PISCES. Ill 



Sp. Mormyrus longipinnis RUEPPELL, Mormyrus Caschive HASSELQUIST, It. 

 Palcest. pp. 398 400 ; Mormyrus Geoffroyi VALENC., Centriscus niloticus 

 BL., Sen. Syst. IcJith. Tab. 30, fig. i; Morniyr. oxyrhynchus GEOFFR., 

 Mormyr. kannume FORSK. Descr. Animal, p. 74, GUERIN Iconogr., Poiss. 

 PI. 51, fig. i ; Morm. anguilloides L., SONNINI Voyage en Egypte, PI. 22, 

 fig. i, brain, &c. 



Gonorhynchus GRONOV. (Genus of uncertain position). Mouth 

 edentulous, inferior ; middle cirrus in front of mouth. Small scales 

 covering body and head. Body elongate. Ventral fins somewhat 

 near to tail; dorsal fin over the ventral fins. Branchiostegous 

 membrane with 4 rays. 



Sp. GonorJiynchus Gronovii VALENC., Cyprinus Gonorhynchus L., GRONOV. 

 Zoophyl. Tab. x. fig. i, Cuv. et VAL. Poiss. Xix. PI. 568, from the Cape 

 of Good Hope. Gonorh. abbreviatus SCHLEG. Fauna Japonica, Tab. 103, 



fig. 5- 



There are several blind appendages at the pylorus, nine in Gonorhyn. Gro- 

 notni, according to VALENCIENNES ; there is no swimming-bladder. These 

 peculiarities sufficiently indicate that LINN^US incorrectly united the genus 

 Gonorhynchus with Cyprinus. 



Family XX. Clupeacei. No adipose dorsal fin. Upper jaw 

 composed of small intermaxillary bones and supramaxillary placed 

 at the sides. Body covered with distinct scales, often large. 

 Swimming-bladder furnished with a duct in most. Pyloric append- 

 ages in very many. Pseudobranchise similar to branchiae or none. 

 Inferior pharyngeal bones two. 



This family has a very close affinity with Exoccetus and Hemi- 

 ramphus amongst the Esoces, which is interrupted by the preceding 

 family placed between the two in a linear arrangement. Still these 

 two genera possess in the unpaired inferior pharyngeal bone a very 

 aberrant character. 



See HTRTL Ueber die accessorischen Kiemenorgane der Clupeaceen nebst 

 Bemerlcungen iiber der Darmkanal derselben. Mit 3 Tafeln. Aus dem 

 Xten Bande der math, natur. Classe der Kaiserl. Ale. der Wissensch. be- 

 sonders abgedruckt. Wien, 1855. 



Osteoglossum YANDELLI, Isctmosoma SPIX. Body compressed, 

 covered with large scales. Head naked, with large infraorbital 

 bones covering the cheeks. Eyes at the apex of snout. Gape of 

 mouth large, teeth conical, acute, small in jaws, vomer, palate and 

 tongue. Two cirri at the symphysis of lower jaw. Branchiostegous 

 membrane with 10 15 rays. Dorsal fin remote, beginning behind 

 anal ; anal fin very long, approximate to caudal. 



