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



a proper exploration of our English caves, and this note may 

 serve as a reminder to naturalists who visit caves for the 

 purpose of studying other branches of science. 



II. Detailed Records 1 . 



Class DIPLOPODA. 



Subclass Ghilognatha. 



Family Glomeridse, Leach, 1814. 



Subfamily Glomerinjs, Verhoeff, 1910. 



Genus GLOMERIS, Latreille et Leach. 



1. G. marginata (Villers, 1789). 



10-20 mm. 



This is the common pill-millipede. It is black dorsally, 

 bub the pleurotergites are edged with white. 



*Cave Dale, R. S., in a recent year (J.), G. 3113 ; *Castle- 

 ton, R. S., vi./13 ; *Dove Dale, R. S., J. W. J., C. R. B., 

 25/v./16; near the R. Dove, ourselves, 1916; Bakewell 

 district, ourselves, 1918 ; one example, Manners Wood, near 

 Bakewell, W. B. & S. G. B.-B., 6/vi./18. 



In addition to the above examples we have examined 

 specimens from Millers Dale which do not appear to be 

 typical. In spirit-specimens the dorsal surface of the body 

 exhibits a row of light spots on either side of the middle line, 

 due to the fact that the lateral parts of each pleurotergite are 

 marked by definite light oval areas. The dimensions are the 

 same as those of the typical form. We think it inadvisable, 

 however, to establish a new variety on the material at our 

 disposal until, at any rate, we have made a detailed study of 

 the English representatives of the genus. 



Seven examples, Millers Dale, E. S., 17/vi./17. 

 Types. 1302, Brade-Birks collection. 



2. G. marginata perplexa, Latze!. 



6*5 mm. 



At present we think it advisable to treat this form as of 

 subspecific rank. Mr. Bagnall says (l) of this animal, " [ 

 cannot think that it can be a form of marginata, and connesca 



1 The typical length of th« species is given in each case as a guide to 

 those interested in the group. Where the dimensions are not our own, 

 we are indebted to various authors. 



