A Revision of the Genus Auliscus Ehrh., &c. By J. Battray. 901 



irregularly polygonal, about 5 to 6 in 0* 01 mm,, decreasing sliglitly 

 towards the border. Processes 2, roundly elliptical, about 0*01 mm. 

 broad, a limiting band of minute markings sometimes distinct. 



This species forms the transition to Eupodiscus. 



Habitat : Cambridge deposit, Barbadoes (Johnson !). 



Var. major. — Subcircular, axes • 05 mm., subequal. Colour pale 

 grey. Markings 4 in 0' 01 mm., outlines more distinct, largest about 

 each side of the convex area between the processes. Border finely 

 undulate. Processes 2, at ends of minor axis, their peripheral side 

 more sharply defined than their central. — PI. XV. fig. 1. 



Habitat : Barbadoes (Hardman !). 



P. Jiirsutus sp. n. 



Elliptical, major axis • 2 mm., about If times minor. Surface 

 rising suddenly at the processes. Colour pale grey. Markings 

 minute polygonal areolge, 8 in O'Ol mm., without interspaces, rows 

 visible only around the processes, elsewhere without order ; apiculi 

 numerous, scattered but prominent. Processes 2, circular or elliptical. 

 0"025 mm. broad, their free ends obliquely truncated outwards, 

 hyaline, insertion a short distance from the border. — PL XV. fig. 3. 



Habitat : Eastern Archipelago * (Macrae !). 



P. tetrao]phthalmus Cleve MS. 



Circular, diam. • 0825 mm. Surface with 4 slight but evident 

 cuneate inflations expanding outwards almost from the centre to the 

 outer edge of the processes. Markings faint reticulate, about 4 in 

 0*01 mm., subequal, in obscure radial rows or without order, most 

 evident on the inflations. Processes 4, symmetrical, rounded, about 

 0"0075 mm. broad, most abrupt on the outer side, their border 

 narrow, smooth. — PI. XIV. fig. 10. 



The inflations here recall those found in some CoscinodisGi and 

 Aulaoodisci. 



Habitat : Barbadoes deposit (Cleve !), 



P. notatus. — A. nofatus Grev., Trans. Mic. Soc. Lond., 1865, p 5, 



pl. i. fig. 2. 



Circular, diam. 0*05 mm. Surface flat. Colour pale grey. 

 Markings small, rounded, granular, irregular on the central portion, 

 in indistinct radial but slightly curved rows towards the border, 

 interspaces distinct, widest towards the centre. Processes 2, circular, 

 about 0'0075 mm. broad, insertion about 1/3 of radius from the 

 border. 



Habitat: Cambridge deposit, Barbadoes (Johnson!); Oamaru 

 deposit (Grove). 



* Found, according to Dr. Macrae, in Holothurians purchased in the China 

 market, but probably from Torres Straits. 



