REPORT ON THE AMPHIPODA. 



253 



" Gammarus Roeselii Geev. 

 " Squilla fliiviatilis, Roesel, III, Tab. C2. 

 " Cancer Inrusta, L., Sulzer, Insect., fig. 



152. 

 " Crevettes des ruisseaiu; Gboffeoy, Insect. 



II, pag. 667, Tab. 21, fig. 6. 

 " Gmnmarellus pulex, Heebst, Krabben und 



Krebse, II, pag. 132, Tab. 36, fig. 4, 5. 

 " Gammaru-i pulex, Latreille, Hist, natur. 



des Crust, et des Ins., VI, pag. 316, Tab. 



57, fig. 1. 

 " Gaiviaarus Roeselii, Gervais, 1. 1. 

 " Gammarus imle.i-, Kocb, libr. 1. Heft. 36. 



• Taf. 21. 

 " Gammarus Roeselii, Hosius, 1.1." 

 (In reference to this list he notes that Sulzer's 



and Geoffrey's figures are copied from 



Roesel's figure.) 



" Gammarus pulex 



" Krehsfurmvjer Wassencurm, Frisch, Ins. 

 VII, p. 26, Tab. 18. 



" Sijuilla pulex, de Geee, M^moires, VII, 

 p. 525, Tab. 33 (excl. synon.). 



" Gammarus pulex, Late., Regne anira. IV, 

 p. 120 (excl. citat. Linnceana). 



" Gammarus pulex, Desmarest, Consid., p. 

 266, Tab. 45, fig. 8, 8a (excl. synon.). 



" Gammarus piulex, Zenker, Comment, fig. 

 A, C seqq. (excl. synon.). 



" Gammarus pulex, Gervais, Ann. des Sc. 

 nat., 2nie serie, IV, p. 128. 



" Gammarus fluriatilis et 2mlex, Milne Ed- 

 wards, Crust. Ill, p. 45 et 48 (pro 

 parte et excl. synon. ). 



" Gammarus fiuviatilis, Milne Edwards, 

 Cuv. Regne anim., ed. ill.. Crust., Tab. 

 60, fig. 1. 



" Gammarus fossarum, Koch, Deutschl. 

 Crust., Arachn., und Myriap., Heft. 5, 

 Taf. 1. 



" Gammarus fucialilis, Zaddach, Prodromus 

 synops. Crust. Pruss. p. 6. 



" Gammarus pulex, Hosius, Wiegm. Arch. 

 1850, 1, p. 233. 



" Ganrmartcs aquatieus, Leach, Linn. Trans. 

 XL 359.?" 



Zenker's varieties of Gammarus pulex, lomjirauJatus and hreriraudahis, Burgersdijk says he has 

 found mixed together (promiscue). After giving his reasons in full for the synonymy to 

 Gammarus pulex, he adds, " Neque Linn^um neque Fabricium citavi, quia plures species 

 confundebant, sic in LiNNiEi Syst. Nat. Ed. XII, Cancer pulex, teste synonymia, continet 

 Gammarum Roeselii, Gammarmn hunc jmlicem, et Orchesfix speciem ; Gammarus Roeselii 

 etiam sub nomine Caneris locustx militat ; in Fabkicii Ent. Syst. II, pag. 516 sub 

 Gammaro locusta et puliee similis est confusio." From want of materials he refrains from 

 discussing Gammarus pmteanus, Koch, called by Gervais Gammarus pndex minutus, and 

 concludes the subject with the remark, "si tribus hisce speciebus, G. Roeselii, pulici, 

 puteaiio additur G. amlulans Fe. Muller (Wiegm. Arch. 1846, I, pag. 296), nuUa omissa 

 erit 6 speciebus aquae dulcis, qua3 hucusque in Europa repertae sunt." Here however he 

 reckons without the Gammarus (Nipliargus) puwjens from the warm springs in Italy, of 

 which we find notice in Ray. 



A short chapter is given on Gammarus locusta, for which he cites as authorities Leach, Desmarest, 

 Kri-iyor, !Milne-Edwards and Zaddach. He thinks that Guerin's figure in the Iconographie, 

 Crust. Tab. 26, probably represents locusta, but points out that the upper antenns in fig. 

 7 are shorter, in fig. 7a much longer, than the lower. Nor does he include in the synonymy 

 Montagu's Cancer (Gammarus) locusta, since it has the upj^cr antennaj much shorter than the 

 lower. 



