:'.-2.S Dr. ^'ic tlio Kov. S. Gi-aliain Bradc-Birks on 



H). /?. qnnrfmn, Hijule-Birks ((o Uo describe 1 later in tlie 

 present |)aj)er). 



$ 7-8 nun. 



While eoliocting on a .slope by the side of the Ashford 

 road, close to the town of Bakewell, one of us (//. K. B.-B.) 

 came across a specimen of a square-backed millipede which 

 we recoonizeJ in the field as belonging- to the family 

 Brachyclia?teumida?. Allhouoh we searched carefully not 

 only both of us on this, but also one of us on another occasion, 

 v/e failed to collect anolh'^r example. It became clear upon 

 examination with (he microscope that this specimen could 

 not l)e referred to any of the three known sj)ecies ; a descri[i- 

 tion is therefore given in another part of this paper. 



1 ? , near Bakewell, //. A'. B.-B., 29/v./l8. 



Family Craspedosoniidas, VerhocfF, 1900. 



Subfamily Cua^pevosomin^, Veihocff, 1900. 



[Tribe CR.VSPEDuSOMINI, ^'(n•lK)eff, 1909. 



Genus PoLYMIClJObOX, VerhoefF, 1897. 



Subgenus Polymicrodon (s. sir.), Vevlioeff, 1897. 



17. P. latzeU (VerhocflF, 1891). 



Svu. Atractosoma latzeli, Verhoeff, 1891. 

 ? Afractosoma poh/desmoides, Leach. 

 ? Atractosoma Intzeli (/allicum, Verlioeff, 1895. 

 ? Craspedosovin latzeli gallicnm, Vcrhoetl", 1896. 

 ? Polijinicrudon /atzeii (/allicum, Verhoeff', 1897. 



17-18 mm. 



A flat-backed animal with thirty body-segments. We 

 have little doubt that this species should l)e called P. pohj- 

 desmoides (Leach), but until the type-specimens of Leach's 

 animal are examined it seems unwise for us to make the 

 alteration. The characteristic gonopods are figured by 

 Yerhoeff (12), and those of P. latzeli gallicum, which is 

 perhaps a synonvm, by llibaut (il). 



*6 6 , Oave bale, R. S., in a recent year (J.), G. 3147. 

 We also took specimens almost certainly referable to this 

 species in the Bakewidl district, 1918, but there v.ere no adult 

 males for definite diaiinosis. 



