«60 THE VOYAGE OF H.M.S. CHALLENGER. 



subject of Xo. 58, which Herhst, combining scraps of information after his usual method, 

 thus describes : — 



" 58. Der Hummeraat. Cancer (Gammarellus) homari. 



"Fabric. Spec. Ins. 5n. 7. Astac. antennis posticis bifidis, corporis segmentis dorso subspinosis, 

 Cauda fasciculata, stylis serratis. It. Norioag. Mant. 1. 3S2. 9. Fig, 1-8. 



" StVom Ada Hafn. 10. ikuj. 5. Tali. 2. Cancer dorso carinato serrato. 



" MUller Zool. Dan. 197. 2358. C. macrourus articularis, dorso carinato serrato, spinis caudae 

 bifidis. 



" Grunl. Arksegiansoalc. 



" Bey diesem Krebse habon die Abschnitte des Schwanzes auf dem Eiicken einige schwache 

 Dornen, auch ist er kielftirmig erhohet ; Am Ende stehen Biischel uud gespaltene Dornen. 

 Die hintern Fiihlhorner sind doppelt. ilan findet ihu im Norwegischen Meere." In this 

 passage, " Fig. 1-8," attributed to the Mantissa of Fabricius, no doubt properly belongs to 

 the next reference, as given where that reference is repeated under "Cancer (Gammarellus) 

 arenarius." 



The second family of Garneelasseln " haben einen aus mehreren Gliedern bestehenden Brustschild, 

 griistentheils festsitzende Augen und 7 Paar Fiisse." These appear in the Table of Contents 

 as " Zweyte Familie, mit gegliedertem Eiickenschilde," the generic name Caticer being in 

 tliat table applied to all the species not only of this but of all the other divisions. Pages 

 116-146 contain the "Garneelasseln mit getheiltem oder gegliedertem Riickenschilde," 

 as follows : — 



"61. Der Flaschenkrebs. Cancer (Gammarellus) ampulla," Phipps. 



" 62. Der Sonderling. Cancer (Gammarellus) niigax," Phipps. 



"63. Der Pfutzenkrebs. Cancer (Gammarellus) ^jaZi<c?o«««," 0. Miiller; not an Amphipod. 



"64. Der Poduruskrebs. Cancer (Gammarellus) pofZw?'?**-," Miiller. See Abildgaard, 1789. 



"65. Der Verstiimmelte. Cancer (Gammarellus) ??m<i7?(s," Miiller. See Abildgaard, 1789. 



"66. Der Sumpfkrebs. Cancer {Ctd.iam.axaWws) stugnalis," Linn. Sgd.Nat. 87; not an Amphipod 



" 67. Der Dickfuss. Cancer (Gammarellus) grosdpes," with references " to Lin. Syst. Nat. 80. 

 Astac. muticus," &c.; "Fabric. Spec. Ins. 816. 4- Gammar, longicornis. Iter Norweg. 

 258." Ilantins. L 334. n. 4." " Gro?wv. Zooph. 989. fab. 17. fig. 7." " Pallas Spieileg. 

 Zool. Fasc. 9. 59. tab. 4 fig. 9. Oniscus volutator ; " " Pantopp. It. T. 2 p. 334, Eager, 

 Hopper. ; " and " Fabric. Gen. Ins. Append. Gammarus crassipes." Pantopp. is for 

 Pontoppidan. 



"68. Das Krebschen. Cancer (Gammarellus) m?iceZZi/s," with the references " Fabric. Spec. Lis. 

 516. 3. Gammar. manibus quatuor monodactylis, pedibus sedecim. Mant. I. 334. n. 3," 

 and "Pallas Spieileg. Zool. Fasc. 9. 53. tab. 3. fig. 15, Oniscus canccllus; und in der deutschen 

 Uebersetzung Oniscus muricatus." Steller, he says, calls this Siberian fresh-water species 

 " Squillaflaviatilis ov phryganeafliwii Angara." Dybowski, in 1874, mentions that the form 

 from the river Angara differs from that out of Lake Baikal by having shorter upper antennae 

 and the lateral spines on the fifth segment of the trunk less developed. 



"69. Die Heuschreokengarnale. Cancer (Gammarellus) ZoOTsta," with references to " Fabric. Spec. 

 Ins. 516. 5;" "Mant. I. 334,5;" "Pallas Spieileg. Zool. 9. 56. tab. 4. fig. 7 ;" " Gesner aquatil. 

 894." Upon this species he remarks : " This kind (Gattung) is Bellon's, Monffet's and Gesner's 

 sea-flea, in Ray. hid. Ins. 43, and is reckoned by Linne with the common water-flea (wasser- 

 fioh) of the German rivers among the Krebse. In Linnseus's Syst. Nat. he has attempted 

 to distinguish the two kinds by the number of the feet, and to the species which he calls 

 locnsfa he attributes, including the four gnathopods (Fangfiisse), eighteen feet, a number 

 due probably to some mistake, and thus far not discovered to exist in any single related 

 genus. Still more incorrect are the citations of authors under the same heading of locusta ; 

 for Ecisel's figure T. 3 Tab. 62, here cited, obviously represents C. pulex, as also 



