1897.] VRmi^'D.—An7ielids Neic to Ireland. 207 



2. IVIescnchytraeus fenestratus, Kisen. 



The middle of May, 1897, Dr. Trumbull collected some specimens near 

 the waterfall, Powerscourt, Co. Wicklow, one of which I examined. It 

 had, however, begun to decompose when it reached me. so that it was 

 not in a fit state for identification, and I had no duplicate with which to 

 check my diagnosis. I have, however, every reason to think that it 

 belonged to the species named above, the number and shape of the 

 setae, with some other characters, being sufficient to indicate its genus 

 satisfactorily, as well as shadow forth the species. Perhaps some other 

 collector will favour me with material from the same locality that the 

 species may be made absolutely certain. 



3. Llmnodrilus udekemianus, Clap. 



I received from Dr. Trumbull on April ist, 1896, a very interesting 

 consignment, which included specimens of this worm or a very close 

 ally. The descriptions which I have seen are ver}^ meagre, but for the 

 present this is the only name which will fit my material. One specimen 

 had a regenerated tail, which was interesting, because it had not 3'et 

 been differentiated into segments ; setse usually about five or six per 

 bundle in the anterior segments, four behind the girdle. Female pores 

 prominent in front of setse ; dilating heart in segment nine, sometimes, 

 when throbbing, reaching into segment ten. There were no penial 

 setae, and the penis-sheath was not more than four times as long as 

 broad. This curious structure is trumpet-shaped, and closely resembles 

 that of my new species (Z. wonisworthianus) found in Cumberland. This 

 genus has uncinate setse only, and the upper tooth is much larger than 

 the lower in this species. The receptacles are very elongated pear- 

 shaped bodies, without coils. There is reason to believe that the fresh 

 waters of Ireland would yield several species of LimnodriUis if carefully 

 worked. I have since received this worm from Co. Antrim by the kind- 

 ness of Dr. Trumbull. 



By a curious oversight I fiud I omitted to include among the 

 species found at Belfast (supra, p. 63), one which was exceed- 

 ingly plentiful, and about whose identity there could not be a 

 moment's doubt. I therefore include it here. 



4. Pachydrllus verrucosus, Clap. 



In March, 1897, I received specimens of the same worm from a 

 collector at Grantham, in Lincolnshire, England, but I believe that the 

 worm has not heretofore been reported as British. Mr. Beddard's 

 definition shows it to be about 12 mm. in length, with an average of 40 

 segments and three to five setae per bundle. It is a flesh-coloured or 

 red-blooded worm, and when seen in numbers, as under the algae of the 

 Connswater, is quite conspicuous. Descriptions of each of the foregoing, 

 with full bibliography, will be found in Beddard's INIonograph of 

 Oligochseta. 



