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



It is referred " to the order Amphipoda — Normalia and to the division. Ganvmaridx among some 

 of the natatorial forms of which occur limbs not unlike the fossil before us." It is therefore 

 named " Necrogammarus Salweyi, after its discoverer." What forms among the Gammaridse 

 are here intended it is not easy to guess. The appendage as figured is more suggestive of 

 an antenna or limb of an Isopod than of any form with which I am acquainted among the 

 limbs of the Gammaridae or any other division of the Amphipoda Gammarina. The 

 combination of a transverse first "(2)" joint with a second "(3)," of great relative size, 

 articulated to the middle of it, is, I should say, quite unknown in the group, and almost 

 impossible as an ancestral character. 



1872. BoECK, Axel. 



Bidrag til Californiens Ampliipodefauna. Sserskilt Aftryk af Forliandlinger i 

 Videnskabs-Selskabet i Christiania Aar 1871. Cliristiania 1872. pp. 32-51. 



The species described are Caprella caUfornica, StimTpson = 1 1 Caprella linearis, see Mayer, 

 Caprelliden, p. 79; Caprella verrucosa, A. Boeck = 1 CapreZ?a acanthi/era, Leach, juv., 

 see Mayer, Capr., p. 82 ; Erichthonius rapax, Stimpson, which Boeck transfers (erroneously) 

 to the genus Cerapus; Podocerus californicus, A. Boeck ; " Amphithoe Stimpsoni," A. Boeck ; 

 " Paramphithoii Bairdi," A. Boeck, and " Metopa EsmarJa," A. Boeck. An explicatio tabulae 

 concludes the paper, but unfortunately the plate to which the explanation refers never 

 appeared. The report of the Society's meetings during 1871 states, under March 10th, 

 p. 532, that " A. Boeck indleverede Tegninger af 6 nye Arter Amphipoder, som Esmark 

 havde sendt ham fra CaHfornien, og fremsatte nogle Bemerkninger om Amphipodernes 

 Udbredelse og Udseende i de forskjellige Egne af Jorden." If the drawings are still in 

 existence, it is very desirable that they should be published. 



1872. Boeck, Axel. 



De Skandinaviske og Arktiske Amphijioder, beskrevne af Axel Boeck. Forste 

 Hefte. (Med 7 Kobberstukne Tavler.) Cliristiania, 1872. pp. 1-160. 



This, and the succeeding volume published in 1876, constitute a work of vast labour and 

 research, of foremost importance to the student of the Amphipoda. The introductory part 

 contains, first, a general account of the bodily structure in this group, dealing chiefly with 

 the mouth-organs, on which Axel Boeck laid special sytematic weight ; secondly, an 

 alphabetical list of nearly three hundred authors with the titles of their works relating to 

 the Amphipoda, down to the year 1870 ; and thirdly, a chronological review of the 

 development of this branch of natural history from Aristotle down to the year 1855. It 

 winds up with an article on the geographical distribution of the Amphipoda, and an account 

 of various systems, including the author's own, which have been proposed for the 

 classification of this group. 



It is to be regretted that this ingenious author should have in some cases thought it necessary to 

 ground generic distinctions on very minute differences ; and it sometimes detracts from the 

 pleasure and facility of consulting his accurate plates, that many of the figures are 

 exceedingly small, and that not unfrequently the parts of animals in diflerent genera are 

 represented in embarrassing confusion on the same plate. Most of all it is to be regretted 

 that by his early death this author was prevented, not only from putting the last touches 

 and corrections to his almost completed work, but from further pursuing a study in which 

 there is so much still to be done, and in which he was so eminent a master. 



