Plate 

 XXIII. 

 XXIV. 



XXV. 



XXVI. 



XXVII. 



XXVIII. 



XXIX. 



XXX. 



XXXI. 



XXXII. 



XXXIII. 



XXXIV. 



XXXV. 



XVIU 



Page 



1-5. Chromodoris reticulnta. 6. C. sykesi. 7, 8. C. caves. \ 



1-3. Chromodoris annulata. 4. C elizabethina. 5, 6. v 380 



C. nigrostriata. 7. C lineata. 8, 9. Cfava 1 



Avagina incola 40/ 



Hybrid Grouse [Lagopus lagopus S X Lyrurtis tetrix 5 ) 411 



Male Chigetai (JSquus hemionus) | ^-^^ 



Female Kiang {Equus hemionus kiang) ^ i 



Anthracotheriu7)i 7nagnum 456 



Telerpeton elginense I 



1,2. Telerpeton elginense. o. Procolojyhon trigouiceps.l 470 



Telerpetcn elginense 1 



• New Species of Tropical South American Erycinidcc. . 481 

 Articulation of Mandible in Tlieriodonts 490 



