92 FORAMINIFERA 



B. Wall mostly finely arenaceous, apertures at the end of tubular 



necks Aschetnonella. 



C. Wall largely of cement with scattered arenaceous fragments. 



Kalamopsis. 

 II. Chambers usually in a regular rectilinear series. 



A. Wall mostly arenaceous. 



1. Chambers rounded in section. 



a. Interior simple. 



(1). Test usually with an outer coating Nodosinella. 



(2). Test of coarsely agglutinated material Reophax. 



(3). Test finely arenaceous with much cement. 



Hormosina. 



b. Interior labyrinthic Haplostiche. 



2. Chambers compressed Ammofrondicularia. 



B. Wall mostly chitinous. 



1. Wall with some arenaceous material, aperture elongate. 



Turriclavula. 



2. Wall wholly chitinous, aperture rounded Nodellum. 



Subfamily 1. Aschemonellinae 

 Chambers irregular 



Genus ASCHEMONELLA H. B. Brady, 1879 



Plate 8, figures 1, 2 



Genoholotype, Aschemovella scabra H. B. Brady (= synonym of Astrorhiza 



catenata Norman). 



Aschemonella H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, p. 42. 

 Astrorhiza (part) Norman, Proc. Roy. Soc, vol. 25, 1876, p. 213. 



Test free, with several tubular or inflated chambers in a 

 single or branching series, irregular in size and form ; wall thin, 

 arenaceous, with a large proportion of cement; apertures often 

 several at the end of the tubular necks. 



Cretaceous to Recent. In the present ocean the species are 

 found mostly in cool or deep waters. 



The genus Psammosiphofi (Vine?) Rhumbler, if it is truly 

 foraminiferal shows an irregular arenaceous tubular form ir- 

 regularly divided as far back as the Silurian. Such forms are 

 however not well known in detail. 



