REPORT ON THE RADIOLARIA. 1335 



thau the thorax, endino' in a spine. Abdomen inflated, subcyliudrical, divided at the wide open mouth 

 by nine deep incisions into nine large triangular feet. Network in the thorax and wings composed 

 of small, regular, hexagonal pores, in the abdomen of three transverse rows of irregular, very large 

 pores, which are surrounded and separated by bands of very small pores ; in each foot one large 

 pore and a marginal series of very small pores occur. I dedicate this wonderful species to the 

 memory of my dear wife, Anna Sethe. 



Dimensions. — Length of the three joints, a 0-04, b 01, -• 0-08 ; breadth, n 0-03, h O'l, c 012. 



Habitat. — Indian Ocean ; Cocos Islands (Kabbe), surface. 



2. Dictyocodon carolotce, n. sp. (PL 71, fig. 14). 



Shell with two deep strictures. Length of the three joints = 1:3 : 7, breadth = 2:5:6. 

 Cephalis hemispherical, with an oblique pyramidal horn of twice the length. Thorax subcorneal, 

 in the upper half with three divergent, triangular wings of half the length, the upper edge of which 

 is nearly horizontal, little curved. Abdomen nearly cylindrical ; divided at the wide open mouth 

 by nine deep incisions into nine triangular, vertical feet, about as large as the wings. Network very 

 delicate, with regular, small, circular pores of equal size and very thin bars. I dedicate this elegant 

 species to my dear mother, Charlotte Sethe. 



Dimunsions. — Length of the three joints, a 0'02, b 0'06, c 014 ; breadth, a 0-04, b 01, c 012. 



Habitat. — Cape of Good Hope (Bleek), surface. 



Subgenus 2. Dictyocodoma, Haeckel. 

 Definition. — The three lateral vidngs are prolonged from the thorax to the abdomen. 



3. Dictyocodon 20cilladii(s, u. sp. (PL 71, figs. 12, 13). 



Shell with distinct collar, but evanescent lumbar stricture. Length of the three joints = 1:2:7, 

 breadth = 1:3:8. CephaUs very small, with a large pyramidal horn of twice the length, bearing 

 at its base some small, often branched, accessory spines. Thorax three-sided pyramidal, without 

 external boundary prolonged into the large, inflated, gradually dilated abdomen. The internal boundary 

 between the two is marked by a fenestrated, horizontal ring (not indicated in the figure). Three 

 prominent, triangular, fenestrated wings arise from the base of the cephalic horn, and are prolonged 

 nearly through the whole shell almost to the edge of the mouth ; in its lower half they form three 

 elevated fenestrated apophyses, the upper edge of which is nearly horizontal. Mouth' divided by 

 about twenty incisions into as many triangular, vertical, fenestrated feet. The network of the 

 whole shell is very delicate, like fine gauze, composed of very small, regular, hexagonal pores. 



Dimensions. — Length of the three joints, a 0'03, b 0'055, c 0-21 ; breadth, a 0-03, b 0'09, c 0'25. 



Habitat. — Central Pacific,' Station 271, surface. 



