EEPORT ON THE AMPHIPODA. 457 



wards mentions, is earlier. SchiiJdte followed with his Niphargus from the caverns, and 

 then new species of Nij'Iianjiiti and even new genera allied to it wore discovered in wells, 

 caverns, and in the sea. " Finally, in 1869 M. F. A. Forel indicated for the first time the 

 existence of l:>lind Gamniaridte (Niphanjufi) in tlie depths of the Lake of Geneva, and in 

 1873 he found the same animals in the Lake of Neuchfitel." 



After mentioning the different species belonging to Niphargus and its synonym Eriopjis, and the 

 Crangony.r siMerraneiis of Sp. Bate, he reviews the work of de Rougemont, with whose 

 conclusions he is unable to agree. He has himself found forms agreeing with none of the 

 six described by de Rougemont. One of these, from tlie Lake of Geneva, he calls 

 " Niphargus pideauus, Koch, var. Forelii "; the other from a well at Onex, in the environs 

 of Geneva, he calls Niphargus puteanus, var. onesieiisis. In the species of Niphargus he 

 has examined, he has " been unable to perceive the least trace of eyes or even of a deposit of 

 pigment." 



He minutely describes, and gives the name of sensitive capsules to, the very small organs on the 

 dorsal parts of the segments already noticed by de la Valette. These he finds also along 

 the anterior margin of the head and on the first two joints of the peduncle of the superior 

 antennae. On the autennas lie enumerates sensitive seta.', olfactory rylinders, sensitive 

 rapsules, olfactory sefee, and hyaline bacilli. The last he describes ; he says that they 

 "perfectly resemble those figured by Sars upon the joints of the outer branch of the 

 superior antennse of Mysis orulata. He thinks that Jarschinski may refer to them in his 

 paper (in Russian) On the Leydigian organs of the antennae of the Crustacea Amphipoda, 

 1868. 



As to the idea of practically making (iaiumarus pjulex one and the same species with those 

 assigned to Crangonyx and Nipjhargus, he points out that, "in the Gatiunari proper the 

 last pair of saltatory feet are biramose ; Gainriiarus pndex even has the two branches nearly 

 equal. The Niphargi have these branches very unequal, but both of them still exist. In 

 Crangonyx, on the contrary, there is only a single branch." Also the telson " is double 

 in Gainmarus, of a single piece but deeply cleft in Niphargus, and completely entire in 

 Crangonyx." He believes that Nip)Uargus is an ancient genus descended from a form now 

 extinct. 



1876. Maitland, R. T. 



Determinatie der dieren beschreven en afgebeeld in de werken van Job Baster 

 en Maetinus Slabber. Tijdschrift der Nederlandsclie Dierkundige Vereeniging. 

 Tweede Deel. 'S Gravenhage & Rotterdam, 1876. pp. 7-15. 



For Easter's work he gives in I'^ Deel, " Tab. IV. Fig. II. Caprella linearis, Latr.," in 11" Deel, 

 "Tab. Ill, Fig. VII. VIIL Orchestes littorea. Leach." For Martinus Slabber, he gives 

 "Tab. X, Fig. 1. 2. Leptomera pedata. Mull.," and "Tab. XI, Fig. 3. 4. Pterygocera 

 arenaria. Latr. (door v. d. Hoeven de soort ongedetermineerd gelaten)." See Notes on 

 Baster, 1759, 1762, and Slabber, 1769. 



1876. Martens, Eduard von. 



Crustacea. The Zoological Record for 1874; being volume eleventh of the 



Record of Zoological Literature. London, m.dccc.lxxvi. pp. 199-220. 



(ZOOL. CHALL. EXP. — PART LXVII. 1887.) XxX 58 



