210 LLOYDS NATURAL HISTORY. 



Mr. Watson's new genus, Eriocolias^ is intended to include 

 the group of E. hyale, in which the border is often streaked, 

 but never spotted in the male. The principal character is that 

 the males have, on the upper side of the hind-wings, " between 

 the costal and sub-costal nervures, a patch of modified scales 

 of a smaller size, and much more numerous than the sur- 

 rounding ones, usually of the same ground-colour." In the old 

 genus Colias (our Eurymus\ Mr. Watson proposes to retain 

 the orange species in which these scales are wanting (E. 

 chrysothcme [Esper], &c.,) and the sub-groups represented by 

 Evrymus phicomone, Esper (improperly indicated as the type, 

 as it is not even one of the species mentioned in Illiger's Maga- 

 zine) ; C. kirbyi, Lewis, and C. palceno, Linn. 



Pending a critical examination of the numerous species of this 

 genus, which might probably reveal other characters of greater 

 importance among them, we content ourselves here with call- 

 ing attention to Mr. Watson's new genus, without adopting at 

 present a sub-division which would separate species so much 

 resembling each other as E. hyale and E. chrysotheme, solely on 

 a secondary sexual character, however well-marked or constant. 



The Clouded Yellows are found throughout the Northern 

 Hemisphere, as far as the Himalayas. Isolated species are 

 found in the Nilghiris ; South Africa, and in the mountains or 

 in the southern part of South America ; but they appear to be 

 entirely absent from the insular portion of the Indo-Malayan 

 Region, and from the whole of the Austro-Malayan Region, 

 the reputed occurrence of a species of Eurymus in the Sandwich 

 Islands being now regarded as an error. 



Dr. Butler's genus Scalidoncura , which includes some small 

 species found in the Andes of South America, is chiefly 

 characterised by the shortness of the upper radial nervule on 

 the fore-wings, which only separates from the sub-costal nervure 

 near its extremity. 



