616 



Fig. 6. Hemiscelus setosus (after Vinogradov, 1990a). 



3. Nair (1993) studied the poorly known males of Metalycaea glo- 

 bosa Stephensen and established the vaUdity of this genus, which earlier 

 Bowman (1973) was transferred to Lycaea and considered to be closely 

 allied to L. serrata Claus. There is one difficulty, however, with Nair's 

 action to transfer this species into the family Oxycephalidae on the basis 

 of the complete reduction of maxilla I and 11. These maxilla are strongly 

 reduced in L. serrata. The maxilla of the genus Simorhynchotus (similar 

 to Metalycaea) are completely reduced, as they are in the recommended 

 family Oxycephalidae. This lineage, considered in the book as allied with 

 Simorhynchotus, is justified for Metalycaea, and we conclude that this 

 genus should be included in the family Lyacaeidae. 



4. Restoration of the genus Themisto. Bowman and Cohen (1982) 

 restored the genus Themisto, which up until that time was called a junior 

 homonym of the nudibranch Themisto Oken, 1815, and was renamed 

 Parathemisto. But the name given by Oken was published in volume 

 three of Oken's Lehrbuch der Naturgeschichte (Oken 1815). This book 

 was placed on the Official List of Rejected Works by Opinion 417 of 

 the International Commission on Zoological Nomenclature (1956), which 



