48 liverpool marine biology committee report. 



Notes on Liverpool Bay Foraminifera. 



Lieherkuhnia ivageneri, Claparede. 



Claparede and Lachmann, Etudes sur les Infusoires et les Bhizo- 



podes, Geneva^ 1850-1861. 

 Carpenter, Introduction to the Study of the Foraminifera. 

 Siddall, Quarterly Journal of Microscopical Science, April, 1880, 



pi. xvi, figs. 8-12. 



This very interesting Rhizopod is occasionally quite 

 common in Colwyn Bay. The delicacy of the membranous 

 " test " is such that the organism is quite unrecognisable 

 when dead. But if small colonies of living Polyzoa or 

 Hydrozoa be placed in glass bottles in clear sea water, and 

 allowed to stand undisturbed for a few days (even weeks 

 sometimes), this and many other Rhizopoda may frequently 

 be obtained from the sides of the bottle, from whence, as 

 already stated, they are easily transferred to a trough or slide 

 for microscopical study by means of a camel hair pencil, the 

 point of which has. been reduced to but a few hairs, or by a 

 small pipette. The early spring I have always found to be 

 the best period of the year to obtain these or other living 

 Rhizopoda. 



The very fine specimen of Lieherkuhnia which I have 

 figured as quoted above, was mounted in glycerine jelly prior 

 to drawing fig. 12, which is a representation in optical 

 section, x 1,000 diameters, showing, besides other parts, the 

 transparent integument beset by short rod-like spicules. The 

 presence of these led Dr. Carpenter, in the latest edition of 

 his Microscope and its Revelations, to suggest that this was 

 not the typical species. But I find that the spicules are due 

 to a crystallisation from the mounting medium. They are not 

 present on the many living examples I have examined since. 



Habitat. — Colwyn Bay, near Little Orme's Head, on 

 Algae and Hydrozoa, &c., from low water. 



