SEX-RATIOS IX GAMBUSIA HOLBROOKI. 2O5 



'i2b Some Results of an Ichthyological Reconnaissance of Colombia, Sotith 



America. Indiana University Studies, No. 8. (27 pp.) 

 Evermann, B. W., and Goldsborough, E. L. 



'02 Report on Fishes Collected in Mexico and Central America, with notes 

 and descriptions of Five New Species. Bull. U. S. Fish Comm., Vol. 

 2i, pp. 137-159- 



'09 Notes on Some Fishes from the Canal Zone. Proc. Biol. Soc. Wash- 

 ington, Vol. 22, pp. 95-104. 



'10 Further Notes on Fishes from the Canal Zone. Ibid., Vol. 23, pp. 3-6. 

 Fulton, T. W. 



'90 The Proportional Numbers and Sizes among Sea-fishes. Ann. Rept. 



Fisheries Board of Scotland, Vol. 8 pp. 348-35 - 

 '92 Observations on the Reproduction, Maturity, and Sexual Relations of 



the Food Fishes. Ibid., Vol. 10, pp. 232-243. 

 '03 Icthyological Notes. Ibid., Vol. 21, p. 231. 

 Geiser, S. W. 



'21 Notes on the Differential Death-rate in Gainbnsia. Ecology, Vol. 2, pp. 



220222. 

 *22a Seasonal Changes in the Testis of Gainbnsia affinis, the Top-minnow. 



Anat. Record, Vol. 23, pp. 104-105. 

 *22b Observations on Sex in the Top-minnow, Gainbnsia affinis. Ibid., Vol. 



23, p. 112. 

 '233 Evidences of a Differential Death Rate of the Sexes among Animals. 



Amer. Midland Naturalist, Vol. 8, pp. 153-163. 

 *23b Notes Relative to the Species of Gambusia in the United States. 



Ibid., Vol. 8, pp. 175-188. 



'24 The Differential Death Rate of the Sexes in Animals with a Sug- 

 gested Explanation. Washington University Studies, Vol. 12 (Sci- 

 entific Series), No. i. (July.) 

 Harvey, E. B. 



'20 A Review of the Chromosome numbers in the Metazoa. Part II. 



Jour. Morph., Vol. 34, pp. 1-67. 

 Henn, A. W. 



'16 On Various South American Poeciliid Fishes. Ann. Carneg. Mus., Vol. 

 10, pp. 93-142. 



Hildebrand, S. F. 



'17 Notes on the Life History of the Minnows Gainbnsia affinis and Cy- 

 prinodon rariegattts. Rept. U. S. Commr. of Fisheries for 1917. Ap- 

 pendix VI. (15 pp.) 

 Hubbs, C. L. 



'21 The Ecology and Life History of Amphigonopterns aurora and other 

 Viviparous Perches of California. BIOL. BULL., Vol. 40, pp. 181-209. 

 Jordan, D. S. and Evermann, B. W. 



'96 The Fishes of North and Middle America. Part I. Bull. U. S. Nat. 



Mus., Vol. 47, part i. 

 Kuntz, A. 



'14 Notes on the Habits, Morphology of the Reproductive Organs, and 

 Embryology of the Viviparous Fish, Gambusia affinis. Bull. U. S. 

 Bur. Fisheries, Vol. 33, pp. 177-190. 



