78 PERCID^. 



14. ASPRO. 



Aspro, Cat. Regne Anim. ; C'uv. 8j- Val. ii. p. 188. 



Body elongated, cylindi-ical ; snout thick, projecting beyond the 

 mouth ; mouth situated at the lower side. Seven branchiostegals. 

 All the teeth vilHform, without canines ; teeth on the palatine 

 bones ; tongue smooth. Two separate dorsals ; anal fin with a 

 single spine. Operculum spiniferous, praeoperculum serrated ; prag- 

 orbital entire. Scales small. 



Rivers of the European Continent. 



1. Aspro vulgaris. 



Asper piseiculus, Rotidel. ii. p. 207 ; Gesiier, pp. 403, 478 ; Aldroi\ v. 



cap. 28 ; Jonst. iii. c. ii. t. 26. f. 18 ; Wilhr/hbi/, p. 294 ; Hag, p. 98 ; 



3Iarsig!>; Danub. iv. pi. 9. f. 2, ?,. pp. 27, 28.' 

 Gobiiis asper, Gesner (ed. Franco/.), f. 162 b. 

 Perca, sp. 3, Artedi, Genera, p. 40. 

 asper, Linn. St/st. i. p. 1309 ; Bloch, t. 107. f. 1, 2 ; Schager, 



Pise. Bavar. Ratisb. Petitas. ; Gronor. Zoophyl. p. 92. no. 303, and 



Sij.'it. ed. Gray, p. 115 ; Hartm. Ichthyol. Helvet. p. 68 ; Shaw, Zoo!. 



iv. p. 551. 

 Dipterodon asper, Lacep. iv. p. 170. 

 Aspro ^•ulgaris, Cur. 8f Val. u. p. 188. pi. 26 ; Cur. Regne Anim. III. 



pi. 0. f. 2 ; Nordmann in Dcmidoff^s Voy. Ru.ss. Merid., Pois.s.'p. 



I 11-12 11-12 



Back brownish, sides with a yellowish cast, four or five dark 

 transverse bands. 

 Rhone ; Danube. 



a. Adult. Danube. 



b. Adult. Switzerland. Presented by Prof. Agassiz. 



2. Aspro zingel. 



Gesner, Partdip. p. 19 ; Maraiiili, Danub. iv. pi. 9. f. 3 ; Klein, Hist. 



Pise. V. p. 28. 

 Perca zingel, Linn. i. p. 1310 ; Sclifpffer, I. c. ; Bloch, t. 106 ; Meidin- 



ger, Pise. Austr. t. 4. 

 Aspro zingel, Cuv. (^- Val. ii. p. 194. 



D- 13-15 1 ^„. A. -^3. L.lat.95. L. transv. jX_. 



Back greenish brown, sides with a yellowish ca.st ; irregularly 

 spotted and marbled with dark brown, across the back four more or 

 less conspicuous bands. 



Danube. 



a. Large specimen. Europe. Presented by the Zoological Society. 

 With the foi-mula : D. 15 1 -i . A. I. 



