89 



back as tlie Gault, aud is most common as a Cretaceous fossil. 

 A single example of this genus was found at a depth of forty- 

 five feet which is both longer and more tapering than those 

 just described, but whether this is simply an individual de- 

 parture from the typical form or is a member of another species 

 cannot be determined on the evidence of a single example. 



Gauclryina (/) scahra, Brady. — This is one of the new species 

 which Mr. Brady has figured from the Challenger dredgings. 

 It has an elongated tapering test, the oral end being broad 

 .and rounded, with the opposite extremity obtusely pointed. 

 The triserial portion of the shell forms but a very small pro- 

 portion of the whole. The aperture is an arched fissure at the 

 inner margin of the last segment. It is rather coarsely arena- 

 ceous, and of a brownish colour. This species was taken at 

 only two of the Challenger's stations, and these near together, 

 off Sombrero and Culebra Islands, at depths of 450 fathoms 

 .and 390 fathoms respectively. It occurs both in the upper 

 .and lower portions of the Hergott section. It apparently 

 agrees closely with Mr. Brady's figures and description of the 

 species, even to the brown colour of the test, of which it 

 shows some trace ; but as the examples taken are very limited 

 in number, I have chosen to refer this species as above with 

 some reservation. 



Verneuilina poJi/stropTia, Beuss. — This is a triserial Eorami- 

 nifer, with very distinct globose chambers, and is coarsely 

 arenaceous. It is a shallow-water species, seldom being found 

 at a greater depth than 50 fathoms, and has its habitat on muddy 

 bottoms and in estuaries. It is most common in the Xorth 

 Atlantic and Mediterranean, but it has also been found on the 

 coast of Ceylon and on the east coast of Australia. In geo- 

 logical formations it is only known as a Post-Tertiary Porami- 

 nifer. Only one example was obtained from the Hergott 

 material, at a depth of 200 feet., but this was perfectly 

 ■characteristic of the species. 



^lacopsil'ma cenomana, d'Orb. — This is a very simple, tubular, 

 ^nd parasitic Foraminifer, often spiralline in the earlier portion, 

 and soon becoming very irregular in growth. It is a 'parasitic 

 form, and is often found growing on the surface of shells, 

 corals, &c. It is not a very common form at the present day. 

 It is recorded from one of the stations dredged by the Porcu- 

 pine in the North Atlantic. It is also known as a Mediterra- 

 nean species, and the Challenger record gives the additional 

 localities of the South Atlantic and the coral reefs of the 

 Pacific. Its home appears to be in the shallow waters of the 

 tropical seas. Two or three examples which may be referred 

 to this species were found in the Hergott material, but all 

 ■these are from one horizon — and this the lowest of the section 



