dosteus : structure, 245 ; On the 

 occurrence of Denticles on the 

 Sn out of Xiphias gladius : struc- 

 ture, 321 ; On new Fishes from the 

 West Coast of Lake Tanganyika : 

 structure, 399. 



Plethodontohyla tuberifera, 

 sp. n., 354. 



P^eudoleistes virescens (z. s. h.), 463. 



Pterorhinus davidi (z. s. l.), 463. 



Eeptilia : 



A list of the Snakes of West Africa : 

 systematic, 267 ; A list of the 

 Snakes of North Africa: syste- 

 matic, 299 ; On a new species of 

 Zeuglodont and of Leathery Turtle : 

 structure, 309 ; On a new Snake, 

 and Batrachia from Madagascar: 

 structure, 349 ; On the number of 

 dorsal scale-rows in British Snakes: 

 structure, 357- 



Eusa unicolor (z. s, l.), 499. 



Structure. 

 Mammalia : Field-notes on some 

 Mammals in the Southern Sudan, 

 341 ; On the Digastric Muscle of 

 the Macaques, 437 ; Discussion on 

 the Zoological Position and AiBni- 

 ties of Tarsius, 465, 491 ; Exhibition 

 and remarks on a series of skulls 

 of the Beaver, 499. 

 Pisces : On certain features of the 

 otic region of the chondrocranium 



of Lepidosteus, 245 ; On the occur- 

 rence of Denticles on the Snout 

 of Xiphias gladius, 321 ; On new 

 fishes from the West Coast of Lake 

 Tanganyika, 399. 



Reptilia : On a new species of 

 Zeuglodont and of Leathery 

 Turtle, 309 ; On a new Snake, and 

 Batrachia from Madagascar, 349 ; 

 On the number of dorsal Scale- 

 rows in British Snakes, 357. 



Insecta : On the species of Balaninus 

 occun-ing in Borneo, 365. 



MoLLuscA : The Eadula of the 

 Mitridffi, 405. 



EciiiNODERJiATA : Note on the Eight- 

 ing Eeaction in Asterina gibbosa 

 Peun,, 423. 



Actinia : On the development of the 

 Mesenteries in JJrticina crassicornis, 

 453 ; On the ciliation of the Lepto- 

 medusan Melicertidimn octocos- 

 tahiin (Sars), 459. 



Tanais nierstraszi, sp. n., 332. 



Tarsius, 465. 



Testudo elephantina (z. s. l.), 464. 



Trachy mantis, gen. n., 352. 



Vinago calva (z. s. l.), 463. 



Xenocalamus trans vaalensis, 



sp. n,, 350. 



Zamenis flagelliformis (z. s. l.), 464. 



PRINTED liY TAYLOR AND TEANCIS, RED LION COURT, FLEKT STREET. 



