KEPOKT ON THE ASTEKOIDEA. 



147 



Porcettanastcr crcmicus, n. sp. Outline sketch of a young example, to show the abactinal plating. Magnified 13 diameters. 

 The following primary apical plates are indicated by numbers : — 1. Dorso-central ; 2, 2. Under-basals ; 3, 3. Basals. 



