401 Dr. II. A. Baylis on 



Hiiul win^ yrllowisli bull', scmivitroous on disc, a broken 

 subiuarijjiniil dusky line. 



(^ (ab. sordida). Black sealiuj^ much intensified, almost 

 swamping entirely the <;roiin(l-colour ; hind wings suftused 

 entirely with grey. 



$. Similar to (J , but deeper goldeu-bulT ground-colour 

 and varying much in extent of black s-x-aiing; $ {nh. sor- 

 dida) entirely dark brown, nervnrcs blackish. 



Lcn-j:tli of fore wing, ^ 16-17, ? 20-22 mm. ; expanse, 

 ^ 40-42, ? 46-52 mm. 



2(Jc?,89?(lc?,l?, ab. sordida) bred, " Jnnin, Andes 

 of P(MU. 1 K)0 ft." 



33. Palustra postflavida, sp. n. 



$ . Antenna; dark brown ; head and thorax brown 

 sj)riiikled with yellowish hairs ; abdomen above blackish 

 brown with goldeti-ycUow rings, basal segments with long 

 bi'own hairs, anal tuft bufiy-orange. 



Fore wing uinber-browu, very s[)arsely sprinkled with 

 paler scales, two i)ostiiiedian darker brown shadow bands, an 

 arrow-shaped black discocellular stigma. 



Hind wings with only one postdiscal darker band. 



Length of fore wing 2.5 mm.; expanse 57 mm. 



1 $ bred, '• Junin, Andes of Tern, 1 1'jOOO ft." (pupa rufous- 

 brown, broad, and truncate). 



LVII. — Notes on some Parasitic Nematodes. 

 By II. A. Baylis, M.A., D.Sc. 



(Piiblislied by penuission oi the Trustees of the British Museiuu.) 



I. — On the Genus Wellcomia, Sambon, and a new 

 Spi:cn:s of that Genus. 



Wellcomia samhoid, sp. n. 



Host: hairy j^orcupine (Coendou [S/dniifjurus] villosus)*. 



Position : intestine. 



Locality : Paraguay. [The animal had been in captivity 

 in the Zoological Society's Gardens, London, for thirteen 

 months.] 



The matciial npon which this note is based was collected 



* Mure correctly C. couiij, Desni. 



