514 BULLETIN 34, UNITED STATES NATIONAL MUSEUM. 



PLATE LXXVI. 



Hyoid apparatus of Anura, mostly enlarged. Figures copieil from Parker's Structure 

 and Development of the Skull in the Batrachia, except Fig. 18 which is 

 is original, and Figs. 2, 3, 5, 6, and 7, which are from Dug^s Osteologie et 

 Myologie des Batracieus, corrected by comparison with Parker I. c. 



Fig 1. Xenopus capensis, S. Africa. 



2. Bombinalor igneus, Europe. 



3. Alytes ohsteiricans, Europe. 



4. Xenophrys monticola, India. 



5. Pelolates fuscas, Europe. 



6. Pelodytes punctatus, Europe. 



7. Bufo vulgaris, Europe. 



8. Phyllomediisa bicolor, S. America. 



9. Hyla eivingii, Australia. 



10. Coplueus marmoratus, S. America. 



11. Cystignatlms typhonms, S. America. 



12. Atelopus vai'ius, Costa Rica. 



13. Callula ptdchra, Farther India. 



14. Engystoma carolinense, N. America. 



15. Dendrobates iinetorius, S. America. 



16. Rhacophorus maximus, India. 



17. Bana esculenta, Europe. 



18. Remisus guttatus, Natal. 



PLATE LXXVII. 



Superficial and deep muscles of the mauus and pes of three species of Anuras. 



Figs. 1,2. Leptodactylus pentadactylus, mauus, male. 

 3, 4. Leptodactylus pentadactylus, mauus, female. 

 5, H, 7, Scytopis venuJosus, pes. 

 b, 9, 10, 11. Bana esculenta, i^es. 

 The lettering in Figs. 1-4 is identical with that used iu Dug^s Osteologie et Myologie 



des Batraciens. 

 No. 87, Cubito-metacarpal ; 88, subluuo-metacarpal of the index; 89, metacarpo- 

 metacarpal of the index ; 95, humero-subdlgital ; 96, cubito-radio-subpha- 

 langeal of the index ; 120, subluno-phalangettal of the index ; 121, sub- 

 metacarpo-phalaugo-phalangettal of the index. In Figs. 5 and 8 are dis- 

 played the superficial flexors of the digits. In 6, 7, 9, 10 and 11, the deeper 

 muscles of the phalanges and metatarsals are exhibited in the numbers 

 from 7 to 21. Nos. 13 and 22 are the second and third iutermetatarsals of 

 Dug^s. 



PLATE LXXVIII. 



Embryology of Hyla pickeringii Holbr., and Hyla ? versicolor Lee. ; from drawings by 



Prof. S. F. Baird. 



Figs. 1-19. Hyla pickeringii. 



1. Egg with germinal vesicle; first day after laying, May 15, 9 a. m. 



Figure a natural size. 



2. The same, May 16, 9 a. m. ; from above. 



3. The same. May 16, 9 a. m. ; from below, showing germinal area. 



4. The same iu profile. 



5. First appearance of embryo in egg laid about the evening of May 14. 



