400 Dr. Lzacn's Arrangement of the Crustacea, &c. 
Gen. 14. Hypracuna, Mill. Latr. 
Palpi porrecti, appendice mobili instructi. 
Gen. 15. Limnocuares, Latr. 
Palpi incurvati, simplices. 
Subclassis I. NOTOSTOMATA. 
To this subclass belongs the genus Nycteribia of Latreille 
and Montagu, which I suspect will be found to constitute two 
very distinct genera. 
AXXIE De- 
