The Scyphophori, Haplomi, and Xenomi 417 
Of the many genera of Peciliide, top-minnows, and kéilli- 
fishes we may mention the following: Cyprinodon is made 
Ls 
Fig. 825.—Mayfish, Fundulus majalis (L.) (male). Woods Hole. 
up of chubby little fishes of eastern America with tricuspid, 
incisor teeth, oviparous and omnivorous. Very similar to 
Be 
Fic. 8326 —Mayfish, Fundulus majalis (female). Woods Hole. 
these but smaller are the species of Lebias in southern Europe. 
Jordanella floride of the Florida everglades is similar, but with 
ak 
(> ercovasie 
i ee 
ay So) 
i 
NY 
Fig. 327.—Top-minnow, Zygonectes notatus (Rafinesque). Eureka Springs, Ark 
the dorsal fin long and its first ray enlarged and spine-like. 
It strongly resembles a young sunfish. Most of the larger forms 
