424 EEV. T. E. E. STEBBING ON AMPHIPODA FROM 



The generic name is given in honour of the late Axel Boeck, a distinguished 

 carcinologist. 



The siDBcies assigned to this genus are AxeJhoeckia sjnnosa (Sars), 189 i, from the 

 Caspian Sea, and Axelboeckia Carpenterii (Dyhowsky), 1874, from Lake Baikal. 



Brachturoptjs, n. g. 



With median rostrate carina. Fourth side-plate with projecting tooth. Pirst antennae 

 much the longer, with long, accessory flagellum. First and second gnathopods similar, 

 subchelate. Last three perteopods elongate. First and second uropods elongate, third 

 rudimentary, with very iinequal rami. Telson apically emarginate. 



The generic name alludes to the shortness of the third uropods. 



The species included are Brachyuropns Greioingldi (Dyhowsky), 1874, and Brachy- 

 uropus Beichertii (Dyhowsky), 1874, hoth from Lake Baikal. 



Gen. Brandtia Bate, 1862. 



In addition to the type-species Brandtia latissima (Gerstfeldt), 1858, there may be 



referred to this genus : — 2. B. lata (Dyhowsky), 1874 ; 3. B. tuhercnlata (Dyhowsky), 



1874; 4. B. Moratvifzii (Dyhowsky), 1874; 5. B. smaragdina (Dyhowsky), 1874; 6. B. 



fasciata, a new name for Gammarns zehraDyhowsky , 1874, which is distinct from 



G-. zebra Rathke, 1843. All these species occur in Lake Baikal. 



MiCRUEOPUS, n. g. 



Without carime or overarchiug segments. Antenna; short, with subequal peduncles, 

 the first pair usually longer than the second ; accessory flagellum one-jointed. First 

 and second gnathopods with subequal hands. Third lu'opods small or very small ; the 

 rami unequal ; outer ramus usually one-jointed. Telson cleft. 



The generic name refers to the smallness of the third uropods. 



The species referred to this genus are : — 1. Illcruropus puella (Dyhowsky), 1874 ; 

 2. M. inflatus (Dyhowsky), 1874; 3. M. rortex (Dyhowsky), 1874; 4. M. talitroides 

 (Dyhowsky), 1874 ; 5. i¥. Z/^/oraZis (Dyhowsky), 1874 ; 6. Jf. ^Zaier (Dyhowsky), 1874 ; 

 7. M. rugosus (Dyhowsky), 1874; 8. 31. Wahlil (Dyhowsky), 1874; 9. M. Fixsenii 

 (Dyhowsky), 1874; 10. M. perla (Dyhowsky), 1874; 11. M. Khikii (Dyhowsky), 1874; 

 12. M. pachytus (Dyhowsky), 1874. All from Lake Baikal. 



Neoniphaegus, n. g. 



First to fourth side-plates much deeper than those which follow. Eyes weD developed 

 (or wanting). First antennae the longer; accessory flagellum very small, two-jointed. 

 Mouth-parts nearly as in Niphargus (but first maxillae in the type-species said to have 

 six instead of seven spines on the outer plate). First and second gnathopods similar^ 



