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



The parentbetic statement, on p. 453, tliat " the presence of Arctic species [of Amphipoda] in the 

 Swedish and Norwegian seas is very interesting," loses its point by the introduction of the 

 word "seas" through an oversight instead of "lakes." 



The Isopoda axe divided into two tribes, Anisopoda and Euisopoda. The Anisopoda are thus 

 defined : — " Body more or less resembling that of an Ampldpod. Tlie abdomen toith biramoiis 

 sivimming feet (Tanais), which do not function as gills, or with fin-lik^ feet (Anceus)." 



In the "General Part" of the volume, valuable information is to be found under various 

 headings, in regard to organs of vision, nerves, &c. 



« 



1884. D'Ueban, W. S. M. 



Crustacea on the South Coast of Devon. The Zoologist. Ser. 3. Vol. VIII. 

 London, 1884. pp. 151-153. 



The capture of half a dozen species of Amphipods, not new ones, is recorded. 



1884. Faxon, Walter. 



On the so-called Dimorphism in the genus Camharus. From the American 

 Journal of Science, Vol. XXVII. January 1884. pp. 42-44. 



"It appears probable that the two forms of the crayfish are alternating periods in the life of the 

 individual, the 'first form 'being assumed during the pairing season, the 'second form' 

 during the intervals between the pairing seasons." Mr. Faxon suggests that this curious 

 discovery may explain the existence of two forms of the male in the genera Tanais and 

 Orchestia pointed out by Fritz Miiller (Fiir Darwin). It is obvious that, if the phenomenon 

 in question should prove to be of frequent occurrence among the Crustacea, it may make 

 necessary an extended revision of specific names. 



1884. HOEK, P. P. C. 



Schaaldieren van de Oosterschelde. Crustacds de I'Eseaut de I'Est. Overdruk 

 uit: Tijdschr. Ned. Dierk. Vereen., Supplementdeel I. Afl. 2. 1884. 31 pages. 



This paper, in Dutch and French, records from the locality mentioned in the title fifteen species 

 of Amphipoda, none of them new. Among them was Atylus vedlomensis, Bate and "West- 

 wood; (also recorded from Guernsey, see Note on Koehler, 1885). 



1884. KnsrosLEY, John Sterling. 



The Standard Natural History. Vol. II. Crustacea and Insects. Boston, 1884. 



Crustacea are Class I. of the Arthropoda. The Edriophthalmia are Subclass IV. of the 

 Crustacea, and embrace two orders, Isopoda and Amphipoda. The Amphipoda, pages 

 72-77, include two suborders, Lssmodipoda and Amphipoda genuina. The families assigned 

 to the first suborder are the Caprellidce and Cyamidaj, to the second, the Oxycephalidse, 

 Phronimidffi, Hyperidse, Cheluridae, Corophidse, Gammaridse, Orchestidse. 



Species are figured under the following names, but without names of the authors of the species ; 

 fig. 96. Caprella geometrica; fig. 97. Cyamus ceti ; fig. 98. Rhabdosoma batei ; fig. 99. 



