438 M. T. Thorell on the Species of the Argulidse. 



y. Pedes parium 1™' et 2*^^ flagello instructi. Stimulus adest. 

 Sipho mandibulas tantum iucludit. (Camulus*, nob.) 



7. A. Nattereri, Hell. 



I. Pedes parium 1""^ et 2"^^ flagello instructi. Stimulus nuUus ? 

 Siplio 1 



8. A. salmini, Kr. 



9. A. chromidis, Kr. 

 10. A. funduli, Kr. 



? 11. A. alosce, Gould. 

 ? 13. A. elongatus, Hell. 



Gen. II. Gyropeltis, Heller (1857). 



Maxillipedes primi paris apice unco forti armati (cotyledonibus 

 nullis). Pedes parium 1-3'" flagello instructi. Stimulus nullus. 

 Sipho mandibulas tantum includit. 



1. G. longicauda, Hell. 



3. G. doradis, Corn. 



• 3. G. Kollari, Hell. 



[?4. G. Lacordairei (Aud.)] 



I. Abgulus, Miiller. 



1. A. purpureus (Risso). 

 See p. 158. 



3. A. giganteus, Lucas. 



^^"S. Argulus giganteus, huca.s, Exploration scientifique de I'Alg^rie; 

 Hist. Nat. d. Animaux Articules, Premiere Partie : Crustaces, (1845) 

 p. 83, pi. 8. fig. 9. 



"A. ovatuS; flavesdens, sub till ter rubro punctatus; testa dilata- 

 tissima, membranacea, utrinque fusco-rubescente unilineata. 

 Long. 11 millim., latit. 7 millim.^' 



Hab. in Mari Mediterraneo, ad oras Africae (Algerise), in Rajce sp. inventus. 

 I have been obliged to present the above diagnosis as Lucas 

 has given it : it is certainly accompanied by a sort of description, 

 but from this we get no further knowledge respecting the ani- 

 mal. The description, which is taken from a dried specimen, is 

 so defective that, were it not that the author expressly says that 

 be observed " de chaque cote de la base du bee, un appendice 

 gros et court termine par une ventouse cni^nYi^ovme/' we should 

 hardly be able to recognize the animal as belonging to the Ar- 

 gulidse. "II ne me reste,'^ says he, "de ce crustace curieux 

 que le test. . . . Les antennes n' existent plus, et les organes de la 

 * Nomen propr. mythol. 



