6o 



DISCOVERY REPORTS 



adults; lower jaw projecting; bands of very small conical teeth in both jaws, tapering 

 to nearly a single series posteriorly. 14 or 15 long, slender gill-rakers on lower part 

 of anterior arch. Dorsal VI-VII, I 32-39 ; preceded by a recumbent, anteriorly-directed 

 spine, which is generally more or less embedded under the skin. Anal II, I 34-37. 

 Length of pectoral 1 \ to if in that of head. Silvery, back darker ; an elongate horizontal 

 black blotch on side beneath the pectoral fin. 



Hob. Coasts of southern Brazil, Uruguay and Argentina; Patagonian-Falklands 

 region. 



In addition to the above, there is a large specimen in the British Museum collection 

 from Buenos Aires, a very small one from Rio Grande do Sul, and the type of the 

 species (about 220 mm.) from Bahia Blanca, Northern Patagonia. 



Fig. 26. Parana signata. x 



CHEILODACTYLIDAE 



Cheilodactylus bergi, sp.n. 



Chilodactylus macropterus (non Schneider), Perugia, 1891, Ann. Mus. Civ. stor. nat. Genova 

 (2) x [xxx], p. 612; Berg, 1895, Anal. Mus. Nac. B. Aires, iv, p. 60; Lonnberg, 1907, Hamb. 

 Magalh. Sammelr., Fische, p. 7; Ribeiro, 1915, Arch. Mus. Nac. Rio Janeiro, xvn, Chilo- 

 dactylidae, p. 2, fig.; Devincenzi, 1924, Anal. Mus. Montevideo (n) 1 (5), p. 227; Fowler, 

 1927, Proc. Acad. N.S. Philad., lxxviii, p. 272. 



15. iii. 32. Port Madryn, Argentina. Hand line, 2 m.: 1 specimen, 142 mm. 



Depth of body 2§ to nearly 3 in the length, length of head 3^ to 3f. Snout longer 

 than eye, diameter of which is 3! to 4 in length of head and about equal to interorbital 

 width. Scales on upper surface of head not extending forward beyond a line between 

 the nostrils. Maxillary extending to below the nostrils. 14 or 15 gill-rakers on lower 

 part of anterior arch. 50 to 54 scales in a longitudinal series, 5 or 6 from origin of 

 dorsal to lateral line. Dorsal XVII-XVIII 25-26; seventh spine apparently longest, its 

 length about \ that of head. Anal III 14-15 ; second spine stronger and a little longer 

 than third, its length about equal to diameter of eye. Pectoral with 6 simple rays, the 

 uppermost (or sometimes the second) greatly prolonged, much longer than head, 

 extending to above anterior soft-rays of anal. Supra-cleithrum about as broad as eye. 

 Silvery, darker above, with some irregular and indistinct darker patches on head and 

 body ; a large diffuse dark blotch at commencement of lateral line, connected with that 



