324 Dr. & the Rev. S. Graham Brade-Birks on 



Both animals have an acute caudal process and smooth pro- 

 zonites. In I. fallax the legs of the first pair, in the male, 

 are sickle-shaped. 



*1 ? (or I. liguli/er), Cave Dale, R. S , in a recent year 

 (J.) ; G. 3159; both sexes, Bakewell district, ourselves, 1918. 



Genus Tachypodoiulus. 



5. T. albipes (C. L. Koch). 



Syn. ? I. niyer, Leach. 



I. transversosulcatus, Am Stein. 



S 22-30, ? 25-35 mm. 



This large black julid is easily distinguishable under the 

 microscope by the presence of transverse stria? on the pro- 

 zonites, to which Am Stein's name for the species owes its 

 origin. This animal is common in our islands. 



* ? , Kings Sterndale, near Buxton, R. S., 18/viii./13 (J.), 

 G. 3154; *<J, ? $, in a collection from Dove and Mill 

 Dales, B. S., 21/iv./14 (J.) ; 1 <$ , near the R. Dove, our- 

 selves, ix./16; Buxton & Bakewell districts, ourselves, 191 8. 



Genus CylindeOIULUS, Verhoeff. 

 (1894 as a subgenus, 1899 as a genus) . 



Prof. Silvestri informs us, in litt. } that he considers that 

 Cylindrohdus and Diploialus, Berlese, 1886 (2) are synony- 

 mous, the latter having precedence. This conclusion, how- 

 ever, does not meet with the approval of all continental 

 authorities. 



6. C. silvavum (Meinert). 



Syn. ? I. jmnctatus, Leach. 



15-25 mm. 



An animal commonl}' found between the bark and trunk of 

 rotting logs. The caudal process is club-shaped. 



"'<■ ? , in a collection from Dove and Mill Dales, R. 8., 

 21/iv./14 (J.) ; 1 ? , near the R. Dove, ourselves, ix./16 ; 

 botli sexes, Bakewell district, ourselves, 1918 ; several, 

 including 1 J, Manners Wood, near Bakewell^ W. B. & 

 S. G. B.-B., G/vi./18. 



7. C. Iritannicus (Verhoeff, 1891). 



Syn. Lfrisioules, Verhoeff, 1892. 



I. htscus, Meinert, as used by Bagnall and by ? Jackson. On 

 this point see Bagnall's note (1) and our own (3). 



16-18 nam. 



