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XVIII. New and little hioum species of Drepanulidoe, 

 Epiplernidai, Microniida? ((M(1 Geometridas in the 

 National Colleetion. By Colonel Charles 

 SwiNHOE, M.A., F.L.S., F.Z.S., etc. 



[Read April 16tli, 1902.] 



At the request of the authorities of the British Museum 

 I undertook last winter, when living in London, to work 

 out the unnamed species of the Eastern and Australian 

 Drepauulidce, Epiplemidie, Microniidse and Geometridije in 

 the National Collection, and this paper is the result. 



At Sir George Hampson's request the Hon. Walter 

 Rothschild kindly sent to the British Museum, for com- 

 parison, all Mr. Warren's types, and Professor Poulton was 

 good enough to lend the Walkerian types in the Oxford 

 University Museum. 



Out of the many hundreds of Warren's typos I have 

 made notes of a few the names of which must fall ; and 

 have given lists of those not in the British Museum, to 

 show the blanks that want filling up in the National 

 Collection. The species not mentioned in this paper were 

 found in the Collection and named. 



The resemblance in pattern and coloration of many 

 species, widely differing from each other structurally, is 

 very noticeable in the Geometridoe, especially amongst the 

 Sterrhids (Acidalids), and this family is well worth the 

 careful study of any Biologist intei'ested in the convergence 

 of superficial characters. To instance a few: 



Eugnesia correspondens, Warr., Nov. Zool., iv, p. 77, is 

 exactly like Synegia camptogrammaria, Guen., but the 

 former has simple antennse in tlie male, whereas in the 

 latter they are bi-pectinate with short stiff bristles. 



Pisoraca sordidata, Warr., 1. c, iii, p. 376 ; Xenoprora 

 parallela, Warr., iv, p. 195, and Perixera grisca, Warr., vi, 

 p. 336, are all of one pattern and colour, but differ greatly 

 in structure. 



Brachycola pwueinotata, Warr., viii, p. 22, resembles very 

 closely Perixera ahseonditaria, Walker, but can at once be 

 differentiated by the structure of the legs. 



TRANS. ENT. SOC. LOND. 1902. — PART IIL (NOV.) 



