Jordan and Ever mann. — Fishes of North America. 2829 



Zygoneetes henshalli, Jordan, Proc. U. S. ISTat. Mus. 1879, 237, San Sebastian River, Flor- 

 ida. (Type, No. 23449. Coll.Ur. James A. Henshall.) 



To the synonymy of Funduhis cingulatus add : 



Zygoneetes rubrifrons, Jordan, Proc. TJ. S. Nat. Mus. 1879, 237, San Sebastian River, Flor- 

 ida. (Type, No. 23450. CoU.Dr. James A. Hensball.) 



Zygoneetes auroguttatui. Hay, Proc. U. S. Nat. Mus. 1885, 556, Westville, Florida. (Type, 

 No. 37362. Coll. Mann & Davisou.) 



An examination of a large amount of material recently collected in Flor- 

 ida by Drs. Evermann and Kendall shows that the synonymy of these 

 species shonld stand as indicated above. 



Examination of the type of Gambiisia arlingtonia shows it to be the 

 young of the form hitherto known as Z. henshalli , which, from an exami- 

 nation of the type and other specimens, proves to be the female of Fiindii- 

 lus chnjsotns. The dorsal in Gamhusia arlingionia is not inserted so far 

 back as the sixth anal ray, but is rather over the third or fourth. Both 

 G. arlini/tonia and Z. henshalli, agree with descriptions of F. chrysotns except 

 in coloration. Both are females, as shown by form of anal tin. All speci- 

 mens examined of the henshalli form are females, as shown in part by dis- 

 section and by the form of the anal fin. All specimens examined of the 

 form agreeing with descriptions of F. chrysotns prove to bo males, as shown 

 partly by dissection and by the form of the anal tin. Front series of teeth 

 much enlarged in all; anal tin usually with 11 rays. 



The type of Z.rnhrifrons ditlers from that of Z. henshalli in having a 

 heavier head, really longer snout, mandible more obliciue, giving the 

 muzzle a truncated appearance, and the sloj.e of the back to the snout 

 beginning farther forward. 



The type of Z. rubrifrons agrees with the description of F. cingnlatus, 

 except in the number of anal rays, there Iteiug 10 instead of 8, as given 

 in the description, which is a redescription of the type of F. cingnlatus. 

 Cuvier & Valenciennes, however, give 10 anal rays in the original descrip- 

 tion. Specimens in the United States National Museum labeled Zi/gonectes 

 cingulatus, from Pensacola, Florida, agree with the type of Z. rubrifrons, 

 with the exception of 1 specimen, which has 11 anal rays. 



National Museum specimens collected by Dr. Shnfeldt at New Orleaus, 

 labelled Zygoneetes chrysotns, contain both the Z. henshalli and Z. chrysotns 

 forms, i. e., those with pearly spots and no cross bars (females) and those 

 with dark cross bars (males) — that is, male and female of Fundulus chry- 

 sotns. Comparison of specimens collected at Tampa and Welaka, Florida, 

 reveal 2 color forms. Most of those from Tampa have the heavier head, 

 truncated muzzle, and outlines of F. cingulatus. Tlie 2 color forms are 

 those with dark cross bars, all males as shown by dissection and form of 

 anal tin. and those with no cross liars and no pearly spots, Avhich are all 

 females. The majority of individuals have 10 anal rays each. 



Most of the AVelaka specimens have more slender and pointed head, pre- 

 orbital less deep, really shorter snout, and the curve of the Ijody toward 

 the snout beginning farther back than in the preceding, and the majority 

 have each 11 anal rays. The 2 color forms represent the 2 sexes — females 

 with pearly spots and no cross bars, and males with dark cross bars and 

 many with small brown spots. 



