646 Bulletin 4y, United States National Museum. 



irregular iu position, the back always spotted ; the dark bands often 

 replaced by about 16 shining, silvery, vertical bands, which are narrower 

 than the dark interspaces ; the interspaces broadest behind ; fins plain. 

 Length 3^ inches. Lakes and ponds from Ohio westward to the Missis- 

 sippi Kiver, not found much south of Chicago. (From Lake Menona, 

 near Madison, Wisconsin.) 

 Fmidulns vienoua, Jordan i&CopELANi), Proc. Ac. Nat. Sci. Pliila., 1S77, OS, Catfish River, outlet 



of Lake Menona, Madison, Wisconsin; (Coll. Dr. Hoy); .Ioudan & Gilbert, Synopsis, 



:iH5, 1883. 

 FanJiilnsdiajihiiitiix iiieiKnio, .ToniiAN, JIau. Vert., Ed. V, 85, 1888. 



940. FUNDULUS EXTENSUS, Jordan & Gilbert. 



Head 3f ; depth 5|; eye large, 3i. D. 15; A. 13; scales about 47-12. 

 Body unusually elongate, moderately compressed, the caudal peduncle 

 long, much longer than head. Head slender, not very broad,,, the inter- 

 orbital width 2j iu head. Mouth rather large ; the teeth in a moderate 

 band, the outer considerably enlarged. Dorsal fin rather long, of moder- 

 ate height, its insertion well in front of that of anal, at a point midway 

 between eye and base of caudal; pectoral small, Ij in head; caudal Ig. 

 Coloration, in spirits, plain, somewhat translucent, with no markings 

 anywhere, except traces of some very narrow dark bars on the sides. 

 Fins now plain. This species resembles somewhat Fundulus diaphanus, 

 but it is more elongate. Coast of Lower California, know only from the 

 original types, {extensus, drawn out.) 



Fundulus extensus, Jordan & Gilbekt, Proc. U. S. Nat. JIus., 1882, 355, Cape San Lucas. 

 (Type, No. 30972. Coll. Xantus.) 



941. FUNDULUS ZEBRINUS, Jordan & Gilbert. 



Head 3i to 3f ; depth 4^ to 4f ; eye 4 to 4^ ; interorbital width 2| in 

 head; snout 3f. Branchiostegals 5. D. 14 or 15; A. 13 or 14; scales 

 60-21. Head and body shaped much as in Fumhiliis similis, the snout less 

 elongate. Width of preorbital 6+ in head; eye moderate, li in interor- 

 bital width ; posterior margin of orbit in middle of length of head ; teeth 

 in both jaws iu villiform bands, with the external series much enlarged. 

 Dorsal fin long and rather low, the base longer and the rays higher in 

 males than in females ; origin of dorsal nearly equidistant between snout 

 and margin of caudal, slightly nearer the snout in males, and nearer end 

 of caudal in females ; base of dorsal in males 6 to 6i in total length, the 

 highest dorsal ray about half head; in females the base is 7i in total 

 length; origin of anal opposite that of dorsal in males, behind it in 

 females ; in the latter the anal is sharply augulated, the anterior rays 

 more than thrice the height of the posterior, and more than f length of 

 head. In males the margins of both dorsal and anal fins are evenly 

 rounded, the anal the higher, its rays beset with minute white prickles. 

 Oviduct forming a low sheath along base of anterior half of anal ; pec- 

 torals not reaching base of ventrals, equaling distance from snout to 

 preopercular margin ; ventrals about reaching vent ; caudal truncate, li 

 in head. Scales very small ; no enlarged humeral scale. In males the 

 margins of scales are rough, with minute tubercles. Greenish above, 



