86 INVERTEBRATA. 



Belemnites subfusiformis, Duval Jouve, Belem. Terr. Cret. Infr. 



Castellana, pi. ix. 

 subfusiformis, de Loriol. Descr. des fossiles, Neocom. 



moyen du Mont Saleve, pi. I. fig. 1. 

 semicanaliculatus, Pictet and Renevier, 1858, Pa- 



Iceont. Suisse, Foss. du Terr. Aptien. p. 19, pi. in. 



fig. 1. 



There is some doubt as to the real type of the Belem nite thus 

 named by Raspail, Quenstedt (Petrifactenkunde Deutschland, 

 Cephalopoda), believing it to be a Jurassic (Weiss Jura) species, 

 different from that figured by d'Orbigny. We therefore refer to 

 the figures by Duval Jouve and d'Orbigny, as illustrating the 

 current idea of the species, being unable to settle the question 

 raised by Quenstedt. 



This form passes by easy gradations into Belemnites pistilli- 

 formis (Blainville), as was recognised by d'Orbigny in his sup- 

 plement (Terr. Cretaces), and the two so-called species have been 

 united under one name by Pictet and Renevier. In the North 

 German collections I find them still kept distinct, and I think the 

 name subfusiformis may with advantage be retained as a varietal 

 name for those forms with a decided ventral furrow at the alveolar 

 end. Further, this type is as a rule less swollen but more regularly 

 fusiform than the true pistilliformis, and the lateral furrows are 

 less distinct. 



Measurements. Length, 2| inches ; greatest breadth (just below 

 the middle), 10 mm. ; breadth at lower end of proximal furrow, 

 8 mm. ; breadth at inch from apex, 7 mm. 



Localities. Upware, also at Hythe (Woodwardian Museum). 

 N. Europe. Elligserbrink, Hilsthon (Brunswick Museum). 

 S. Europe. Alp. Mar. Claro (Neocomian), Castellane (d'Orb.), 

 Perte du Rhone, Aptien supr. (Pictet and 

 Roux). 



BELEMNITES SUBQUADRATUS, Roemer. 

 (Plate I., fig. 8, a,b.) 



Belemnites subquadratus, Roemer, Norddeutsch Oolitengebirge, 



1836, p. 166, t. 16, f. 6. 

 Ooster, Fossiles des Alpes, Ceph. p. 24. 



