Dr. F. Baron Nopcsa on Kerunia. 



97 



me the great resemblance that existed between Kerunia and 

 tlie Middle Eocene Belosepia found in the Bracklesliam beds 

 of England. Belosepia seems to differ from Kerunia mainly 

 by the absence of lateral horns and by the fact that the front 

 median spines of Kerunia are representerl in Belosepia by 

 several rows of irregular tubercles. The last and princi[)al 

 horn of Kerunia is, however, present in the l?ritish Eocene 

 srenus. 



Fig. 1. 





Fig. 1. Longitudinal section of Belosepia (f nat.). Fig. 2. Longitudinal 

 section of Kerunia (| nat.). 



The unshaded surface indicates the calcareous substance and lines of 

 growth ; the shaded surface (in fig. 2) is the region where the lateral 

 spines are given off; the black surface shows the chamber containing 

 the soft parts of the animal. L = ventral lip ; S= principal spine in 

 Kerunia (= rostrum in Belosepia) ; c^ = chamber. (The parts 

 marked in fig. 2 by dotted hues are not preserved.) 



To prove the morphological resemblance of Kerunia and 

 Belosepia I have thought it best to figure two cross-sections 

 representing both organisms together (text-figs. 1 & 2). 

 These exhibit the turned-back ventral lip, separated from the 

 first spine by a deep transverse cleft, and beyond this first 

 spine in Belosepia rugosities are visible, Avhile in Kerunia 



Ann. i& May. N. Hist. Ser. 7. Vol. xvi. 7 



