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



of Colomastix imsilla 5 , Grube, "from Cratijjpus tenuipes consists in the form of the first 

 pair of gnathopoda, which in ' Colomastix terminate in several curved spines, whereas in 

 Cratippus it is scarcely subchelate.' Even this distinction as suggested by Prof. Grube, 

 may be only of sexual importance ; and we think it insufficient to warrant the formation of 

 a new genus." It may be observed that Colomastix was not instituted in 1864, but in 

 1861, and therefore takes precedence of Spence Bate's Cratippus. 

 On Icridium fuscuvi, Grube, Spence Bate observes : — " There is a slight discrepancy between 

 Prof. Grube's excellent figures and the description. First, the telson is undoubtedly 

 present ; and since the ante- and peniiltimate pairs of pleopoda are attached to one somite, 

 we must rather consider that the two somites are fused into one than that one is wanting. 

 We therefore perceive that one, instead of two somites, only is wanting ; but it is contrary 

 to previous observation that this deterioration takes place in the anterior portion of the 

 pleon instead of the posterior; for undoubtedly one of the anterior pairs of pleopoda is the 

 missing pair." 



1835. Costa, Achille. 



Sopra una specie mediterranea del genere Lestrigonus. {letta nella tornata 

 del di 14.febbrajo 1865). Rendiconto dell' Accademia deUe scienze fisiche e mate- 

 matiche. Anno IV. Napoli, 1865. p. 34. 



He mentions " Lestrigomis i?'a6nm " (MOne-Ed wards) (no doubt meaning Lestrigonus Fabreii), 

 from the Indian Ocean, Lestrigonus ruliescens (Dana), from the Pacific, Lestrigonus exulans, 

 from Chili, as the earliest known members of the genus, followed by "-Lestrigonus 

 Kinahani," Spence Bate, from the British waters. To this he considers a form recently 

 taken in the Gulf of Naples upon a Medusa to be closely allied. The distinguishing 

 characters he takes from the proportions of the upper compared with the lower antennae, 

 and from the form of the uropods. He thus describes the species : — " Lestrigonus mediter- 

 raneus, nob : — L. antennis superis inferiorihus pjaidlum brevioribus ; pedibus spuriis quarti 

 et quinti segmenti abdominnlis stijlis lanceolatis, externo parum longiore, in margine interno 

 toto mimite dentato-serrato ; in margine externo integro ; stylo interno margine utroque 

 integerrimo ; fusco-rufus, antennis, pedibus (articulo primo excepto) caudaque albidis. 

 Longit. millim. 5." 



1865. Goes, Axel Theodor, born 1835 (Hj. Theel). 



Crustacea amphipoda maris Spetsbergiam alluentis, cum speciebus aliis arcticis 

 enumerat A. Goes. Tab. XXXVI.- XLI. [Acad. Scient. Suecise propos. die .XL 

 Octobris 1865]. Ofversigt. af K. Vet. Akademiens Forhandlingar. 1865. 

 pp. 1-20 (517-536). 



From this brief but learned work notes will be quoted under the numbers which Goes attaches 



to most of the species he mentions. 

 He begins with the Gammaridas : 



1. Pontoporeia femorata, Kroyer. "Forma minor, depauperata = P. furcigera, Bruzel." 

 Opis typica, Kroyer, Nat. Tidsskr. 2. R. 11, 46, " = Opis Eschrichti, Keoy., Nat. Tidsskr. I. R. 



IV, 149." This is now called Opisa eschrichti. 



