92 PROCEEDINGS OF THE NATIONAL MUSEUM Vol. 117 



strong fuscous suflFusion on outer side at distal end. Abdomen fuscous 

 above, ocherous white with slight infuscation beneath. 



Female genitalia (slide 10758): Ostium membranous preceded by 

 a strongly sclerotized portion of the ductus bursae. Inception of 

 ductus seminalis very large and bursa copulatrix sclerotized postero- 

 laterally to opening. Signa two, strongly sclerotized, sickle shaped. 



Type: Masafuera: Quebrada de las Casas (Feb. 7, 1955). 



Described from the unique female type. 



A note attached to the type bears the following inscription in 

 Dr. Kuschel's hand: "on Megalachna fernandeziana" but there is no 

 indication whether the species was found resting on the plant or reared 

 from a larva feeding on it. 



Family Blastodacnidae 

 Genus Nanodacna Clarke 



Nanodacna Clarke, 1964, Proc. Biol. Soc. Washington, vol. 77, p. 125. 

 The species of Nanodacna are separated by the following key : 



Forewing with outer edge of basal patch outwardly oblique from costa to dorsum; 

 cucuUus greatly produced and recurved; signa two triangular plates. 



ancora Clarke 



Forewing sometimes with basal patch but if so outer edge inwardly oblique, 

 wing with purplish sheen; cucullus truncate; signa two elongate, lightly sclero- 

 tized areas with narrow transverse ridge .... indiscriminata, new species 



Nanodacna ancora Clarke 



Figures 96-99 

 Nanodacna ancora Clarke, 1964, Proc. Biol. Soc. Washington, vol. 77, p. 126. 



For completeness' sake I am including the distribution of this 

 species. Masafuera: cf 9, La Correspondencia, 1150 m. (Jan. 28, 1955) ; 

 cf, 3 99, Quebrada de las Vacas (Jan. 17, 1952); 9, Quebrada de las 

 Casas (Jan. 17, 1952). 



This species differs from the other included species of the genus in 

 several characters but those included in the key distinguish the two 

 most easily. 



Since the description of the species, and whUe still in Chile, the 

 type was destroyed by museum pests. Accordingly, I have selected 

 another specimen, with the same data, as a neotype. 



Neotype: Masafuera: 9, La Correspondencia, 1150 m. (Jan. 28, 

 1955) (slide 10734) (USNM 67939). 



