1 



22 Eev. T. Hincks on the 



Family Escharidas (part.), Sraitt. 



Lepkalia (l)art.), Johnston, 

 Lepralia niiescens, n. sp. (PI. XVIII. fig. 6.) 



Zooecia quincuncial, short-ovate, very ventricose ; surface 

 dense, vitreous, highly polished and glistening, smooth, with 

 obscure radiating ridges, punctured, sometimes areolated round 

 the margin ; orifice much higher than broad, immersed in the 

 older cells, arched above, slightly contracted a short way above 

 the lower margin, which is a little curved outward; peri- 

 stome not raised, the inner edge of the oral aperture finely 

 denticulate, 5 or 4 spines above ; on each side, in a line with 

 the lower margin, a strong nodulous process ; about the centre 

 of the margin an avicidarium^ with rounded mandible, placed 

 on a swelling, which extends some way down the cell, and 

 facing sideways, mandible directed upwards ; often on the 

 front of the cell near the bottom (towards one side) a bracket- 

 like projection, bearing a rounded avicidarium. Ooecium (?). 



Zoarium forming a brownish patch on shells. 



Houston Stewart Channel ; Cumshewa ; Virago Sound 

 (probably). 



EXPLANATION OF THE PLATES. 



Plate XVII. 



Fig. 1. Microporella ciliata, Pallas, form umbonata, Hincks. 

 Fig. 2. Microporella ciliata, Pallas, form vibraculifera, Iliucks. 

 Fig. 3, Microporella ciliata, Pallas, form Calif ornica, Busk. 

 Fig. 4. Schizoporella longirostrata, n. sp. 

 Fig. 5. Schizoporella insculpta, n. sp. 5 a. OcBcium. 

 Fig. 6. Schizoporella jn-istina, n. sp. 



Fig. 7. Schizothecajissurella, n. sp. 7 a, A zocecium showing the primary 

 orifice. 



Plate XVIII. 



Fig. 1. Schizoporella crassilabris, n. sp. 



Fig. 2. Schizoporella tumulosa, n. sp. 2 a. Ooecium. 2 b. Orifice of mar- 

 ginal cell. 

 Fig. 3. Schizoporella crassirostris, n. sp. 

 Fig. 4. Monoporella bncnnea, n. sp. 4 a. Zocecium showing the suboral 



avicularium. 

 Fig. o. Schizoporella auriculata, Hassall, form ochracea. 

 Fig. 6. Lepralia nitescens, n. sp. 6 a. A young zocecium. 



[A figure of Schizoporella Daiosoni will be given hereafter.] 



