870 Transactions of the Society. 



Var. circumducta. 



A. pruinosus Bail., 8ch. Atl., pi. xsxi. fig. G-9. 



Major axis 0-1175 mm., about l^^^ times minor. Surface 

 with an indistinct but irregularly bounded transverse median area 

 rfacbing almost to the border. Central space round, U-0175 mm. 

 broad. Markings punctate, the strands converging to the processes 

 delicate, those on the transverse area ilexuous, interrupted, diverging, 

 near the border irregular or indistinct ; apiculi minute, irregular 

 around the border. Processes 2, rounded, 0*03 mm. broad, their 

 centre distinctly punctate. 



Habitat : North America (Weissflog !) ; St. Augustine, Florida 

 (Weissflog ! ) ; Los Angelos (Hardman !) ; San Pedro (Grove!); 

 Bahia (Hardman !*) ; Oamaru deposit (Grove !). 



Yar. ahrujjfa. — Major axis • OS mm., about 1^ times 

 minor. Surface without transverse median area. Central space 

 0*0125 mm. broad. Markings punctate, the striae converging 

 to processes only visible near the latter ; apiculi prominent, 

 irregular, numerous. Processes 2, • 02 mm. broad, close to central 

 space. 



Habitat : Santa i\ronica deposit (Rae !). 



Var. Carpentarix. 



A. pruinosus var. Carpentarise Grun., Sch. Atl., pi. sxxi. fig. 11, 



pi. xxxii. fig. 5. 



Diam. 0"07 to 0*145 mm. Central space 0*0125 mm. broad. 

 Markings inconspicuous, striae closely placed, those converging to the 

 processes short, within the border a narrow band with striae just 

 visible ; apiculi irregular within this band, and sometimes forming 

 a narrow zone at its outer side. Processes 2, 0*015 mm. broad, 

 placed towards the central space. — A. pruinosus var. zanziharica 

 Grun., Sch. Atl., pi. xxxi. figs. 13-15 ; A.macraeanus Moll, (not Grev.) 

 Sch. Atl, pi. xxxi. fig. 11. 



Habitat : Gulf of Carpentaria (Weissflog !) ; Zanzibar ("Weissflog ! 

 Cleve !) ; Manilla (Hardman !) ; E. Elizabeth (Hardman If) ; Yoko- 

 hama (Kitton !) ; Labuan (Cleve !). 



Yar. strioJata. 



A. punctatus Bail., Sch. Atl., pi. Ixxxix. fig. 14, 15. 



Circular, diam. 0*0675 mm. Surface with transverse median 

 area undifierentiated. Central space round, 0*0125 mm. broad. 

 IMarkings irregular, clear, rarely anastomosing, lines diverging from 

 central space, the anastomoses sometimes most evident around border ; 

 apiculi few, ii*regular. 



Habitat : Los Angelos (Hardman !) ; Eio de Janeiro (Eae !J) 



* In the Collection of IVIr. Julien Deby. 



t In the Collection of Mr. A. de Souza Guimaraeue. 



+ In the Collection of Dr. GiiflSu. 



