894 CONTEIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 
The yoniig are produced iu earlj’ summer, when about one-third of an 
inch long.* 
{Ueterandria patritcViH B. & G. Proc. Acad. Nat. Sci. Pliila. 1853, 390; Grd. U. S. 
Mex. Bound. Siirv. Ichtli. 72: Gamhusla speciosa, gracilis Grd. Proc. Acad. Nat. Sci. 
Pbila. 1859, 121 : Heteraudria affinis B. & G. 1. c. 390: Ganibusia humilis and uffiiiis Gthr. 
vi, 335, 336: Heterandria hoJh-oolci Agassiz MSS.; Girard, Proc. Acad. Nat. Sci. Phila. 
1859, 61; Giiiither, vi, 334: Ilaplocliilus mdanops Cope, Proc. Amer. Phil. Soc. Phila. 
1870, 457: Zj/gonectes atrilatns Jor. &, Brayt. Bull. U. S. Nat. Mus. xii, 84, 1878.) 
Pages 345, 34G. Gamhnsia humilis and Gamhusia affinis may be sui)- 
pressed as identical with G. patruelis. 
Page 340. After Gamhusia nohil is add: 
566 (5)- seaailis Grd. 
Brown, sides with dark specks; vertical fins speckled. Ventrals very 
small, not reaching vent; anal rather large. Head 5 in total length. 
D. 9; A. 10. L. inches. Chihuahua Eiver. 
(Girard, Proc. Acad. Nat. Sci. Phila. 1859, 121.) 
Page 347. Under Mollienesia latipinna read: 
“Eye greater than snout, 2 in head. If to 2 in interorbital tvidth.’* 
“Caudal-membrane dark orange, with black dots.” “D. 14 or 15; A. 
8.” 
Page 347. After Mollienesia latipinna add: 
567 (5). M. lincoData (Grd.) J. & G. 
Color of M. latipinna, the sides with five dark half-bars. Eye small, 
3^ to 3^ iu head. Dorsal fin rather small, its rays 13 (rarely 14) in 
number; otherwise essentially as in M. latipinna, of which it may be a 
variety. Marshes and lagoons of Louisiana and Texas. 
(I’oecUia lineolata Grd. U. S. Mex. Bound. Surv. Ichth. 18.59, 70: Limia pceciloides Grd. 
1. c. 70.) 
Page 352. Instead of Usox salnioneus read: 
574. 1']. «iB9Bl>rosiis Kirt. 
The Usox vittatus and E. salmone7<s appear, from Rafinesque’s manu- 
script notes, to have been mythical. 
Page 355. Instead of Murccna melanotis, which is not yet known to 
occur in our waters, substitute: 
578. M. B*eaifera Goode »& Bean MSS. 
Body moderately stout, somewhat compressed. Teeth of ujiper jaw 
* Among the genera of Cuprinodonts, only those which have the anal fin in the male 
modihed are known to be viviparous. The others (Ciiprinodou, Fnndulus, Zggoncctcs, 
etc. ) are probably all oviparous. 
