160 Dr. A. Jefferis Turner's Observations on 



are stalked, but in Culama expressa, Luc. (fig. 22), which 

 should form the type of a new genus,* all the veins arise 

 separately from the areole. Both forms have the tibial 

 spurs well developed, as have the allied Neotropical genera 

 Schausiana, Si rand (Hemipecten, Dyar), and an undescribed 

 genus (sp. norax, Druce), which differ from them in minor 

 points only. The former has the antennae unipectinate in 

 both sexes. 



The section of the Cossidae with hypertrophied areole 

 giving origin to vein 11 form a large proportion of the 

 family, and, so far as I know, no similar structure occurs 

 elsewhere in the Lepidoptera.'f It may be explained in two 

 ways : (1) the origin of the chorda has been displaced 

 towards the base of the wing — that this has occurred is 

 shown by the increased length of the areole ; (2) the basal 



part of vein 11 may have 

 partly coalesced with the 

 common stalk of the re- 

 maining radial veins (the 

 radial sector) and with the 

 common stalk of the 1st 

 and 2nd radial. The latter 

 factor has been also in 

 Fig. 10.— PJvragmatoetia parvipuncta, operation, and it explains 

 Hmps. the displacement of the 



origin of 11 towards the 

 apex. The relative part taken by the two factors could be 

 approximately determined by comparative measurements. 

 There are in the genus Phragmatoecia two types of 



* Macrocyttara, gen. nov. Frons with anteriorly projecting 

 scales. Palpi moderately long, projecting beyond frons, longer 

 in . smooth-scaled; terminal joint stout, obtuse, in $ very short, 

 in lather long. Antennae bipectinated to apex in both sexes; 

 or in J <»nly. in j simple. Thorax with a small posterior crest. 

 Tibiae with all spurs present and well developed. Fore-wing with 

 areole very large, median vein branching about middle, lower 

 branch ending between 4 and 5, upper between 5 and 6; 2 from 

 towards cud of cell, .*! from angle, 4 and o separate, 6 from near 

 upper angle, 7, 8, 9, 10, and 11 arising separately from areole. 

 Hind-wings with median cell narrow, lower branch ending between 

 4 and 5, upper between 5 and C>, where discocellulars are sharply 

 angled inwards; 2 from about |, 3 from angle, 4 and 5 widely 

 separate, (i and 7 stalked from upper angle, 8 tree. 



"i" Except, as pointed out to me bj .Mr. I)urrant. the Tortricid 

 Phtheochroa. In the Drepanidae II sometimes arises from the 

 areole, bul in this instance I I arises from much nearer the apex. 



