108 • Rev. S. Graliam Brade-Birks — 



XXVI. — Notes on Myr'iapoda. — XXI, Colubognatha, on 

 Order of Diplopoda [Mi Hi pedes) new to Britain, represented 

 hy Polyzoiiiiim geniiHiiiciitn (Brandt). By tlie R«v. S. 

 TfRAllAM BuADK-BiRKS, M.So., Lecturer in Zoology and 

 Geology, S.E. Agricultural College, Wye, Keut. 



On tlie occasion of a visit that tlie Lecturer in Agricultural 

 Zoology here — Mr. C A. W. Duffiehi — and the writer |»;iitl 

 to the juniper "Wood, Wye, on the afternoon o£ the 24ili of 

 October, 1919, I took a millipede referable to the gi-nus 

 Puh/zoniiint, Brandt, 183-4. It appears that the order to 

 wliich this genus belongs has been unrepresented hitherto in 

 the faunal lists of the British Isles. 



During November 1919 Mr. Duffield and I took a number 

 of specimens of the same animal on subsequent visits to the 

 wood, and one specimen was also taken there on the 13tli of 

 December. 



Upon the dissection of some male specimetis for the exami- 

 nation of secondary sexual characters of taxonomic impoi tance 

 and tlieir comparison Avith those given by Latzel (l) in his 

 tiyures of the species I^. gertnunicum (Brandt, 1831), it was 

 tound that some points of agreement were very noticeable. 

 At the same time I felt doubtful about the diagnosis, and 

 thought it advisable to send a male specimen to IMonsieur 

 Henry W. Bioleniann, the eminent French myriapoilologist, 

 who, with a courtesy now proverbial in his circle of English 

 Iriends, made a careful examination of the aninuil and a 

 sketch of the gonopods, together with a note on one of 

 Verhoeil's papers (4). This assistance, subniittad to me in 

 litt., makes my present task a light one, and 1 here express 

 my best thaidiS to M. Brolemann for his valuable help. 



M. ]'rolem<inn definitely referred the male I sent to him to 

 the species Poh/zouiuvi germanicinn, a member of the family 

 Polyzoniida% Gervais, 1844, order Colobognatha, Brandt, 

 J 834. Latzel (i) describes the Colobognatha an order 

 ditlciing from the Cliilognatha in the structure of the mouth- 

 jiarts, which are modified here to a greater or less extent with 

 I lie suctorial function of the rostrum into which the circum- 

 ural region is produced. Latzel adds an account of the family 

 Tolj-zoniidie, which he divides into two subfamilies — the 

 riatydesmiaand theDolistenia*, — the lormer includinggencra 



* Latzel {he. cit.) tells us that iJrniidt lind proviuuslv subdivided the 

 family into OiiiiUHtophora and 'J'yphldf^eun, tbo fonuor coutaiiiiiig the 

 genera with oyes, the latter including all without. 



