Notes on Myriapoda. 199 



with less tlian seventy borly-segmeiits, tlie latter those with 



more than seventy. In the toinier subfamily be places Poly- 



zonium germnnicxkin^ and gives a detailed description of the 



genus and species, devoting tiie whole of his plate xvi. 



(figs. 199-210) to the latter. Since Latzel's time further 



systematic woric has been done in this group ; some indication 



of its extent may be gathered from VerhoefT's work on 



German Diplopoda, (5) p. 23. The same author criticized 



Latzol on Folyzonium as early as 1898, and gave (4) an 



account of the species which the present note records, together 



with a figure of the gonopods (iiis plate vii. fig. 11). As 



M. Brolemanu has pointed out to me in /ttt., we find that in 



the anterior gonopod the coxal lobe (L in the figure cited), 



which in the animal itself is a definite structure quite easily 



seen, is not represented at all clearly in Yerhoiil's figure. 



That this may be due more to incorrect reproduction than to 



the fault of the author is shown by VerhoeflE's statement in 



the text {loc. cit.) : — " Gegeniiber den andern beiden Arten " 



[i. e., P. hosnieni>e, Verhoetf, and P. transsilvanicum, Ver- 



lioeff] "ist germamcum ausgezeichnet durcii (Abb. 11 ) das 



emporr'agende 3. Tarsalglied, dessen aiifragende Spitze E, 



den Nebenhippen, dessen Kand in feine S[)itzchen zerschlitzt 



ist (nicht 'gekerbt') das deutliche Femoralglied und den 



Hcicker L des Ei!d!a))j)en3 der Hiiften, welcher kaum vorragt 



und innen etwas ecldg ist." 



Verhotff, in a later work (5) already quoted, gives an 

 instructive account of the comparative anatomy of the gioup 

 10 which Polyzonium belongs. Sinclair (3) and Pocock (2) 

 have both dealt briefly with the Colobognatha in English, 

 and the former gives a useful figure of Polyzonium germani- 

 cnm showing the general pioportions of the whole animal. 



Field Notes and other Observations. 



Polyzonium can be distingui.shed readily in the field from 

 all other British genera by its cliaracteristic semicylindrieal 

 shape ; whereas the dorsal surface of the animal is convex 

 from side to side, the ventral surface is practically fiat. 



Latzel gives the dinnnsions of P . germanicuvi as 5-15 mm. 

 long and 1*1-2 mm. wide. 



The walking-legs perform their work with the same wave- 

 like motion that is noticeable in so many other millipedes. 



Wlien disturbed the animal curls itself up like a clock- 

 spring, and generally remains quite a long time in that 

 position. 



Since this species is widely distributed on the continent, it 

 is inleresting to take it first in Britain in thatpait of England 



