of the Fisher y Board for Scotland. 



259 



genus of Coleoptera, its use by nie for a genus of Copepoda must therefore 

 apse, and the name I propose to substitute for it is Jeanella, the diminu- 

 ive of the proper name Jean. 



(b) Genus Paranthessius, T. Scott, Twenty-first Report of the Fishery 

 Board for Scotland (1903), Pt. III., p. 120. This name has already 

 been used by Professor Claus for a genus of Copepoda different from that 

 described in the Report mentioned, and it must therefore be replaced by 

 another, and the name I propose to substitute for it is Heteranthessius. 



DESCRIPTION OF THE PLATES. 



Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 

 Fig. 



Fig. 

 Fig. 

 Fig. 



PLATE XIII. 



Monstrilla longicornis, I. C. Thompson. 



Female, dorsal view 

 Male, dorsal view 

 Antennule, female 

 Fifth pair of thoracic feet, female 

 Abdomen and caudal furca, female 

 Antennule, male 

 Abdomen and caudal furca, male, ventral aspect 



Monstrilla gracilicauda, Giesbrecht. 



Female, dorsal view .... 

 Antennule, female .... 

 Abdomen and caudal furca, female, 



Diam. 

 x 26-5. 



35. 

 40. 

 53. 

 80. 

 53. 

 80. 



x 35. 

 x 53. 

 x 79. 



Monstrilla grandis, Giesbrecht. 



Fig. 

 Fig. 



11. 

 12. 



Female, dorsal view 

 Male, dorsal view 



26. 

 35. 



Monstrilla anglica, Lubbock. 

 Fig. 13. Female, dorsal view .... 



Monstrilla dabia, T. Scott, sp. n. 

 Fig. 14. Female, dorsal view 



Thaumaleus rigidas, I. C. Thompson. 



Fig. 

 Fig. 

 Fig. 



15. Female, dorsal view 



16. Antennule, female 



17. Fifth pair of thoracic feet, female 



x 21. 



x 26. 



x 35. 

 x 130. 

 x 130. 



Thaumaleus zetlandicus, T. Scott, sp. n. 



Fig. 

 Fisr. 



Female, dorsal view 

 Male, dorsal view 



PLATE XIV. 



Thaumaleus thompsoni, Giesbrecht. 



Fig. 1. Female, dorsal view . . . . . x 20*5. 



Fig. 2. Antennule, female . . . . . x 79. 



Fig. 3. Fifth pair of thoracic feet, female . . . x 79. 



Fig. 4. Abdomen and caudal furca, female . . . x 97. 



