214 H. H. NEWMAN. 



ring. The only point of interest for this discussion, since her- 

 rings seem to show no sexual dimorphism, is that the testicular 

 tissue was located posterior to the ovarian tissue and overlapped 

 the latter somewhat. This condition of the sex glands reminds 

 one of the composite gland described in the preceding paragraphs. 



2. Some light is thrown on the influence of the sexual secre- 

 tions upon the secondary sexual characters. In this case the 

 presence of a comparatively minute amount of imperfect testic- 

 ular tissue has had the negative effect of inhibiting, in an indi- 

 vidual predominantly female, the transformation of the juvenile into 

 the female color pattern ; and the positive effect of producing in 

 this individual, at the expiration of the season's period of egg 

 production, an approximation of male coloration and behavior. 



3. In all cases of serial hermaphroditism described in available 

 literature the hermaphroditism is protandric and in successive 

 seasons. Here the sequence was distinctly protogynic and the 

 changes occurred within a period of less than a month. The 

 condition is decidedly anomalous. 



LITERATURE CITED. 



Newman, H. H. 



'07 Spawning Behavior and Sexual Dimorphism in Fundulus heterochtus and 



Allied Fish. Biological Bulletin, Vol. XII., No. 5, April, 1907. 

 '08 The Process of Heredity as Exhibited by the Development of Fundulus Hy- 

 brids. The Journal of Experimental Zoology, Vol. V., No. 4. 

 Roule, Louis 



'02 L'hermaphrodisme normal des poissons. C. R. Acad. Sc. Paris, T. 135, 

 PP- 155-157. 

 Southwell, Thomas 



'02 On a Hermaphrodite Example of the Herring {^Clupea harengus). Ann. 

 Mag. Nat. Hist. (7), Vol. 9, pp. 195-196. 

 Stephan, Pierre 



'oi-'02 A propos de l'hermaphrodisme de certain poissons. C. R. Ass. frang. 

 Av. Sc. 3ome Sess., ire Pt., p. 142 ; 2me Pt., pp. 554-570. 



