83 



these were for the most part single examples o£ tlieir kiud. In 

 addition to some irony-looking casts there occur a few fragments 

 which carry the lustre and colour commonly seen in fossil bone. 

 An examination by sections of a considerable number of 

 specimens of this kind, in this and the following sample of 

 material, has led me to conclude that they are shell remains of 

 an unusual colour. Some of the fragments appear as though 

 they had been perforated by some boring annelid. There was 

 also found in this sample a fragment which belongs probably 

 to the calcareous algae. 



10. From three hundred and six feet to three hundred and nine 

 feet from surface. — This, like the preceding, is evidently a 

 littoral deposit, and the two samples must be stratigraphically 

 associated. When examined under a lens it is seen to be made 

 up almost entirely of a fine-grained sandstone that has been 

 broken down by some denuding forces and subjected to attrition. 

 The sand grains are for the most part very small, and have 

 •evidently been derived from a soft sandstone that formed the 

 -shore line. Some of the fragments of rock enclosed in this bed 

 .are white and others of a greenish hue, the latter being in 

 sufficient quantities to give a decided greenish cast to the bed. 

 The organic remains are few. The most numerous of these 

 consist of the smooth and polished objects referred to in the 

 preceding sample, and these show evidences of wave action in 

 their abraded edges. Only two species of Foraminifera occur, 

 but one of these, Placopsilina cenomana, d'Orb., is peculiar to 

 this sample, and forms an interesting addition to the list. 



Eemaeks ox the Species. 

 Hjiperammina vagans, Brady. — This is an arenaceous Fora- 

 minifer, possessing an undivided and unbranched tube which 

 follows most tortuous lines, being often coiled on itself, not 

 unlike some marine annelid growths. It possesses a primordial 

 -chamber of a round or oval shape, which is inflated and 

 slightly larger than the tubular extension. In the Hergott 

 material there is one example of the tube coiled and two 

 -examples of the primordial chamber which are of an oval shape. 

 The collection made by the Challenger shows that this species 

 has an almost universal distribution in the seas of the present 

 •day — from Spitzbergen to Iverguelen Island. It seems to 

 prefer a cold habitat, as in the Arctic seas it comes within 

 £fteen fathoms of the surface, whilst in the great ocean depths 

 it was dredged from a depth of 2,900 fathoms, where a similar 

 Arctic climate prevails. This form has been recently found in 

 the Jurassic rocks of Switzerland by Dr. E. Haeusler, and has 

 been described and figured by him in the " Quarterly Journal 

 ■of the Geological Society" (Feb. 1, 18S3). There is also a 



