475 



Dìscocera Icdicoruis 1851. Dallas, Catalogue p. 78. 



1867. Walker, Catalogue 1. p. 114. 

 1870. Stài, prt. 1. c. (außer Guarayos). 

 1893. Lethierry-Séverin, prt. 1. c. 

 1907. Schouteden, prt. 1. c. 

 1909. Kirkaldy, prt. 1. c. 



Im Berliner Museum 3 9 Q Bahia (Rolle). 

 Verbreitung anscheinend Nordost- und Ostbrasilien. 

 2) Oberseite gelbbraun. Die Medianlinie überPronotum und Scu- 

 tellum fast orangegelb, stark in der Färbung abstechend. 



7. D. laticoriiis Blanch. 



D. to#/co>-;??'s Blanchard 1843 in d'Orbigny, Voyage America me- 

 rid. V. p. 220. VI. PI. 30. fig. 9. 



D. laticonüs Stài 1870. 1. c. prt. (außer Para). 



Im Berliner Museum 1 cj^ Bolivia: Prov. Sara. 750 m (J. Stein- 

 bach). 



Bisher nur aus Bolivien bekannt (Provinz Gruarayos). 



4. The Scales ot the European Cyprinoid Fishes. 



By T. D. A. Cock ereil. 

 :With 3 figs.; 



eiiigeg. 4. Oktober 1910. 



After having spent much time in the study of the scales of Ame- 

 rican Cyprinidae, I became very anxious to investigate those of the old 

 World genera, especially since the latter appeared to be more primitive, 

 and consequently more likely to throw light on the evolution of the 

 sijuamation of the family. It was impossible to obtain the necessary 

 material in America, but my opportunity came when I visited the British 

 Museum, where, thanks to Dr. Boulenger, I had access to the very 

 large collections there preserved. Although I did not obtain materials 

 for any complete survey of the scales of the European Cyprinoids, I 

 secured enough to make it seem worth while to present an account of 

 their characters. I also consulted the work of Fatio, published in 

 1882, in which the scales of the Swiss freshwater fishes are figured. I 

 also, thanks to Dr. A. S. Woodward, was able to examine a consi- 

 derable series of fossil European Cyprinidae. The scales described, un- 

 less the contrary is stated, are all from the vicinity of the lateral line, 

 at about the level of the beginning of the dorsal fin. 



