500 



INDEX TO VOL. XVIIL 



AcANTHELLA, new species of, 



479. 

 Acervochalina, new species of, 



376. 

 Acipenser ruthenus, on a parasite in 



the ova of, 110. 

 ^popMlus Bonnairei, remarks on, 



296. 

 AmarcBcium torqiiatum, on the 



heart, the digestive tube, and the 



generative organs in, 418. 

 Amphilectus, new species of, 3oO. 

 Aphis rumicis, on the destruction of 



the mangel-wurzel crops by, 1. 

 Aphroceras, new species of, 134. 

 Aplysina, new species of, 282. 

 Arachnids, on the embryology of 



the, 74. 

 Arthropoda, on the classification of 



the, 55, 179, 407. 

 Ascidia, on the central nervous sys- 

 tem in, 209. 

 Axinella, new species of, 377, 479. 

 Axinoderma, characters of the new 



genus, 344, 493. 

 Bairdia subelongata, new variety of, 



267. 

 Balanoglossus, new species of, from 



Herm, 355. 



Barrois, J., on the larvsD of Coma- 

 tulfe, 497. 



Batrachians, synopsis of, from the 

 Province Eio Grande do Sul, 423. 



Beyrichia, new species of, 257. 



Beyi'ichiella, new species of, 260. 



Books, new : — Lydekker's Siwalik 

 Crocodilia, Lacertilia, and Ophidia, 

 and Tertiary Fishes, 69, 159 ; Bar- 

 rois's Les Glandes du Pied et les 

 Pores Aquiferes chez les Lamelli- 

 brauches, 161 ; Proceedings of the 

 Belfast Naturalists' Field-Club, 

 1884-85, 163 ; Babington's Cata- 

 logue of the Birds of Suffolk, 319 ; 

 Smart's Birds on the British List, 

 320; Wachsmuth and Springer's 

 Revision of the Palaeocrinoidea, 

 Part III., 406 ; Etheridge and 

 Carpenter's Catalogue of the Blas- 

 toidea, 412. 



Boulenger, G. A., on a new Gecko, 

 91 ; on Reptiles and Batrachians 

 from the Province Rio Grande do 

 Sul, 423. 



Brady, II. B., on Orbitolites italica, 

 191. 



Brauchipus, on the pedunculated eyes 

 of, 78. 



