BRITISH SPECIES OF THE ORDER SYMPHYLA 65 1 



fwfacanfha, but the other is partially dried and mutilated so 

 that it is scarcely possible to venture an opinion as to its 

 identity. I believe however that I can faintly discern char- 

 acters in the cerci which would seem to show that it is the 

 same species as its mate. 



These specimens were taken from under a stone near high- 

 water mark on the tidal estuary of the Dee near Queensferry. 



Scolopendrella sp. 



In 1907 I discovered several rare beetles, springtails, etc., 

 by examining submerged shingle and sand on the Derwent 

 banks at Winlaton Mill, County Durham. Burrowed fairly 

 deep into this wet mixture of sand and shingle, a minute and 

 slender Scolopendrella occurred in numbers ; they were allied 

 to the following species, 6*. vulgaris, Hansen, but unfortunately 

 I never had the opportunity of examining them critically, and 

 now they are amongst the lost collection already referred to. 

 As its habitat is a peculiar and specialised one, the species is 

 probably new, and I shall make an effort to find further 

 specimens. 



Scolopendrella vulgaris, Hansen, 1903. (PI. xix., figs. 

 4, 8, and 10). 



Hansen, Quarterly Journal of Microscopical Science, xlvii., 

 pp. 79-81, pi. 6, figs. 6a-6d, pi. 7, fig. la, 1903; 

 S. notacantha (in part), Latzel, Die Myriop. d. osterr.- 

 ungar. Monarchie, ii., p. 11, 1884. 



I believe that the following characters are the easiest ones 

 by which to separate S. vulgaris, Hansen, from the closely 

 allied form S. isabellce, Grassi, both of which form part of 

 Hansen's third group. The cerci of vulgaris are sparingly 

 clothed with setae, which are on an average larger than in 

 isabell(2, and a few of them in the lower margin are decidedly 

 longer than the others and prominent, whilst in isabellce they 

 are moderately closely furnished, and many of the longer setae 

 protrude in all directions. The distance between the triangular 

 processes of the second dorsal scutum is a little longer than 



