EEPOET ON THE AMPHIPODA. 421 



suchuug der Ostsce im Sommer 1871 auf S. M. Avisodampfer Pommerania nebst 

 jDhysikalischen Beobachtuugen an den Stationen der preussiscben Ostseekiiste, 

 Berlin, 1873. 



On behalf both of those who have to make catalogues of books, and of those who have to consult 

 them, it is much to be wished that short titles should be used to name rather than to 

 describe a work, and that above aU things double title pages should be avoided. 



"IV. Die faunistischen Untersuchungen. A. Die wirbellosen Thiere der Ostsee," pp. 97-144. 

 K. ]\Iobius. 



The Amphipoda are catalogued on pages 117-119, with particulars as to the place of capture, 

 depth, nature of ground, and distribution. Fifteen species are named, beginning with 

 "Caprella linearis L.," and "Leptomera pedata Abildg.," and ending with "Talitrus 

 locusta L." To Puntoporeia femorata, Krpyer, Pontoporeia affinis is made a synonym, with 

 the remark, " Herr Lindstrom schickte mir Exemplare, die er bei Gotland gefangen hatte, 

 mit dem Namen P. femorata zu ; er hat also seinen Speciesnamen affinis selbst 

 zuriickgenommen." To "Orchestia littorea Mont.," the remark is appended, "Der 

 Vorsprung am unteren Eande des 5. Gliedes des 2. Fusspaares ist bei Exemplaren von 

 Stnbbenkammer und Kiel kleiner als bei Exemplaren von Greifswald ; bei Exemplaren von 

 Sylt fehlt er ganz. Im Uebrigen stimmen alle iiberein." To this species "Orchestia 

 Eucliore," Fr. Miiller, is assigned as a synonym. MiiUer's " Orchestia Grijplius " is made 

 synonymous with " Orchestia Deshayesii Savig." In the general observations, Gammarus 

 locusta and Pontoporeia femorata are mentioned among those species which occur in the 

 greatest numbers. Gammarus loacsta was occasionally found along with the Temora 

 longicornis which made up the chief part of the contents of the stomachs of herrings. In 

 various other fishes, less Suited for consuming the Temora, Gammarus locusta was found as 

 one of the constituents of the food. 



In the preface, Mobius remarks that " Die Fauna der Ostsee ist ein verkiimmerter Zweig der 

 reichen Fauna des nordatlantischen Oceans und des nbrdlichen Eismeeres." One of the 

 conclusions drawn is that " Die Ostsee enthalt iiberlumpt nur eine Ausicald soldier 

 atlaiitischen und Eismeerthiere, ivelche grosse Temperaturdifferenzen zu eriragen im Stande 

 sind." Such animals are distinguished as eurtjtherm, in opposition to sienotherm animals, 

 which can live only in warm or only in cold water. All Baltic marine animals can live in 

 water of varying saltness, and are therefore said to be eurylialine. In Section " C. Die auf 

 der FahrtnachArendalgefangenen Thiere," on page 153, he mentions, " Caprella linearis L. " ; 

 "Protella phasma Mont."; " Ampelisca Gaimardii Kroy."; " Gammarus longimanus Leach." 



Anliang I. Physikalische und faunistiche Untersuchungen in der Nordsee wuhreud des Sommers 

 1871, von A. Metzger in Hannover, pp. 165-176. 



la this Appendix the Amphipoda are described on pages 173-174. They are fourteen in 

 number. Among them is mentioned "Kroyerea arencma Sp. Bate." This is no doubt 

 Spence Bate's KrOyera arenaria, which Boeck calls Krijyeria arenaria, and identifies with 

 his Pontocrates norvegicus. "Atylus (Dexamine) Vedlomensis Bate and Westwood" was 

 dredged "zwischen Helgoland und Spiekeroog." Atylus falcatus and Siphonoscotes cuspidatus 

 are described as new species, but the descriptions had aheady appeared in 1871. See Note 

 on Metzger under that date. It is here noted that " Lestrigonus Kinahani Bate," given as a 

 separate species in the earlier list, must be referred as the male to "Hyperia Medusarum 

 Mull. ( = Hyp. Galba Montagu)." At page 176 a preliminary list is given of seven species 

 of Amphipoda obtained by the "Pommerania" in the summer of 1872. 



A translation of the paper above-mentioned by Karl Mobius, "On the invertebrate Animals of 

 the Baltic," is given by Dallas in The Annals and IMagazine of Natural Histor}'. Nn. 68. 

 August 1873. Vol. XII. Fourth Series. London, 1873. pp. 81-89. 



