MISS KATHLEEN HADDON ON PERIPATOIDES WOODWARDI. 611 



38. Notes on Peripatoides woodwardi Bouvier. 

 By Kathleen Haddon *. 



[Received April 11, 1913 : Read May 6, 1913.] 



This species has been described by Prof. Bouvier t. It may 

 readily be distinguished from other Austi^alian species by the 

 fact that it has 16 pairs of legs; in this respect this species and 

 P. siUeri from New Zealand are unique among all the Australasian 

 Peripatoides. 



The material was obtained through Prof. J. Stanley Gardiner, 

 from Western Australia. 



There are twenty specimens, well preserved and extended, but 

 they tend to be rather bent, thus making exact measurement 

 difficult. The approximate measurements (in millimetres) are as 

 follows : — 



Females ... 46, 43, 43, 41, 37, 37, 33, 23, 21, 17. 

 Males 31, 30, 30, 29, 27, 24, 24, 24, 23, 22. 



It will be seen, therefore, that these specimens are considerably 

 larger than those described by Prof. Bouvier J, the greater 

 number of which measured from 10'5 to 17 mm., only one 

 reaching the length of 21 mm. 



Bouvier recognises the following types of coloration : — 



1. Uniform, with predominance of blue-green pigment, 



yellowish pigment being strewn in spots equally dis- 

 tributed over the dorsal surface. 



2. Striped, with the yellow spots more numerous, sometimes 



becoming predominant, and forming a longitudinal 

 band, with or without dark papillse, on each flank above 

 the base of the legs. 



A variation of the first type had the ground colour light 

 reddish yellow, almost all the papillse being darker, at any rate 

 at the summit ; some were quite black and arranged in short 

 transverse rows. Thus the general tone was a dingy grey-black 

 with small spots of yellowish pigment round some papillse. 



A variation of the second type showed a yellow-red ground 

 colour, with stripes of dark papillse in transverse rows in the 

 dorsal region and no mixtui-e of dark pigment in the lateral 

 stripe. 



All his specimens showed two large light-coloured papillse on 

 the flanks between each paii- of legs, arranged parallel to the 

 long axis of the animal. 



These types are all represented in my specimens and also all 



* Communicated by Prof. J. Stanley Gardinek, M.A., F.R.S., F.Z.S. 

 t 'Die Fauna Siidwest-Australiens,' Bd. ii. No. 18, Onychophora. M. E.-L. 

 Bouvier. Jena, 1909. 

 X Loc. cit. p. 315. 



Proc. Zool. Soc— 1913, No. XLI. 41 



