September 3. Price 3s. 



THE JOURNAL 



OF 



THE LINNEAN SOCIETY. 



Vol. XV. ZOOLOGY. No. 83. 



CONTENTS. 



< > Page 



I. On an unusual Form of the Genus Hemigholis', Agass. 

 By Prof. P. M. Duncan, F.R.S., P.L.S'! &c. (Plate 

 VI.) 7^^l^:' 138 



II. On the Tusks of the Fossil "Walrus found in the Eed 

 Crag of Suffolk. By E. Ray Lankestee, M.A., 

 F.R.S., F.L.S., Professor of Zoology and Compa- 

 rative Anatomy in University College, London. 



(Abstract.) 144 



III. Oil the Specific Identity of Scomber punctatus, Couch, 

 with S. scomber, Linn. By Fbancis Day, F.L.S. 

 (Plate VII.) 146 



IV. On two Cases of Incorporation by Sponges of Spicules 

 foreign to them. By Stuabt 0. Ridley, F.L.S., 

 Assistant in the Zoological Department, British 



Museum 149 



V. On supposed Stridulating-Organs of Steatoda guttata, 

 Wider., and LinypJiia tenebricola, Wider. By F. 

 Mattle Campbell, F.L.S., F.Z.S., F.B.M.S. (With 

 2 woodcuts.) , 152 



VI. On certain Glands in the Maxillae of Tegenaria domes- 

 tica, Blackwall. By F. Maule Campbell, F.L.S., 



F.Z.S., F.E.M.S. (With 5 woodcuts.) 155 



VII. Notes on Aplysia dactylomela. By G. E. Dobson, 



M.A., M.B., F.L.S., &c. (With 2 woodcuts.) 159 



VIII. On the Natural Classification of Gasteropoda. — Part I. 



By Dr. J. D. Macdonald, R.N., F.R.S 161 



IX. Observations on Ants, Bees, and Wasps ; with a De- 

 scription of a new Species of Honey- Ant. — Part VII. 

 Ants. Bv Sir John Lubbock:, Bart., M.P., F.R.S., 

 F.L.S., D'.C.L., LL.D., Vice- Chancellor of the Uni- 

 versity of London. (Plate VIII. and 5 woodcuts.) 167 



LONDON: 



SOLD AT THE SOCIETY'S APARTMENTS, BURLINGTON HOUSE; 



AND BY 



LONGMANS, GREEN, READER, AND DYER, 



AND 



WILLIAMS AND NORGATE. 



1880. 



