Cumacea: 1. Vaunthompsoniidae, 1. Vauuthoiupsouia 9 



Synopsis of genera: 



iEye present; outer apex of second joint of raaxillipcd 

 3 little or not produced 1. Gen. Vaunthompsonia 

 Eye wanting; outer apex of second joint of maxilli- 

 ped 3 much produced — 2. 

 I Pseudorostral lobes not meeting in front of the 



2 ■ eyelobe 2. Gen. Gaussicuma 



1 Pseudorostral lobes meeting in front of the eyelobe 3. Gen. Bathycuma 



1. Gen. Vaunthompsonia Bate 



1858 Vaunthomjjsonla (Sp. un.: V. cristata), Bate MS. in: Kinahan in: Nat. 

 Hist. Rev., V.5 P. p. 203 ) 1858 Vauntomjysonia, Bate in: J. R. Dublin Soc, v. 2 p. 102 

 1859 Vnunthomsonia, Bate in: Ann. nat. Hist., ser. 3 v. '6 p. 273 | 1863 Vaunthompsonia 

 (part.), A.M.Norman in: Tr. Tyneside Club, v. 5iv p. 271 | 1879 V., G. O. Sars in: 

 Arch. Naturv. Kristian., vA p. 11 | 1887 7., G. 0. Sars in: Rep. Voy. Challenger, «. 19 

 pars 55 p. 22 | 1905 Vauntompsonia, Caiman in: Sci. Invest. Fish. Ireland, 1904 app. 1 

 p. 16 I 1907 v.. Caiman in: Tr. zool. Soc. London, v.l%i p. 29 | 1908 V., Zimmer in: 

 Ergeb. Tiefsee-Bxp., t;. 8 p. 164 ] 1909 V., Zimmer in: Ergeb. Schwed. Sudp.-Exp., r. 6 

 nr^S p. 4 I 1911 Vaunthompsonia, T. Stebbing in: P. Linn. Soc. London, p. 64, 69 | 1912 

 v., T. Stebbing in: P. Linn. Soc. London, p. 16, 78. 



General form not very slender. Pseudorostral lobes nearly meeting in 

 front of the eyelobe. Eye 'developed. Third maxilliped with the lateral apex 

 of the second joint not much or not at all produced. 



4 species. 



Synopsis of species 9 = 



[ Carapace of (young) female not cariuate 1. V. inei'mis 



\ Carapace of female carinate — 2. 



J Carina single, median, straight 3. V. cristata 



\ Carinae paired, submediau, curved 2. V. meridionalis 



Synopsis of species c^: 



First legs reaching more than two joints beyond carapace 3. V. cristata 



First legs reaching little more than one joint beyond carapace 4. V. ai-abiea 



1. V. inermis Zimmer 1909 V. i., Zimmer in: Ergeb. Schwed. Siidp. -Exp., i;. 6 

 nr. 3 p. 4 t. 1 f. 4, 5. 



Near to V. lueridionalis Sars but inferior in size, and carapace 

 without submedian carinae and group of denticles. Eyelobe without denticles. 

 L, 9 with incipient marsupium about 6*5 mm. 



South Georgia, outside Kochtopf Bay. Depth 24 — 52 m. 



2. v. meridionalis 0. Sars 1887 V. m., G. 0. Sars in: Rep. Voy. Challenger, 

 r. 19 pars 55 p. 9, 23 t. 2 f. 1 — 5 \ 1905 Vauntompsonia m., Caiman in: Sci. Invest. Fish. 

 Ireland, 1904 app. 1 p. 17 | 1908 V. m. and Vauntrompsonia (laps.) m., Zimmer in: 

 Ergeb. Tiefsee-Exp., v.8 p. 166 t. 38 f. 34, 45; t. 39 f . 46— 52 1 1909 Vauntompsonia m., 

 Zimmer in: Ergeb. Schwed. Siidp. -Exp., v. 6 nr. 3 p. 4. 



9 . Pseudorostral lobes reaching little beyond the eyelobe, the sinus 

 rather deep, antero-lateral corner acute. Carapace in medio-dorsal line as 

 long as the pedigerous segments, but the serrate lateral margin shorter than 

 that of those segments; behind the large bidenticulate eyelobe the carapace 

 is smooth, denticulate to the rear, between these spaces having a pair of 

 curved denticulate carinae converging backwards. Second pedigerous seg- 

 ment the longest, the last three produced backward in rounded postero- 



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