PKOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 109 



CYPRINODONTIDiE. 



22. Lucania parva (Baird & Girard). Bain-water fish. 



(? Cyprinodon j)arvus Baird & Girard, Ninth Smithsonian Report, 1845, 345 ; 

 Lucania parva, Jor. & Gilb., Syn. Fish. N. A. 893.) 



Very common in shallow waters and tide pools close to the shore, 

 .especially where fresh waters soak in to the sea. Length, 1^ to 2 

 inches. 



Color in life : Males, olive, with blnish reflections; edges of the scales 

 darker ; dorsal dusky orange, with a large black spot at the base in 

 front, ocellated with orange ; caudal orange-yellow, tipped with black ; 

 ventrals and anal orange-red, tipped with dusky; pectorals translucent. 

 Females larger, the fins pale olive, without black spot or edgings. 



Our specimens have the body deeper than in L. venusta, the depth 

 being about 3:^ in length. In other respects they agree closely with the 

 latter. They are ai^parently identical with specimens from Eastern 

 Florida referred by Dr. Beau to Lucania parva, a sijecies described 

 originally from Long Island, and known to me only from Dr. Bean's 

 notes. Head, 3^ in length ; D. 1, 10 ; A. 10 ; scales 26 — 8. 



23. Fundulus similis Baird & Girard. Sac-a-lai. 



Very abundant in lagoons and tide-pools, reaching an unusually large 

 size. 



24. Fundulus heteroclitus LinnjBus. Mud-fish. 



Fundulus grandis Baird & Girard. 

 With the preceding ; less abundant than farther north. 



25. Cyprinodon riverendi Poey. 



Trifarcius riverendi Poey, Memorias Cnba, ii, 306, 1860. 



Eather common in shallow waters near the shore ; reaches a length of 

 2J iuches. This species is very close to Cyprinodon gibbosus B. & G. (the 

 Gulf representative of C. variegatiis), but with larger scales, smaller 

 head, and the anal edged with black. The nominal genus, Trifarcius^ 

 based on the presence of six branchiostegals, is identical with Cyprino- 

 don ; the same number being found in Cyprinodon variegatus, contrary 

 to the statement of Valenciennes. 



jMale in life with the antedo: sal region lustrous steel blue, as in C. 

 gibbosus; the rest of the body olivaceous, obscurely clouded, but with- 

 out dark cross-bars. A black bar at base of dorsal ; a dark shade be- 

 low eye ; anal and caudal edged with black ; ventrals and anal red ; 

 dorsal dusky, edged with orauge; pectoral i)laiu, tipped with orange 

 and blackish. 



Female more silvery ; the back olivaceous and speckled ; the sides 

 with about 13 blackish bars, which do not reach tlie back ; these alter- 

 nately broad and narrow ; no yellowish shades ; a dusky bar through 



