Vol. 55.] FROM CHYPONS FARM, MULLTON PAEISH. 217 



elongate, but they are verj^ rarelj- preserved complete. In a small 

 specimen the cortical test measures 0*08 by 0'065 mm. in length and 

 breadth, and the medullary 0*04 mm. in length, while a large form 

 measures 0'12 by 0-085 mm., with the inner test 0-04 by 0-035 mm. 

 The pores are about 0*005 mm. in width. The longest spine is 

 0*11 mm. in length, and 0-03 mm. in thickness at the ba,se. This 

 species is very common ; the examples vary in size, but the mesh- 

 pores are of a similar character in all. The type of the species occurs 

 in the Devonian rocks of New South Wales. 



Statjeodruppa Eoxii, sp. nov. (PI. XYI, figs. 11, 12 & 13.) 



The test is oval, the pores circular or oval and apparently similar 

 in both cortical and medullary shells ; the radial spines are very 

 stout ; those of the longer axis are for the most part in the same 

 line as the axis, but the transverse spines are markedly oblique in 

 direction. An average specimen is 0*2 by 0*14 mm. in length and 

 breadth; the medullary shell is 0-06 by 0-045 mm.; and the longest 

 spine 0*14 mm. in length by 0*035 mm. in basal thickness. The 

 pores measure 0*006 to 0*008 mm. in width. This form is less 

 common than St. nucula, from which it differs mainly in its larger 

 size, thicker walls, and the pronounced oblique direction of the 

 transverse spines. 



One example (fig. 11) is referred with some doubt to the present 

 species on account of its smaller size, which brings it near to the 

 preceding species, St. nucula. The outer shell measures 0*15 by 

 0*1 mm., and the inner 0*05 by 0*035 mm. Only the bases of the 

 radial spines are shown, while the delicate mesh of the inner shell is 

 beautifully preserved. 



This species is named in honour of my friend Mr. Howard Fox, 

 P.G.S., who has so perseveringly worked at the radiolarian and 

 other rocks of Cornwall and Devon. 



Genus Druppalonche, ^ gen. nov. 



The test consists of two concentric, elliptical, latticed shells, with 

 three radial spines. 



Drxjppalonche clavigera, sp. nov. (PI. XVI, fig. 14.) 



The test is regularly oval ; the medullary shell is about one third 

 the diameter of the cortical, and the pores are minute. In the centre 

 of the medullary shell is a small spicular body with three rays, 

 round which there is a small group of pores. The radial spines 

 are relatively thick and terminate obtusely, but probably they are 

 incomplete. They are disposed at unequal distances apart. The 

 cortical shell measures 0*13 by 0*1 mm. in length and breadth ; the 

 medullary, 0*05 by 0*04 mm.; the longest spine is 0*1 mm., 

 with basal thickness 0*04 mm. The space between the shells, in 

 the specimen figured, is in part filled with the opaque material of 

 the matrix. Rare. 



^ Druppalonchp =: Olive with spines : cpv7nra,\6yxri- 



