ACANTHOPSYCHE RITSEMAE. 91 



a very strange form. With the exception of cell 4 , and 

 the exterior part of cell 5 and 6 , which are hyaline , the 

 hind wings are covered with brovvu-fulvous scales. 



The veining of the wings is very remarkable. There are 

 eleven branches running to the margins of the fore wings. 



la, lb and 2 agree with those of the genus Psz/cAe Schrk, 

 4 and 5 are united into a fork; 8 is emitted from the 

 middle of 7 and reaches the apex ; 9 is also emitted from 

 7 , but more backwards ; 10 comes from the upper exte- 

 rior angle of the discoidal cell, which is very broad but 

 relatively short and divided in two parts by a thin vein, 

 neither forked in the fore nor in the hind wings; of these 

 parts the superior one is longer and more acute than the 

 inferior one; 11 is entirely free. 



In the hind wings there are only seven marginal bran- 

 ches, la, 16 and Ic are as usual, 2 also; 3 and the for- 

 ked 4 and 5 are very short, because the inferior part of 

 the discoidal cell , from which they are emitted , is much 

 longer than the superior part, and its lower exterior angle 

 almost reaches the external margin ; 6 comes from the upper 

 exterior angle of the cell mentioned and 7 is entirely free. 



The place of this new species of Psychid is, after Psyche 

 Ecksteini Led. , in the genus Acanthopsijche Heylaerts, group 

 C, Amicta Heyl. (vide my „Monographie des Psychides": 

 Annales de la Soc. Entom. de Belgiqiie, 1881). 



I have named the new species in honor of my friend, the 

 learned and zealous conservator of the Ley den Museum. 



Breda, March 1881. 



Notes from the I-.eycleii JMuseuiw, A'ol. 111. 



