THYRIDOPTERYX EPHEMERAEFORMIS. 129 



NOTE XIX. 



ON THE EXOTIC PSYCHIDS IN THE LEYDEN 

 MUSEUM 



F J. M. HEYLAERTS. 



The collection of exotic Psychids in the Leyden Museum 

 is far from being an extensive one , as there are only four 

 species and the larval cases of two others. One of the 

 latter (notwithstanding its being unique) was worth to be 

 described. Moreover the species were not , or incorrectly 

 named and of course required revision. — Mr. Ritsema 

 kindly allowed me to examine all the specimens and to 

 publish the following results of my examination in the 

 » Notes from the Leyden Museum." 



1 . Thyridopteryx ephemeraeformis Steph. — One cf . 

 This well-known insect was labelled: Oiketicus nuda 



(Boisduval, Louisiana). 



2. Eumeta Layardii Moore. — One cf. 



This species , described and figured by Mr. Frederic Moore 

 in the sLepidoptera of Ceylon" (part VII, p. 102; Plate 

 118, fig. 2, cT, 2a, larval case) was represented by a worn 

 male specimen brought home from Solok by the Scientific 

 Sumatra-Expedition (vide ; Midden-Sumatra. Lepidoptera. p. 

 30 : Oiketicus spec). The large size , the shape and pattern of 

 the forewings , the black and stout antennae distinguish 

 it immediately. 



Formerly Mr. Hoedt had forwarded to the Museum 

 the very large larval cases of this species , found by 

 him in the Moluccas. One of these belongs to a male 



^Notes trom the Lfiyden Mnseum , "Vol. VI. 



