464 On the Ovijiosition tn the tailless Batrachians. 



B. The ova are deposited out of the water. 



a. In holes on the banks of pools, which become filled with water 

 after heavy rain, thus liberating the larvae. 

 Leptodactylus ocellatus, L. ; L. mystacinus, Burm. ; Paludicola gracilis, 

 Blgr.* 



h. On leaves above the water, the larvpe dropping down when leaving 

 the e^^. 

 Chiromantis rufesceiis, Gthr.f ; Phyllomedusa Uieringii, Blgr. 



II, The yolk-sac is very large, and the young undergoes the whole or 

 part of the metamorphosis within the e^o^ ; at any rate the larva 

 does not assume an independent existence until after the loss of the 

 external gills. 



A. The ova are deposited in damp situations or on leaves, and the 



embryo leaves the e^^ in the perfect air-breathing form. 

 Rana opisthodon, Blgr.t ; Hi/lodes martinicensis, D, & B.§ 



B. The ova are carried by the parent. 



a. By the male. 



a. Round the legs ; the young leaves the eg^ in the tadpole 

 state. 

 Alytes II . 



/3. In a gular (the vocal) sac ; the young is expelled in the perfect 

 state. 

 Rhinoderma *f[. 



b. By the female. 



a. Attached to the belly. 

 Jthacophorus reticidatus, Gthr.** 



^. Attached to the back ; the young completes its metamorphosis 

 within the e^^. 



y. In a dorsal pouch. 



act. The j-oung leaves the pouch in the tadpole state. 

 Nototrema marsupintum, D. & B.|J 



bb. The young leaves the pouch in the perfect state. 

 Nototrema testudineuin, Esp.Jf ; N. ovifenun, Weinl.§§ 



* Tlensel, Arch. f. Naturg. 1867, pp. 124, 129, 1.38. 



+ Buchholz, INIon. Berl. Ac. 187-5, p. 204, and 1876, p. 714, pi. ii. 



t Boulenger, Trans. Zool. Soc. xii. 1886, p. 51. 



§ Bello y P]spinosa, Zool. Gart. 1871, p. o51 ; Bavay, Ann. Sc. 

 Nat. (5) xvii. 1873, art. 16; Peters and Gundlach, Mon. Berl. Ac. 

 1876, p. 709. 



II Demovn-s, M^m. Acad. Sc. Paris, 1741, p. 1P> ; De ITsle du Dr(5- 

 neuf, Ann. Sc. Nat. (6) iii. 1876, art. 7. 



5[ Jimenez de la Espada, An. Soc. Esp. Hist. Nat, i. 1872, p. 139 ; 

 Spengel, Zeitschr. wiss. Zool. yxix. 1877, p. 495. 



** Giinther, Ann & Mag. Nat. Hist. (4) xvii. 1876, p. 379 ; Fer- 

 guson, ap. cit. xviii. 1876, p. 357. 



ft Fermin, Developpemeut parfait du mystere de la g^n6ration du 

 fameux Crapaud de Surinam : Maestricht, 1 765. 



tt Boulenger, Cat. Batr. Ecaud. 1882. p. 417, 



§§ Weinland, Arch. f. Anat. Physiol. 1854, p. 449. 



