82 Mr. R. S. Bagnall on 



occurred more frequently than in October, probably because 

 the undergrowth was less dense and I had better opportunities 

 for this class of collecting. 



On this latter visit I spent some hours exploring Kent's 

 Cavern with my friend Mr. J. Williams Vaughan, where 

 B. melanops was one of the dominant myriapods ; it occurred 

 in the inmost depths of the caves and in all the galleries. 



The Re-discovery of B. bagnalli. 



Although I repeatedly searched for B. bagnalli in Gibside, 

 I was never able to turn up further examples ; but shortly 

 after my return from Swanage and the discovery of B. me- 

 lanops Mr. H. S. "Wallace gave me a tube collected in 

 a garden at Haddrick's Mill, Newcastle-on-Tyne, in the 

 last week of April 1918, which contained six examples of 

 B. bagnalli, 5 ? ? and 1 £, and a ? example of another 

 recently described millipede, Monacobates tenuis, Bigler*. 

 I accordingly accompanied my friend to Haddrick's Mill, 

 where we took several examples of both sexes in and 

 about the precincts of an old quarry; and subsequent 

 visits proved that. the species was well established and not 

 uncommon. 



Later I found a little colony under a log in a garden at 

 Fenham, another residential part of Newcastle 2 miles or 

 more distant from Haddrick's Mill, and only this month (May) 

 Mr. Wallace found a female example at Hexham, where I 

 ultimately turned up both sexes, and thus established its 

 identity. 



Ecological Notes. 



In the cited discoveries of B. melanops and B. bagnalli I 

 noticed a certain definite association of allied forms, and if 

 zoologists find certain of the millipedes or centipedes named 

 below there should be a chance of meeting with Brachy- 

 chazteuma. 



For the uninitiated I should add that Stigmatogaster 

 subterranens, Clinopodes linearis, and Chatechylene vesuviana 

 are large Greophilids, a family of long slender centipedes, 

 generally yellow or yellowish-brown and bearing a large 

 number of legs. Chordeumella scutellare is a " square-backed " 



* Bigler, Walter, " Die Diplopoden von Basel und Umgebung," Bev. 

 Suisse Zool. Geneve, xxi. pp. 675-793, pis. xvii.-xix., 1913. 



Bagnall, B. S., " Becorcta of some new British Diplopods and Pauro- 

 pods, with a Preliminary Check List of the British ' Myriapoda,' " Journ. 

 Zool. Bes. iii. pp. 87-93, Oct. 1918. 



