THE BATRACHIA OF NORTH AMERICA. 



499 



Cope, ProceL'il- 



roni below ■ li. 



E. E.Giili ; J, 



PLATE XIV. 



Skeleton of Amblystoma punctatum, ouobalf natural size; superior view. No. 722. 



PLATE XV. 



Amblystoma punctatum, skeleton from below ; natursvl size. 



PLATE XVI. 



Amhiyatoma punctatum, skull, one-half larger than natural size. 



Fig. 1. Skull, above. 



','. Skull, below. 



:{. Skull, left sidCj exterior. 



1. Skull, left side, interior. The numbers below are those of the nerves which 



issue from the foramina of the Hj;ure. 



PLATE XVII. 

 Visceral anatomy of J mhlystonui punct<itiiin, from drawiuj^s by Prof. S. F. Baird. 



Flu. 1. Viscera in place, from below. 



2. Liver, from above; a, from below. 



3. Corpora adiposa and ovaries; one outlined only. 



4. Larynx, lungs, stomach, and spleen isolated. 



PLATE XVIII. 



Amhlystoma punctatum, development of larva, from drawings by Prof. S. F. Baird, 



magnified foui' diameters. 



Fig. 1. Embryo taken from egg 4 Hues in diameter, x 4. 

 'J. Another embryo, from above; <t from below. 

 ;!. Larva just from the egg, from below, x .■^. 

 4. Larva two weeks free from egg, with three digits on luanus, from above; 



II, from side; x 4; May, 11, lir4'^. 

 ."). Larger larva, with posterior limbs, from above, x 4. "In six individuals, 



all had the right branchia- less developed than the left;" note .S. F. Baird. 

 f). Hinil limb before development of digits. 



7. Right fore-ibot, from above, of specimen older than fig. 4 ; .">-2r>, lr48. 

 -. Eye of lig. 4, showing lens. 



PLATE XIX. 



.tmhlyriloma upaeum and I'lethodoii eri/thronotuti, skulls, twice natural size. 



Fig. 1-3. Anthlysiomii opacum. 

 4-(j. Plethodon irythronotua. 



PLATE XX. 



Anatomy of Amhlystoma ojxu'Mm, drawn by Prof. S. F. Baird. 



Fi(i. 1. VLscera in place, from below ; lettering as before; female; natural size. 



2. Oviducts and fat bodies; natural size; c/, cloaca; fo, foutanelle of oviduct; 



A', kidney. 



3. Stomach and liver; the latter everted, to show portal vessels. 



4. Cloaca much enlarged, showing mouths of oviducts and labia (/a.). 



5. Urinary bladder distended. 



0. Urogenital sy.stem ; C A, corpus adiposum ; T, testis; k, kidney; vet, vasa 

 efferentia testis ; vck. vasa eli'erentia, reiiis; i'. (?. vas deferens. 



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I- , 



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