510 BULLETIN 34, UNITED STATES NATIONAL MUSEUM. 



Fig. 6. Pelohotes fuscus, front of skull. 



7. Cultripes provincialis, skull; from Duges. 



8. Didocus calcarattis, sternum. 



9. MegalopJirys montanus, front of skull. 



10. Lejitobrachiiim hasseltii, skull. 



11. PeJodytes pandatus, top of skull. 



12. XenopJirys monticola, front of skull. 



13. Bomhinator igneus, skull ; from Parker. 



14. Alytes ohstetricans, skull; from Parker. 



15. Discoglossus pictus, adult; vertebral column and skull from above; sternum 



from below. 



16. Biscoglossus pictus, skull of a younger animal from above. 



PLATE LXIX. 



Including Pipidce, Xenopidce, Bufonidce, and Bhinophrynidw. 



Fig. 1. Pip>a americana, frontoparietal and nasal bones; a, sternum, from Boulenger. 



2. Xenopus capensis, axial part of skull from above ; e, ethmoid bone ; os, orbito- 



spbenoid; n nasal. 



3. Myoiatrachits gouldi, front of skull from above, Avith and without prefrontals. 



4. Pseudophryne australis, skull from above; a, sternum. 



5. EpklaUa calamita, skull from above. 



6. Bnfo margaj-itifer, subsp. nasicas, skull from below, the vomers removed, 



showing palatines ; a, anterior half of skull from above, part of fronto- 

 parietal bone of one side removed to show superior plate of ethmoid. 



7. Biifo spinulosus (Peru), young animal, with and without prefrontals. 



8. Bufo spinulosus, adult. 



9. Bu/o lentiginosus americanus. 



10. Bufo delalandi (Mus., Paris). 



11. Bufo pantherinus ; frontoparietal bone removed on both sides displaying 



ethmoid. 



12. Bufo carens. 



13. Bufo cceruleostictus ; a, sternum. 



14. Peltaphryne jyeltacephala, head. 



15. Otaspis empusa, head. 



16. Eliinophrynus dorsalis, front of skull from above. 



PLATE LXX. 



Cystignathidce. 



Fig. 1. Pseudis limellum, skull from above. 



2. Pseudis mantidactyla, superior axis of skull. 



3. Pseudis paradoxa, superior axis of skull. 



4. Cydorhamphus fuliginosus; skull, separate ethmoid bone, and sternum. 



5. Mixophyes fasciolatus, cranium from above. 



6. »S'fOHi&Hsaj)ierica?iMS, superior axis of skull. 



7. Ceratophrys ornatus, young ; superior axis of skull. 



8. Stombus boiei, skull with crests from above; a, do., axis only ; diagrammatic. 



9. Ceretophrys dorsata, anterior extremity of ethmoid. 



10. C7i.iroZepies aitstj-aZis, part of skull of individual not fully mature ; a, perfect 



sternum. 



11. Grypiscus umbrinus, a, skull; b, sternum, and c, sacrum with urostyle. 



12. Calyptocephalus gayi, head from above. 



13. Limnomedusa macroglossa, skull and ethmoid ; the former showing thin os- 



sification along the sagittal suture. 



14. Cophceiis marmoratus, with separate ethmoid. 



