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



lieit dieses Beines aiicli in der Beschreibung wenig Gewicht gelegt, obschon docb die 

 Diagnosen von Boeck und die Bescbreibungen von Bruzelius genugsam beweisen, wie 

 dasselbe fast fiir alle Ampelisca-Arten gute speoifisclie Merkmale darbietet ; dafur ist die 

 Bewaffnung des 6. Beines, Fig. lb, vorziiglich detaillirt dargestellt, nur Scliade, dass darin 

 fast alle librigen Arten bis auf geringe Dimensionsverbaltnisse genau iibereinstimmen. 

 Spracbe der Fundort nicht fiir Kroyer's Ampelisca Eschrichti, so kcinute man nach dei- 

 Abbildung unbedenklich auf die miinnliche Form von macrocephala scbliessen. Die 

 sexuellen Unterscbiede der Anipeliscinen, liber welche der Verfasser kurzweg als ' nicbt 

 bekannt ' binweggeht, siud von Lilljeborg und Bkuzelius fiir maorocepbala, laevigata und 

 icquioornis ganz bestimmt angegeben." Buchholz says that his specimens were collected 

 " zwei im Germania-Hafen, ein kleineres von Sabine-Insel 10 Faden." 



1858- Chenu and Desmarest, E. 

 1874. 



L'Encyclopedie d'liLstoire naturelle. Crustaces — MoUusques — Zoophytes. Paris, 



1858. Table Alphabetique des noms vulgaires et scientifiques de tous les sujets 



decrits et figures dans cette encyclopedie. Crustacds, MoUusques et Zoophytes. 



Paris 1874. 



In this work, which should rather have been mentioned under the earlier date, the Crustacea 

 probably, and the Alphabetical Table certainly, should be ascribed to Desmarest alone. 

 Accepting the " Edriojihthalmes, Leach " as deuxieme legion of the " Crustaces maxilles, 

 Edwards," he makes the "Amphipodes, Latreille," the premier ordre, p. 46. All the species, 

 he says, are very small, " car on n'en connait pas qui dejjasse une longueur de ,002.'' 

 The " Premiere Famillo, Crevettines, LatreiUe," includes two tribes. The first tribe 

 has twelve genera assigned to it, the fifth being given as Philius, Guerin. Of Gammarus, 

 the tenth, he say.s, "Le type est la Crevette des ruisseaux ou Chevrette {Gammarus fliivia- 

 tilis, Edw.). Longueur, O",©!© a O^jOlS." "Fig. 27. — Crevette des ruisseanx " has a 

 perfectly smooth back ; nevertheless the text says, p. 48, " une esp^ce que Ton confond 

 souvent avec la Crevette des ruisseaux, ayant les memes moeurs, se trouvant dans les mcmes 

 lieux, et n'en differant gufere que parce que son abdomen est lisse, est la Crevette puce 

 {Gammarus pulex, Fabr.)" The second tribe has seven genera, the third being thus 

 given, " Cesapodina, Templeton (C. obdita, trouvee en mer)." 



The " Deuxieme Famille, Hyp^rines, Edwards," includes three tribes, the first being " Hyp- 

 orines grammaroides," with one genus; the second, " Hyperines ordinaires" has thirteen 

 genera, among which it may be noted that Lanceola is kept distinct from Hyperia ; to the 

 seventh " iesfngroBMs, Edw.," L. Fabricia" is assigned as the type; Anchylomei'a is the 

 ninth, and its synonym Hi'eraccmi/x the tenth, while the thirteenth is " Sperchius, Leach," 

 Sperc/nus being, in fact, an obscui-e genus instituted by Eafinesque. The third tribe, 

 "Hypi5rines anomales," receives four genera, the second being given as " Orione, Cocco,' 

 by a substitution of the Italian for the Latin name Orio. 



"The "Deuxieme ordre, Lcemodipodes, LatreiUe" is said to correspond with the "genre 

 Cyame de De Lamarck," and contains two families, the first Caprelliens, with three genera, 

 Oapjrdla-, Leptomcra and Naupridia ; the second Cyamiens, with the one genus, Cyamus. 



In the Alphabetical Table Phlias, Gerapodiiia abdita, Hypirities gammaroides and Lxmodipodes 

 are given correctly; " L. Fabricia" becomes Lestrigune Fabreii." The preface (avis), 

 dated "15 octobre 1858," thinks that the table, like the body of the work, will be "d'un 

 tres-grand secom's pour les recherches des naturalistes et des gens du monde." Yet in 

 1858 no notice had been taken of Dana's researches, and in 1874 no hint is given that 

 carcinology had made any advance in the preceding sixteen years. 



