AuOTTST 20. Price 2s. 



THE JOURNAL 



OF 



THE LINNEAN SOCIETY. 



T0L.XIIL ZOOLOGY. ^^^^6^ No- 70. 



't '-"^ 



CONTENTS. 



Page 



I. Description oi Acantharachna mirahilis, a new form of 

 Ophiuridae. By Ed&ab A. Smith, F.Z.S., Zoologi- 

 cal Department, British Museum. (Communicated 

 by Dr. J. Mtjeie, F.L.S.) (Plate XVIII.) 335 



II. Geographical Distribution of IndianPreshwater Eishes. 

 — Part II. The Siluridse. By Erats^cis Day, Esq., 

 E.L.S 338 



III. Notes on the G-enus Alveolites, Lamarck, and on some 



allied Eorms of Palaeozoic Corals. By Prof. H. 

 Alletne Nicholson,M.D., D.Sc.,E.E.S.E.,E.L.S., 

 and RoBEBT Etheridge, jun., E.G.S. (Plates 

 XIX. &XX.) 353 



IV. On the Sacral Plexus and Sacral Vertebrae of Lizards. 



By St. George Mitaet, Sec. L.S., and the Eev. 

 sioBERT Clarke, E.L.S. (Abstract.) 370 



V. On the Nymph- stage of the Emhida, with Notes on 

 the Habits of the Eamily, &c. By E. M'Lachlan, 

 Esq., E.E.S., E.L.S., &c. (Plate XXI.) •. 373 



LONDON: 

 SOLD AT THE SOCIETY'S APARTMENTS, BURLINGTON HOUSE; 



AND ET 



LONGMANS, GEEEN, EEADEE, AND DYEE, 



AND 



WILLIAMS AND NOJ^GATE. 



1877. 



