The Cretaceous Fauna of Pondoland. 341 



Genus BACULITES, Lamarck. 



Baculites sulcatus, Baily. 



Plate XLIV., fig. 4. 



1855. Baculites sulcatus, Baily, Q.J.G.S., xi., p. 457 {partim), pi. xi., 



fig. 5c {non 5a, b). 



B. sulcatus of Baily included two species. In the smaller example 

 figured by that author, for which the name sulcatus is obviously 

 appropriate, there are strong rounded I'ibs which extend obliquely 

 backwards fpom the siphonal margin ; below the middle of the shell 

 they become broader and bend towards the anti-siphonal margin. 

 Between the ribs are broad, rounded furrows. The section of the 

 shell is oval, and more compressed on the siphonal than on the anti- 

 siphonal side. The sutures are not visible. The only specimens 

 seen are the types in the Museum of the Geological Society of 

 London. 



The ribs are somewhat similar to those of B. anceps, d'Orbigny,''' 

 but the shell is much less ovate in section, and the siphonal margin 

 is more rounded. In B. vertebralis, Lamarck, | the ribs are not so 

 strong as in B. sulcatus. 



Baculites Bailyi, sp. nov. 



Plate XLIV., fig. 5. 



1855. Baculites sulcatus, Baily, O-J-G.S., xi., p. 457 {partim), pi. xi., 

 fig. 5rt, h {non 5c). 



Description. — Shell increasing in diameter very slowly. Section 

 oval, compressed, rather narrower on the siphonal than on the anti- 

 siphonal side. A small carina is seen in specimens which have the 

 shell well-preserved. Lobes and saddles narrow and rather deep ; 

 the superior-lateral lobe is symmetrically divided by a deep rounded 

 saddle, and each part is divided by a similar but rather smaller 

 saddle. 



Ornamentation consists of small, inconspicuous ribs, which bend 

 rapidly backwards from the siphonal margin ; below the middle of 

 the shell they curve round and pass forward over the anti-siphonal 

 margin. 



* Pal. Franv. Terr. Cret., vol. i. (1842), p. 565, pi. cxxxix., ligs. 1-7. Schluter, 

 Cephalop. oberen deutsch. Kreide (1876j, p. 145, pi. xl., fig. 2. 



f Binkhorst, Gasterop. et Cephalop. Craie super, du Limbourg (1861), p. 40, 

 pi. \d., tig. 1. Schluter, ojj. cit., p. 143 1. xxxix., figs. 11-13, pi. xl., figs. 4, 5, 8. 



