210 " ENDEAVOUR " SCIENTIFIC RESULTS. 



Rossia australis, new species. 



Sepia hedleyi, new species. 



Sepia dannemgi, new species. 



Sepia chirotrema, new species. 



Teuthidiscus, new subgenus of Opisthoteuthis, with 0. 



(T.) pluto as type. 

 Opisthoteuthis pluto, new species. 

 Opisthoteuthis persephone, new species. 



VIII. — Acknowledgment. 

 My thanks are due not only to Mr. R. Etheridge for render- 

 ing possible my work upon the collection in the first instance, 

 but likewise to Mr. Charles Hedley, also of the Australian 

 Museum, Avhose ever-ready helpfulness in every possible 

 direction has kept me constantly his debtor. In spite of our 

 distance from one another his aid has been invaluable through- 

 out the course of my Avork. 



I must also express my gratitude to Mr. Robert N. Wenzel, 

 of Stanford University, Avhose help during a critical time 

 accelerated by many months the completion of this report. 

 His work with the drawings, as well as that of Mr. Herbert J. 

 Powell, of Redlands, California, constitutes its owti acknow- 

 ledgment, and shows how completely each artist by his 

 painstaking care overcame his initial unfamiliarity with the 

 technique of zoological illustration. Without the services of 

 these two the work in the scope in which it is now offered 

 would certainly not have been possible. • 



For the gift of several items of badly needed literature I 

 am indebted to Mr. Hedley, to Mr. Etheridge, and to Mr. 

 James A. Kershaw, Assistant Director of the National 

 Museum, Melbourne. 



