A Bevisioii of the Genus Auliscus Ehrh., &g. By J. Battray. 867 



A. normanianus Grrev., Trans. Mic. Soc. Lond., 1864, p. 82, 

 pi. xi. fig. 11. 



Circular or roundly elliptical, diam. 0"08 to 0'13 mm., tlie major 

 axis about 1^ times minor. Surface rising but slightly at the pro- 

 cesses. Colour pale smoky grey. Central space rounded, 0"012-5 to 

 0'015 mm. broad. Markings striate, the striae converging to the 

 processes delicate, the others radiating and diverging towards the 

 border, more sharply defined, rarely pruinose. Apiculi distinct on a 

 narrow band close to the border, elsewhere irregular, sometimes a few 

 scattered near this band at the middle of the areas between the pro- 

 cesses and around the central space. Processes 3, rounded or obtusely 

 triangular, 0"02 to O'OS mm. broad, with border delicately striated. — 

 Sch. Atl., pi. xxxii. fig. 3, pi. Ixvii, fig. 5, pi. cxvii. fig. 8. Pant. 

 Fossil. Bacil. Ung., p. 56, pi. xxx. fig. 314. 



Habitat : Moron deposit (Johnson ! Hardman ! Kitton ! Grifiin !) ; 

 Szahal deposit (Pantocsek !). 



A. superhus Leud.-Fort., Diat. Ceyl., p. 63, pi. vii. fig. 70. 



Subcircular, diam. ' 0475 mm. Surface with central portion 

 having tbe edges distinct, angular, extending between the processes, 

 and reaching about 2/3 of radius from centre. Central space 

 triangular, with somewhat obtuse angles and convex sides, about 

 0*006 mm. broad. Markings on central portion granular, distinct, 

 closely placed, round, subequal, the striae converging to the processes 

 short, and only evident close to them, those radiating from the outer 

 edge of the central portion to the border faint, somewhat more evident 

 near their outer ends; apiculi minute, scattered, on a narrow band 

 at the border, but absent opposite the outer side of the processes. 

 Processes 2, reaching the border, rounded, about • 015 mm. broad, 

 their central portion minutely punctate. 



Habitat: Ceylon (Leuduger-Fortmorel). 



A. StocJchardtii Jan., Abh. Schl. Ges. vater. Cult., 1861, p. 163, 



pi. i. fig. 4. 



Subcircular or roundly elliptical, major axis from 0*0875 to 

 0*125 mm, 1^ to l;^o times minor. Surface rising gently at the 

 processes, elsewhere almost flat. Colour pale to dark smoky grey. 

 Central space distinct, elliptical, with major axis at right angles to the 

 line of the processes, irregularly round, triangular, or quadrate, from 

 • 01 to * 0175 mm. broad. Markings striate, the strias converging 

 to the processes inconspicuous, elsewhere still more faint, radial and 

 diverging but slightly or straight ; apiculi prominent, on a distinct 

 band extending between the processes on each side of, and inflexed 

 opposite, the central space, and on a narrow band at the border, 

 aggregated around the processes, sometimes absent at the outer ends 

 of the diameter at right angles to line of processes. Processes 2, 



