gu6rin, Iconogr. Crust. PI. 28. fig. 1, 

 resembles the preceding species by the existence of a cephalic horn, but is distinguished by 

 having a great number of blunt tubercles all along the back, and by the form of the legs of 

 the three last pairs, of which the penultimate joint is widened and armed with a large 

 tooth on its inner edge'; " Cap7-eUa mantis, Latreille, K"ouv. Diet. d'Hist. nat.," he says, is 

 very imperfectly kno^vn ; Cancer fiJ if ormis, Linn., Amoen. Acad. t. 6, p. 415, et syst. nat. 

 t. 1, pars 5, p, 2993, probably, he thinks, belongs to this genus. 



" Naupridia," Latreille, with no described species. 



Leptoriiera, Latreille, with the species, 1. pedata, MliUer, and 2. veniricosa, Miiller, which are, 

 as Milne-Edwards suspected, the male and female of the same species properly called 

 Proto ventricosa. That Proto, Leach, is the same as Leptomera is recognised by Milae- 

 Edwards, though he does not give Proto its rightful precedence. 



In the Famille des Loemodipodes ovalaires ou Cyamiens he places the single genus Cyamus, 

 giving Lamarck, instead of Latreille, as the earliest authority for the name. The species he 

 recognises are, 1 . erraticus, Eoussel de Vauztme, in the synonymy of which he erroneously 

 groups together the various names appUed to species of Cyamus in writings earlier than 

 E. de Vauzfeme's treatise ; 2. ovalis, E. de V. ; 3. gracilis, E. de V., with the concluding 

 observation that "le Cyamus Delphini de M. Gu^rin (Iconographie, Crust. PI. 28, fig. 5) 

 parait difi'erer des especes prec6dentes par la brifevet^ des appendices branchiaux, et par la 

 maniere dont les divers anneaux du thorax se touchent lat6ralement." 



184-. Milne-Edwards (Editor). 



Les Crustaces. Le Regne Animal distribue d'apres son organisation, pour servir 

 de base a Thistoire naturelle des animaux, et d'introduction a I'anatomie comparee 

 par Georges Cuvier. Edition accompagnee de planches gravees, . . . par une 

 reunion de disciples de Cuvier. Paris, Fortin, Masson et C*^ Libraires, successeurs 

 de Crochard. (No date is given in the work itself ; I understand from Mr. G. K. 

 Fortescue of the British Museum that it appeared in Uvraisons between 1836 and 

 1849 ; it is sometimes called the Crochard Edition, or the Illustrated Edition.) 



Pages 165-188 refer to the Amphipoda. 



The Amphipoda, pis. 58 to 61, include under "des Grey ziics {Gammarus, Fah.)," P/ironima, 

 Latr. ; Hyptria, Latr. ; Plirosine, Eisso ; Dactylocera, Latr. ; lone, ("mais uniquement 

 d'apres une figure de Montagu, Oniscus tJioracicus, Tmns. linn. soc. ix. iii., 3, 4"): Orchestia, 



