67. RHODETJS. 279 



G. Achilognathus rhombeus. 



Capoeta rliombea, Schlec/. Faun. Japan. Poiss. p. 205, pi. 100. tig. 6. 

 Aclieiloo^nathus rhombeus, Bleekcr, Ci/pr. Prodr. p. 225 (name only). 

 Paracht'ilognathus rhombeus, Bleeker, Afl. Iclithyol. Cypr. p. 33 

 (name only). 



D. 15-16. A. 12-1 3. L. lat. 37. L. transv. 6/7. 



Barbels minute. The height of the body is two-fifths of the total 

 length (wdthout caudal). The last dorsal ray is opposite to the 

 seventh of the anal fin. Pharyngeal teeth serrated. There are five 

 longitudinal series of scales between the lateral hue and the root of 

 the ventral fin. A narrow bluish band along the side of the body. 



Japan. 



(t. One of the typical specimens. From the Leydcn Museum. 



67. RHODEUS. 

 Rhodeus, Agassiz, Mini. Soc. Hist. Nat. Neuchdt. 1835, i. p. 37. 



Scales of moderate size ; lateral line incomplete, only ou the 

 anterior part of the trunk. Dorsal fin with from nine to twelve 

 branched rays, extending from the ventrals to beyond the origin of 

 the anal. Anal fin rather elongate, with about twelve rays. Mouth 

 subiuferior, small, arched ; lower jaw without labial fold. Barbels 

 none. Gill-rakers ver}- short : pseudobranchiaj. Pharyngeal teeth 

 -5 — 5, compressed, not denticulated, the bevelled surface with a simple 

 groove. 



Male, during the spawning-season, with tubercles on the snout, 

 and the female with a long external urogenital tube. 



Central Europe ; China. 



1. Rhodeus amarus. 



Der Bitterling. La Bouviere. 



Diilunnel, Piches, ii. p. 514, pi. 20. fig. 5. 



Cvprinus amai'us, Block, Fische Deutschl. p. 52, tab. 8. tig. 3 ; Cuv. 

 'c^ Vol x\-ii. p. 79. 



sericeus, Pallas, Zoogr. p. 320. 



Rhodeus amarus, Ar/assiz, Mem. Soc. Sc. Nat. Neuchdtel, i. 1835, 

 p. 37; or in Wiec/ni. Arch. 18.38, p. 78; Nordmann, in Demidoff 

 Voy. Puss. Merid. iii. p. 481 ; Selys-Lony champs, Faun. Beige, 

 p. 201 ; Hechd i^- Kner, Siissicasserf. p. 100. tigs. 52 & 53 ; 

 Krauss, in Wibiemh. ntrw. Jahreshefte, 1858, p. 115; Fritsch, in 

 Lotos, Zeitschrift etc. ix. 1859, p. 201 ; Siehold, Siisswasserf. p. 116, 

 pi. 1 ; Dgbows/d, Cypr. Livland. p. 83 ; Jeitteles, Fische d. Alarch, 

 ii. 18G4, p. 3 ; Jackel, in Ahhandl. zoo!.- mineral. Vereins z. Regensb. 

 1864, p. 30 ; Blanchard, Pois>:. France, p. 34G. 



D. 12. A. 12. L. lat. 34-38. L. transv. 10-12. Vert. 18/16-17. 

 The height of the body is, in males, rather less than one-third 

 or three-eighths of the total length (without caudal), in females 

 two-fifths, the length of the head a little less than one-fourth. The 

 third suborbital bone is half as wide as the orbit. A bluish-silvery 

 band along the middle of the tail. 



