My ria pod a from Derbyshire. 327 



the secondary ramus. The seminal ramus presents the usual 

 features; the small tooth (y) of the external face is well-' 

 developed. 



1 c? (and ? other material), near the R. Dove, ourselves, 

 ix./16. 



Genus Brachydesmus, C. Heller, 1857. 

 Species B. superus, Latzel, 1884. 

 14. B. superus mosellanus, Verhoeff, 1891. 

 8-5-9 mm. 



The genus to which this animal belongs has nineteen body- 

 segments. The present variety, with typical gonopods in the 

 male, seems to be the common English form. We have 

 dissected specimens from both the localities mentioned below. 

 In the garden of Beech House, Great Longstone, we met 

 with large numbers of the animal. 



Buxton and Bakewell districts, ourselves, 1918. 



Genus Ophiodesmus. 

 15. 0. albonauus (Latzel). 

 Syu. Parades mus albonanus, Latzel. 



4*5 mm. 



This minute square-backed millipede (our spirit-specimen 

 is 4*5 mm. long) will probably prove to be not uncommon in 

 Britain. Dr. Brolemann kindly confirmed the species by 

 examining a drawing of the gonopod dissected from a speci- 

 men collected in another part of the country by our friend 

 Mr. Bagnall, wlio was good enough to send it to us, correctly 

 labelled. The example recorded below was adult, being 

 furnished with the characteristic gonopods of the species. 

 We suspect that the animal occurs in the garden of Ashford 

 Vicarage, but we failed to obtain adult males there in spite of 

 careful collecting. 



1 cf, in the garden of Mis. Thornhill's home, Beech House, 

 Great Longstone, ourselves, 19 i 8. 



Family Brachychaeteumidae, Verhoeff et Brade-Birks, 

 1911, 1918. 



Genus BRACHYCHiETEUMA, Verhoeff et Brade-Birks, 

 1911, 1918. 



Syn. Owing to errors in YerhoefFs original description we established 

 lacksoneuma, 1917, to receive a new species BrachycJiceteuma 

 bradecc (Brolemann et lirade-Birks, 1917) (5). In the light 

 of new material of the genotypical species, lacksoneuma 

 becomes a synonym of Brachychccteuma. 



