68 PROCEEDINGS OF THE 



of preservation, proving the habitat of these animals to have been 

 quiet and shallow water. 



Dr J. Grieve exhibited a species of Serpula provided with two 

 opercula, each being as large as the normal single one; also various 

 species of Sabella, with the leathery and calcareous tubes which 

 they inhabit. Dr Grieve mentioned that the whole of the gills, 

 around the head, after being thrown off, were completely regene- 

 rated in the space of a month, and exjjlained how respiration was 

 carried on during the progress of reproduction; at the same time 

 describing in what manner the calcareous tube is extended, and 

 repaired in cases of fracture. 



A quantity of Piassava was exliibited by Mr Michael Connal, 

 who made some interesting remarks on its introduction into this 

 country, and the economic uses for which it is available. 



PAPEES READ. 



I. — On Fossil Enfomostraca from the ironstones and shales of the 

 Lanarkshire Coal-field. By Mr John Young. 



Mr Young, who appears to have minutely studied these organisms, 

 carefully described the numerous genera and species which had 

 come under his notice while exploring the coal-fields around Glas- 

 gow, and closed his remarks with a few directions as to the best 

 mode of extracting and preserving specimens for the cabinet^a 

 method shown to be most successful by the perfect state of those 

 which he exhibited. Mr Young had on the table a large collec- 

 tion of specimens illustrating the follo"wing genera: — Cy there, 

 Cythereopsis, Bairdia, Leperditia, Beyrichia, Kirkhya, Daphnia, Ento- 

 mocauchus, Ostheria, and Dithyrocaris. 



II. — On some of the Seansorial Birds of the Himalayas. 



By Mr Ludovick C. Stewart, Staff Surgeon-Major, with 

 illustrative groups of parrots, Avoodpeckers, etc., and some of 

 the allied genera. 



The series of specimens on the table illustrating this paper 

 possessed considerable interest, the specimens having been selected 

 out of a most extensive and carefully prepared collection; and 

 the author made some very graphic observations on the structure 

 and habits of the more interesting species. Mr Stewart also 

 exhibited specimens of the spine-tailed swift {Acanthylis nudipes), 



