512 



INDEX TO VOL. XVIII 



Abraham, P. S., on some genera of 

 uudibrancliiate MoUusca, with de- 

 scriptions of new species, 132. 



Acalles, new species of, 63. 



^scbyntelus, characters of the new 

 genus, 113. 



Agarista, new species of, 249. 



Aglycyderes, new species of, 28. 



Aldonus, new species of, GO. 



Aleochara, new species of, 107. 



Amphilochus, new species of, 443. 



Amphiporus. on the enibryogeny of, 

 74. 



Amussium, new species of, 425. 



Animals, on the geographical distri- 

 bution of, 277. 



Anthozoa tabulata, on the affinities 

 of the, 1. 



Anthracosaurus Russelli, obserAa- 

 tions on, 14G. 



Anthura, on the stnictui'e of the 

 mouth in, 253. 



Aplysina, new species of, 229. 



Areas, new species of, 12G, 



Arvicola, new species of, 52. 



Ascomma, characters of the new 

 genus, 111. 



Astacidae, on the mode in which the 

 young of the New-Zesilaud, attach 

 themselves to the mother, 30G. 



Astacoides, note on the genus, 412. 



Atretia, characters of the new genus, 

 250. 



Atthev, T., on Anthracosaiu'us Rus- 

 selli, 14G. 



Aviculopecten, new species of, 96. 



Axinus, new species of, 492. 



Azorica Pfeiflerte, observations on, 

 466. 



Balanodes, characters of the new 

 genus, 118. 



BaiTois, J., on the embryology of the 

 Xemertina, 73. 



Bate, C. Spence, on the development 

 of the Crustacean embryo, 174. 



Bavav, M., on Pihabditis stercoralis, 

 508. 



Belenois, new species of, 247. 



Berosus, new species of, 114. 



Birds, new, 411. 



Bitoma, new species of, 25. 



Blanford, W. T., on the African ele- 

 ment in the fauna of India, 277. 



Bone-caves of Creswell Crags, on the, 

 182. 



Books, new : — Dobson's Asiatic Chi- 

 roptera, 266; Prejevalsky's Mon- 

 golia, 501 ; Juhes's School Manual 

 of Geology, 503. 



Bothrideres, new species of, 24. 



Brachiopoda, on some new and re- 

 markable North-Atlantic, 250. 



Brady, H. B., on a gi'oup of Russian 

 Fusulinfe, 414. 



Brandt, E., on the nervous system of 

 Hymenopterous insects, 504. 



Brexius, new species of, 59. 



Butler, A. G., on new Lepidoptera, 

 122, 240, 480. 



Callimerus, description of the new 

 genus, 445, 



Calliploea, new species of, 242. 



Calycidoi-is, characters of the new 

 genus, 132. 



Caranistes, new species of, 119. 



Carter, II. J., on Parkeria, 187 ; on 

 deep-sea Sponges from the Atlan- 

 tic, 226, 307, 388, 458. 



Castalius, new species of, 484. 



Catopsilia, new species of, 489. 



Cell-division, on the intimate phe- 

 nomena of, 509. 



Ceratosoma, new species of, 141. 



Cervus maral, observations on, 377. 



Cetaceans, new fossil, 358. 



Cethosia, new species of, 124. 



Cetoniidae, new species of, 422. 



Ch£etetes, on the structure of some 

 species of, 86. 



Chiroptera, on the classification of 

 the, 345. 



Chlaenius, new species of, 106. 



Choneziphius, new species of, 358. 



Chthonius, on the development of 



