.312 THE VOYAGE OF H.M.S. CHALLENGER. 



posterior segments of the pleon, and having the posterior pair of pleopoda unibranched. 

 Telson single." 

 De Kougemont is inclined to unite all these three species under Gammarus puteanus, Koch. 

 The matter perhaps is not yet ripe for final determination. 



1859? Bruzelius, Ragnar Magnus, born 1832. 



Bidrag till kannedomen om skandinaviens Amphipoda Gammaridea. Med 

 Taflorna I. -IV. Till k. vet. akad. inlemnad d. 17 mars 1858. K. Svenska 

 Vetenskaps Akademiens Handlingar, 3:dje Bandet N:o 1. (1859-60). Stockholm, 

 1862. pp. 1-104. 



In a brief notice of earlier classifications, Bruzelius explains that he follows Dana, and divides 

 the Scandinavian Amphipoda Gammaridea into four famihes, Dulichidje, Orchestidae, 

 CorophidcB, and Gammaridse, but defines the latter two differently from Dana. He 

 mentions the writings on the Amphii^oda with which he was acquainted. He then gives a 

 definition and general description of the group. 



In "Familia I. DulichidjE, Dana," he places LsdmatopMlus, n. g., thus defined : — 



" Corpus elongatum, gracile. Antennae longte, superiores flagello appeudiculari destitutae et 

 processui magno frontali aifixK. jSIandibulae palpo triarticulato, maxillae primi paris 

 lamina interna inchoata et tuberculi-formi, palpo biarticulato instructse. Palpus pedum 

 maxillarium e quatuor articulis compositus. Pedes primi secundique paris thoracis manu 

 subcheliformi armati, articulo quiuto manum formante, ungue ex uno tantum articulo 

 constante. Reliqui pedes thoracis fere sequales, elongati, graciles, unguibus validis 

 armati. Pedes abdominales quarti paris elongati, ramis binis styliformibus instructi, pedes 

 quinti paris e singulis articulis constantes." The type species, LeetmatopJiUus fuberculatus, 

 n. s., pi. i. is described. 



In "Familia II. CoEOPHiDiB, Dana," Bruzelius arranges the genera Gorophium, " Erichtonius," 

 Jassa, Podocerus, Autonoe, AmphUhoe. To CorojMum, Latreille, he assigns, 1. Coropihium 

 longicorne, Fabricius, which he describes ; 2. Gorophium crassicorne, n. s., pi. i. fig. 2 ; 

 3. Gorophium affine, n. s. He next describes Erichtonius, as he sjjeUs it, with the type- 

 species difformis, Milne-Edwards, to which he makes "Podocerus LeacMi," Kroyer, a 

 synonym. 



He re-establishes Jassa, Leach, to receive Podocerus capillatus, Eathke ; but Jassa, Leach, had 

 lapsed as a synonym of Podocerus, Leach, and the genus Janassa, under which name 

 Boeck revives Jassa, Bruzelius, is only separated from Podocerus by absurdly trivial 

 distinctions. To Podocerus, Bruzelius assigns 1. anguipes, Kroyer, of which he remarks 

 that Gammarus zehra, Eathke, is in all probability the female; 2. calcaratus, Eathke, 

 which Boeck makes a sjiionym of falcatus, Montagu. 



The new genus Autonoe is thus defined : — 



" Corpus subdepressum, epimeris mediocribus aut parvis. Antennae superiores graciles, flagello 

 proprio multiarticulato et flagello appendiculari instructae. Antennae inferiores non sub- 

 pediformes. Palpus mandibulae triartioulatus, maxillae primi paris biarticulatus et pedum 

 maxillarium e quatuor articulis compositus. Pedes primi secundique paris manibus 

 instructi. Pedes abdominales ultimi paris biramei, ramis styliformibus." 



To this genus Bruzelius assigns, 1. Autonoe p)unctata, n. s., pi. i. fig. 3, which is a synonym of 

 Aora gracilis, Spence Bate ; 2. " Autonoe anomala (Rathke) ?," pi. i. fig. 4, since called 

 Microdeutopus anomalies; 3. Auto7ioe grandimana, n. s. pi. i. fig. 5, which Boeck 

 identifies with Microdeutopus gryllotalpa, Costa, with which Bruzelius himself compares 



