COPEPODA FROM AVEST OF IRELAND. 97 



distant area, included a number of ground dwelling, 

 copepoda, or those which are not generally free-swimmers, 

 and would not therefore be brought so much into com- 

 petition with one another in the struggle for existence as 

 the altogether free-swimmers. Of the latter class may be 

 instanced the genera Hcnpacticus, Peltidium, Laophonte, 

 and Cletodes each of which furnish 2 or 3 species. 



I have expressed regret that there was not a larger 

 quantity of material for examination, and have the further 

 regret that we had not dredged deposits from the various 

 localities, for it is to this source mainly that we must look 

 for new species, as has been recently so w T ell exemplified 

 by Messrs. T. and A. Scott in the Clyde area. 



As this is a report on the Copepoda only, I need only 

 briefly refer to the other organisms found in the bottles. 

 Most noteworthy was the profusion of Appendicular -ia 

 especially in the spring tow-nettings, where they formed a 

 large percentage of the bulk. The large number of small 

 Medusae was a conspicuous feature and will no doubt not 

 have escaped the attention of so acute an observer as Mr. 

 Browne himself. Larval Decapoda and Sagitta were also 

 abundant throughout. 



As before stated a 5 % solution of formaldehyde 

 (formalin) was the preservative used, and the result is all 

 that can be desired and quite confirms my own previous 

 experience of its valuable preservative properties. A 

 drawback to its use when the preserved object is required 

 to be mounted for the microscope is the shrinkage 

 caused to the more delicate forms on removal to Farrants 

 medium or glycerine jelly, though probably this might be 

 overcome by the use of an intermediate solution containing 

 a smaller percentage of glycerine. 



In conclusion may I express the hope that while 

 heartily thanking Mr. Browne, he oi sonic, oilier natur- 



