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DESCRIPTIONS OF TWO NEW COLIAS AND SOME 

 AFRICAN SYNTO-WIDAE. 



By WALTER ROTHSCHILD, F.R.S., Ph.D. 



Colias mossi sp. nov. 



This is a most extraorclinary discovery, as the species is unlike any other 

 American Colias. It is hardly distingnishable above from Coh'as eocondirri 

 tdirurlana Stdgr., though abundantly distinct below. 



(?. Antennae chocolate-brown tinged with rose-colour ; head and thorax pnle 

 olive-o-reen, hinder lialf of thorax with a mixture of long white hairs ; abdomen 



pale olive-green, basal third clothed with white hairs. Forewing olive-blacl-, 



basal two-thirds strongly and densely clothed with pale olive-green scales ; stigma 

 black, base of costa rose, fringe whitish green, a snbmarginal row of pale olive- 



(rreen oblong streaks. Hindwing olive-black powdered with pale olive-green 



scales ; abdominal area, fringe, and snbmarginal streaks pale yellowish green : 

 stigma yellowisli. 



Underside; forewing blnisli grey, slightly powdered with apple-green scales, 

 apical fourth ajiple-green ; liindwing apple-green wasliud with verdigris-green, 

 stigma white. 



Length of forewing : 24 mm. 



Hah. 1 S, «an Marco, Pern, 3200 metres = 12,4S() ft., November 22, l'.)U(l, 

 rainy season (Simons), type :1c?, Oroya railway. Pern (Rev. A. M. Moss). 



Colias euxanthe alticola ?-ab. virescens ab. nov. 



?. Olive-black, densely clothed with pale olive-greeu scales and liairs. 



Hah. Tirai)ata, Carabaya, S.E. Pern, 12,700 ft., January— February lOol 

 (G. TJ. Ockenden). 



This aberration resembles nastcs in colour. All intergradations between 

 fireiicans and normal white or orange ? ? were taken by Mr. Ockenden. 



SYNTOMIDAE. 



Metarctia postrosea sp. nov. 



<??. Differs from liitca Hoil. in the more bnlf ground of forewings and in 

 the iiitra-neuriil spaces being mostly filled np with chocolate-grey. Hindwing 

 jiaie carmine, not orange-buff. P>ody and antennae orange-buff, not ochraceons 

 orange. 



Length of forewing: i lo-i") mm. ; ? 19 mm. 



Ihh. Near Lagos, Oni Camp, April 25, 1012 (\V. A. Lamboru). Type, 6. 



Metarctia aiirantiifusca sp. nov. 



?. Allied to fiai-irfl//.i limps. 



Ground colour ochraceons golden orange; nervnres of both wings, fringes, 

 and some intra-nenral spaces fuscous sooty black. 

 Length of forewing : Ix nun. 

 /fab. Lagos, March •">, 1012 (W. A. Lamborn). 



