LIST OF PLATES IN VOLUME XXIII. 



I. Callaeops periophthcdmica. Coloured fig. by H. Grönvold. 



II. Wing of the Male of Otis tetrax. By H. Grönvold. 



III. — VI. Butterflies, Larvae, and Pupae of the Families Amathusiidae, Brassolidae, 

 Mo-rphidae. From specimens and sketches by Horace Knight. 



VII., VIII. Structure of Somabraehys. By Karl Jordan. 



The Parts of this Volume were issued as follows : 



Part I. (pages 1—150): April 14th, 1916. 



Part II. (pages 151—298): September 25th, 1916. 



Part III. (pages 299—363, Plates I.— VIII.) : December 1st, 1916. 



Part IV. (Index, Title-page, Contents, and Errata): February 20th, 1917. 



