TEEE-WOEMS OF GEEAT BEITAIK. 299 



Pound iu similar haunts to those chosen by the last species. 

 England : — Yorkshire (between Bolton Abbey and The Sfcrid, 

 July 1891; Apperley, 1892). Scotland (Paisley, 1892). Conti- 

 nental records : — Norway, Prof. Boeck (after whom the species 

 is named : c/. Eisen in (Efver. af K. Vet.-Akad. 1873, no. 8, 

 pp. 53-54). Italy (Eosa, Lumb. del Piemonte, p. 48). 



3. A. (DENDEOBiENA) suBEiTBicuNDA, Eisen. (PI. XXI. fig. 4.) 



A well-defined species, and more widely distributed than any 

 of the other dendrobsenic forms. It often occurs by scores and 

 hundreds in the midst of vegetable debris on the banks of York- 

 shire and other streams, and is easily recognized. It is the 

 largest and in point of size the most variable species of the group, 

 and is more frequently found away from trees than the others. 



Eisen described it in 1873 as a new species, but I am con- 

 vinced that this is the Lumhricus piiter of Hofi'meister, and must 

 be identical with many of the worms which are now reckoned as 

 synonymous with this. Eisen' s description is clear and full, so far 

 as external characters are concerned, and a slightly modified trans- 

 lation, to meet our methods of notation, will exactly suit our 

 indigenous species. 



Body cylindrical, somewhat depressed anteriorly and attenuated 

 posteriorly, flattened on the under surface. Prostomium large 

 and pallid, dividing the peristomium to about one half its dia- 

 meter. Grirdle large and conspicuous, of a dull grey colour, and 

 usually covering six or seven segments, 25, 26-31. On each 

 side of the girdle ventrally, and covering segments 28, 29, 30, is 

 a band which constitutes the tubercula pubertatis. Setse in 

 distant couples, not close together as in Lumhricus, or slightly 

 separated as in the Brandling. Total number of segments about 

 90 or 100, length averaging 90 millim. 



I may add that the colour is rosy red, with somewhat lighter 

 under surface. Setse on pale glands, which arrangement makes 

 them conspicuous. Spermathecse opening in the line of the 

 dorsal setse (Sosa). 



A tender delicate worm, well adapted for bait. It is largely 

 employed by anglers in England, under the name of the Cockspur 

 or Grilt-tail ; the latter name being derived from the colour of the 

 anal extremity. When a drop of methylated spirit is placed 

 upon the living worm it exudes a yellow fluid, and this may be 

 readily observed flowing from the dorsal pores, the first of which 



