402 



TELEOSTE1 



are fused, long parapopbyses bear ribs, and there are lateral longi- 

 tudinal rows of ridged scales. 



FIG. 305. 

 AvMyopgis sjielaeus, De Kay. (From Jordan and Evermann.) 



Family SCOMBRESOCIDAE. The air-bladder may be cellular, the 

 stomach is indistinctly marked, and the maxilla is not excluded. 

 The post-temporal is simple, and the post-clavicle lost. Scales cycloid. 

 Sometimes there is a series of dorsal finlets (Scombresox}. In Hemirhannphus 



Fio. 396. 

 Exocoetus callopterus, Gtlir. (After Giinther.) 



the lower jaw, and in Belone and Scombresox both jaws are prolonged into 

 a slender beak. The pectoral fins acquire a large size, especially in the 

 Flying-Fish Exocoetiis (Fig. 396) ; and the pelvic fins may also be enlarged. 

 It is interesting to compare these modifications with those 'Flying- Fish' 



Fio. 397. 

 llemirhamphus brasiliensis, L. (From Jordan and Evermann.) 



belonging to other groups (Pholidophoridae, Semionotidae, Dactylopteridae ; 

 Abel [1]). Hemirhamphus is sometimes viviparous, and the anal fin may 

 be modified into a copulatory organ, as in Cyprinodonts. 



