880 Transactions of the Society. 



§ 8. LiNEOLATI. 



Transverse median areas indistinct or absent. IMarkings distinct, 

 foriuin'^ rough strands or narrow sharply defined pruinose striae, entire 

 or interrupted around central space. The interspaces distinct, usually 

 wide, hyaline. 



A. inierruptus sp. n. 



Roundly elliptical, major axis 0-1125 to 0-15 mm., about IJ to 

 l-ji„ times minor. Surface rising gradually near the processes, 

 transverse median areas at right angles to line of processes incon- 

 spicuous, with faint rounded outer ends. Colour pale grey. Central 

 space round, distinct, about 0-0125 mm. broad. Markings coarse 

 Btrioe with irregular edges, and with hyaline wide interspaces, those 

 converging to the processes and on the transverse median areas often 

 interrupted, around the border more regular, but of unequal lengths. 

 Processes '2, large, close to ends of major axis, about • 02 mm. broad. 

 —PI. XIII. fig. 5 ; Sch. Atl., pi. cviii.' fig. 8. 



This species has sometimes been associated with A. moronensis 

 Grev., from the type of which it differs in the character of its 

 markings. 



Habitat : Santa Monica deposit (Eae !) ; Kekko deposit (Kinker) ; 

 San Pedro (Grove !) ; Moravian Tegel (Kinker !) ; Yokohama mud 

 (Kinker !). 



Var. sparsa. — Circular, diam. • 075 mm. Markings similar, but 

 the striae converging to the processes more sharply curved, only a few 

 on the transverse median areas, those around the border more crowded 

 and irregular, delicate apiculi on the transverse areas, chiefly aggre- 

 gated about their outer ends. — PI. XIII. fig. 3. 



Habitat : Oamaru deposit (Hardman !). 



A. rugosus sp. n. 



Roundly elliptical, major axis • 095 mm. Surface rising but 

 slightly to the processes. Colour pale smoky grey. Central space 

 circular, distinct, ' 0125 mm. broad. IMarkings pruinose, in rounded or 

 narrow irregular patches, forming interrupted irregular curved strands 

 between central space and processes and more straight but more incon- 

 stant strands on the transverse areas, elsewhere more crowded and 

 without order, short strands evident on the distal side of the processes. 

 Processes large, circular, their circumference rugose, with broad hyaline 

 border.— PI. XIII. fig. 1. 



Habitat : Peruvian guano (Firth !). 



A. moronensis Grev., Trans. Mic. Soc. Lond., 1864, p. 83, pi. xi. fig. 6. 



Roundly elliptical, major axis • 07 mm., about 1|^ times minor. 

 Surface rising slightly near the processes, elsewhere almost flat. 

 Colour pale grey. Central space rounded, about 0*0075 mm. broad. 

 Markings distinct granular pruinose striae, those converging to the 



