On Jurassic and Cretaceous fossils from North-East Greenland. 495 



The posterior part of the rostrum is distinctly compressed and 

 the underside is flattened, so that a section here is someлvhat rounded- 

 (pmdrilateral with the greatest ])readth down towards the underside; 

 this section still has the rostrum in the posterior part of the alveolar 

 region, whilst the section further forward is very nearly circular. 

 The apical line lies very excentrically. The alveolus is very deep, 

 as it has certainly occupied more than half of the whole length of 

 the rostrum; its angle is ca. 22°. 



The portion of the rostrum preserved is 98 mm long ; at the point 

 about 5 mm are wanting and at the alveolar end ca. 30 mm, so that 

 the whole length has been ca. 1ЛЗ mm, of which the alveolus has 

 taken up at least 7(1 mm. At the point of the alveolus the dorso- 

 ventral diameter is 22"5 mm, the transversal 22 mm. The apical line 

 lies here 7 mm from the underside and 155 mm from the upper side. 

 At a distance of 35 mm in front of the point of the alveolus both 

 the dorsoventral and transversal diameters are 23*5 mm. The width 

 of the alveolus is here 12 mm. 



Distribution. North-East Greenland: "Kløft Г" on Store 

 Koldewey Island (1 spec). 



Russia: in the zone with Cavdioceras cordatiiin and C. cdter- 

 nans. 



From the ienting-ground 3/V 1907 on Store Koldewey Island there 

 are two disconnected fragments of a Belemnite, which in form and 

 position of the axis seem to agree well with B. magnificus d'Orb., 

 but the material is too incomplete for a certain determination. The 

 fragments were found in a fine-grained, light-gray, легу micaceous 

 sandstone. The one fragment shows the posterior part of the alveolus, 

 the angle of which is ca. 23^" (measured dorsoventrally)'. On the 

 surface of the same fragment there is a quantity of oblong, compara- 

 tively deep, small pits, which greatly resemble those produced by 

 Pohjdora in Mollusc shells of the present day. These pits are filled 

 with sandstone and must therefore Ьале been formed before this 

 rostrum has been deposited in the sand. — From another locality 

 on Store Koldewey Island, the tenting-ground 8/ЛТ 1907, there is a 

 couple of fragments of two difYerent Belemnite species, certainly 

 different from those mentioned above. In the one species the rostrum 

 is very strongly compressed and the apical line very excentric, whilst 

 the rostrum in the other is almost circular in section with a slight 

 flattening on the ventral side, and the apical line is considerably 



' Zinc-blende occurs in the innermost part of the alveolus. 



