274 PATAGONIAN EXPEDITIONS: ZOOLOGY. 



c. Length of head 5 (young) to 6J (adult) in the length; depth 5|-io; snout a 



little longer than eye (in the adult), smaller than interorbital ; origin of ventral 



equidistant from tip of snout and base of caudal ; depth of caudal peduncle J to 2 



in its length ; upper parts of head and body finely punctate with blackish and spotted 



or marbled with dark purplish. Recorded specimens 55— 170 mm. 16. attemiatus. 



cc. Length of head 'J-'j\ (young) in the length ; depth 10-12 ; snout a little shorter 



than eye, less than interorbital ; origin of ventrals nearer tip of snout than base of 



caudal ; caudal peduncle 2\ times as long as deep; some small blackish spots on 



the head and on the upper part of the body ; a line of black dots along the middle 



of the side and one at the base of each of the unpaired fins. Recorded specimens 



reaching a length of 5 5 mm. gracillimus} 



bb. Origin of ventral nearer to base of caudal than to tip of snout. 



d. Maxillary extending to below anterior margin of eye or slightly beyond ; depth 



6-8 ; head 4i-S| ; snout nearly as long as eye which is 3^-4^ in the head ; 

 interorbital 2|— 3 ; jaws equal ; origin of ventral equidistant from middle of pec- 

 toral and origin of anal ; caudal peduncle il— 2 times as long as deep ; numerous 

 irregular blackish spots. Recorded specimens 73-120 mm. 17. maailatns. 



aa. Eight or nine branchiostegals ; caudal truncate or emarginate ; origin of anal behind that of 

 dorsal ; origin of ventral considerably nearer to base of caudal than to tip of snout ; depth 

 5-6; head 4^-4!; snout longer than eye, which is 5-7! in head; interorbital 2|-2| ; 

 jaws equal ; maxillary extending beyond origin — frequently to middle of eye ; caudal 

 peduncle as long as deep or a little longer ; head, body and fins covered with numerous 

 irregular dark spots. Recorded specimens 49-300 mm. 1 8. platei. 



16. Galaxias attenuatus (Jenyns). 



Only the Patagonian synonymy and bibliography are given. The spe- 

 cies is also found in Tasmania, Australia, New Zealand. 

 Mesites attenuatus Jenyns, Voyage Beagle, Fishes, 121, pi. xxii, fig. 5, 



1842. (Bay Islands, New Zealand.) 

 Galaxias attenuatus Glinther (in part), Cat. Fish. Brit. Mus., VI, 210, 1866 

 (Falkland Islands; Peru?); Giinther, Zool. Coll. H. M. S. Alert, 21, 

 1 88 1 (Puerto Bueno) ; Vaillant, Miss. Scient. Cap Horn, Poiss. C. 19, 

 1888 (Orange Bay) ; Perugia, Ann. Mus. Civico Storia Nat. Genova, 

 (2rt), X, 54, 1 89 1 (Lake and River of Porto Cook) ; Philippi, Verh. 

 Deutsch. Wiss. Ver. Santiago, Chile, III, 21, 1895. Delfin, Catalogo 

 Peces Chile, 33, 1901 (Chiloe) ; Dollo, Voy. Du S. Y. Belgica, pi. x, 



fig- 5- 

 Galaxias niaculatus (non Jenyns) Richardson, Voy. Erebus and Terror, 



75, pi. xvii, figs. 14-117, 1847 (Falkland Islands); Smitt, Bih. 



Svenska Akad. Handl. XXVI, IV, No. 13, 1901, p. 21, pi. ii, figs. 



5-8 (Rio Pescado and Ultima Esperanza). 



' This is undoubtedly the young of attenuatus. 



