INDEX OF SPECIES. 
Cytherella abyssorum, 407. 

beyrichi, 407. 
elliptica, 380, 407, 408. 
leioptycha, 408. 
nodosa, 380, 407, 408. 
parallela, 380, 407, 408. 
pulchra, 407. 
Cytheridea cypridioides, 380, 381, 397, 409. 
elongata, 381, 406. 
—— fabeformis, 397. 
heterostigma, 398. 
—— miilleri, 379, 380, 397, 398. 
papillosa, 380, 396, 397, 408. 
pinguis, 379, 380, 397, 408. 
zetlandica, 381. 
Cytherideis lithodomoides, 380, 381, 405, 406, 
408. 
recta, 380, 406, 408. 
Cytherina fulva, 402. 
impressa, 401. 













intermedia, 398. 
milleri, 398. 
parallela, 407. 
seminulum, 398. 
tumida, 401. 
Cytheropteron convecum, 403. 
gradatum, 380, 403, 409. 
intermedium, 380, 403, 409. 
latissimum, 380, 403, 409. 
pipistrella, 380, 404, 409. 
Cytherura broeckiana, 380, 381, 401, 409. 
cornuta, 380, 402, 409. 
fulva, 381. 
Dactylethra capensis, 192. 










Delphinorhynchus micropterus, 415. 
Delphinus densirostris, 416. 
sowerbyi, 415. 
— (Heterodon) sowerbiensis, 415. 
Dendrocolaptes albicollis, 311, 
Dendreca pennsylvanica, 263, 311, 313, 
, skull of, 263, 
Dicholophus cristatus, 259. 
Dicrurus leucops, 311. 
Dinornis (Part XXI.), by Professor Owen, contain- 
ing a restoration of the skeleton of Dinornis 


maximus, Owen, 147. 
, axial skeleton of, 42, 50. 
——, characters of, 50. 
, characters common to the genus, 184. 



553 
Dinornis, general comparison of the sternum of the 
genus, 171-176. 
——.,, pelvis of, 44. 
——., plumage of, 184. 
——,, ribs of, 44. 
——, specific modifications of the sternum of the 
genus, 175. 
——,, sternum of, 45, 
——, vertebre of, 42. 
—— and Apteryw, characters common to, 49. 
——,, Apterya, Casuarius, and Dromeus, charac- 
ters common to, 47. 
australis, 186-188. 
casuarinus, 174, 302. 
crassus, 173, 175, 180, 182, 183, 185. 
, skull of, 182. 
curtus, 174. 
didiformis, 42, 45, 174, 185. 
elephantopus, 45, 149, 151, 154, 155, 161, 164, 
172, 173, 175, 180, 185. 
—— giganteus, 147, 157,161, 162, 174, 175, 185. 
—— ——, fifteenth vertebra of, 162. 
gravis, 187. 
ingens, 174, 181, 182, 183, 185. 
maximus, atlas or first vertebra of, 148. 










—— ——,, axis, or second, vertebra of, 149, 150. 
, cervical, or third to the fifteenth, vertebra 
of, 152-164. 
, caudal, or fortieth to the forty-eighth, 
vertebree of, 178-181. 
, dorsal, or sixteenth to the twenty-second, 
vertebre of, 164-171. 
, general measurements of, 184. 
, sacral, or twenty-third to the thirty- 
ninth, vertebre of, 176-178. 
, sternum of, 171-175. 
—— ——, terminal caudals of, 180. 
rheides, 45, 173, 175. 
robustus, 147, 148, 149, 151, 173, 175, 181, 
185. 
struthioides, 174, 185. 
(Palapteryx) crassus, 173. 











Dioplodon densirostris, 416. 

europeus, 416, 

gervaisir, 416. 
Dog-fish, the Lesser Spotted, see Seylliwm cani- 
cula, 
—— and Skate, the skull of the, as compared with 
that of the more generalized Selachians, of the 
