THE CANADIAN ENTOMOLOGIST. 301 



ON SOME UNDETERMINED BOMBYCES. 



BY HARRISON G. DYAR, NEW YORK. 



Thia (Thelethia) extranea, Hy. Edw. 



Mr. Andrew Bolter, of Chicago, has kindly sent me the type of this 

 species for examination. It proves to belong to none of our families of 

 Bombyces, as I had suspected. (See Journal N. Y. Ent. Soc, L, 98). 

 On comparing the venation with Pseudanaphora arcanella, Clem.,* I 

 find it to be essentially the same, differing only in details. Vein 2 of the 

 secondaries is more remote from vein 3 in Thia than in Pseudanaphora, 

 the lower fork of the discal vein ends between veins 4 and 5 instead of 

 at origin of vein 4, and veins 5 and 6 arise from a common point instead of 

 being well separated. Vein 8 (costal) present in both, strong, distinct, free, 

 not 'apparently none.' On the fore-wings the venation is very similar in 

 both. The second internal vein (submedian) is weak ; the first strongly 

 furcate at base. All the venules free, unbranched. Subcostal vein very 

 remote from the costa, all closely as in Pseudanaphora. 



The fore-wings of this little moth are closely and heavily scaled 

 above, glossy black ; below of a gray brown, the veins slightly discolor- 

 ous, the costa and fringe black. Hind-wings nearly hyaline, with but a 

 few scattering scales ; the fringe well developed, black. 



Body parts black, the tongue pale, contrasting. 



As the name Thia has been used before in entomology, the present 

 Tineid genus may be known as Thelethia. 



Cisthene (Clemensia) lactea, Stretch. 



Mr. Beiiienmuller has discovered a specimen of this species in the 

 Edwards collection, without label. So far as I have been able to examine 

 it, it does not violate the characters of Cisthene, but its coloration is so 

 different from the other species of the genus that I would prefer to place 

 it in Clemensia, with which it agrees perhaps equally well structurally. 



Pseudopsyche (Oedonia) exigua, Hy. Edw. 



According to the present arrangement, the synonymy of this species 

 is as follows : — 



Family, Psychid/e. 



Genus, Oedonia, Kirby. 



'Determined by Prof. C. H. Fernald. 



