1895. I OS THE ytTRSiyG-HABITS OF SOUTH-AMEUICAX FilOSS. 209 



showing the duct and outlet in one of the small hair-bearing chitinous 

 plates (cs.) of the cuticle. 



Fig. 26. Dark-staining net-like structure contained in a delicate sac near the 

 duct of some, at least, of the dermal glands, X 600. 



Fig. 27. Median sagittal section through the anterior portion of the pharynx, 

 showing the mode in which the distensor muscles (m/p.) are attached 

 to the roof (j}r.) of the pharjnx by numerous tendons. The depressor 

 muscles (mop.) of the roof of the pharynx are cut across and appear 

 circular in transverse section. Tlie anterior end of the pharyngeal 

 nerve (npk.) is seen, with its branches to the respective muscles. 



Fig. 28. Sagittal section through the testicular mass on one side of the body of 

 the (j', X 200. The section is cut in the plane where the vas deferens 

 {vd.) emerges. The true testicular portions are composed of sperm- 

 raother-cells (sm.), some of which are discharging their contents into 

 the portion [tua.) which functions as a vesicula seminalis. One of the 

 walls of the latero-posterior portion of the ventriculus is seen to the 

 right, containing dark-staining food-droplets within its cells. Between 

 the ventriculus and the testicular mass is seen the gland of unknown 

 function (//«.). 



3. On the Nursing-habits o£ two South-American Frogs. 

 By G. A. BouLENGER, F.R.S. 



[Received February 28, 1895.] 

 (Plate X.) 



At a recent Meeting of this Society a most interesting commu- 

 nication was read from Dr. E. A. Giildi, in which an account was 

 given of the breeding-habits of Ili/la f/oeldii, BIgr., as observed by 

 himself and his cousin Mr. Andreas Goldi in the Serra dos 

 Orgaos, Prov. Eio de Janeiro '. I have since received from the 

 latter gentleman two specimens of this rare tree-frog, one of which 

 is a female with the eggs on her baciv. This specimen I hava 

 brought for exhibition before the Society, and I wish to offer a few 

 remarks concerning it, together with a figure. 



The frog was captured on the 5th of January of the present 

 year at Colonia Alpina, Santa Rita de Theresopolis, and measures 

 42 millim. from snout to vent. The whole surface of the back is 

 occupied by one layer of 26 large pale yellow eggs, 4 millim. in 

 diameter, on which the embryos, coiled round the enorn)ous vitel- 

 line mass, can be distinguished with the naked eye. The skin of 

 the back is expanded in a feebly reverted fold which borders and 

 supports the egg-mass on the sides, thus suggesting an incipient 

 stage of the dorsal pouch of the allied genus Nototrema. 



The embryos are much elongate in shape, colourless, with a 

 large flat liead, in which the eyes are distinguishable as two black 

 points ; no traces of gills are to be seen. One of these eggs is 

 represented, enlarged, on the drawing (Plate X.), together with 

 the young in the condition it leaves the mother. 



Since the publication, in 1886, of my synopsis of the various 

 modes by which tailless Eatrachians protect their offspring, several 

 new types have come to my knowledge, among which that offered 



' See above, pp. 94-96. 



Proc. Zool. Soc— 1895, A'o. XIV. 14 



