471 



INDEX TO VOL. XVII. 



AciDASPis, on the British Sihirian 



species of, 180. 

 Adixoa, new species of, 359. 

 ^mene, new species of, 362. 

 ^schna, new species of, 124, 368, 



419. 

 Agania, new species of, 22. 

 Agrotera, new species of, 139. 

 Aljena, new species of, 126. 

 Alestes, new species of, 279. 

 Aletis, new species of, 351. 

 Alloporus, new species of, 439. 

 Anibia, new species of, 202. 

 Amida, characters of the new genus, 



34. 

 Amphidromus, list of species of, 



66. 

 Anaciaeschna, new species of, 409. 

 Anatis, new species of, 28. 

 Andi'ews, C. W., on the structure of 



the Plesiosaurian skull, 466. 

 Animal kingdom, on the develop- 

 ment of the visual organs in the, 



162. 

 Anisosticta, new species of, 25. 

 Anolis, new species of, 16. 

 Antarctic life, on surviving refugees 



in Austral lands of ancient, 113. 

 Anthertea, new species of, 354. 

 Ants, on the relations of the myrme- 



cophile Lepismidse to, 398. 

 Apate, new species of, 338. 

 Aphanobius, new species of, 337. 

 Apodidte, on hermaphroditism 



among the, 120, 296. 

 Apogonia, new species of, 332. 

 Apseiides Latreillii, note on, 53. 



Apus cancriformis, on the male of, 

 120. 



Arachnida, new, 55, 240, 312, 383, 

 425. 



Archineura incarnata, description of 

 the female of, 370. 



Argiolaus, new species of, 286. 



Argyrothripa, new species of, 362. 



Aristodesmus, characters of the new 

 genus, 184. 



Arnold-Bemrose, H. H., on mam- 

 malian remains from Derby, 468. 



Aroa, new species of, 352. 



Arthriobasis, characters of the new 

 genus, 131. 



Arthropods, on modifications pro- 

 duced in the organs of sense and 

 nutrition in certain, by confine- 

 ment in caves, 407. 



Ascidia villosa, on the embryogeny 

 of, 106. 



Ascidians, on the embryogeny of 

 simple, 106. 



Atheris, on the species of, 266, 



Atritomus, new species of, 331. 



Atta cephalotes, on the soldier of, 

 160. 



Babycurus, new species of, 426 ; 

 notes on the genus, 427. 



Barbus, new species of, 397. 



Barilius, new species of, 277. 



Batrachiaus, new, 16, 395, 401, 

 449. 



Benham, Dr. W. B., on the male of 

 Apus cancriformis, 120. 



Bereuicea, observations on the genus, 

 41. 



