50 WILLIAM G. DIETZ, M. D. 



As already pointed out by Mr. Busck,* this species is entirely 

 distinct from pellionella L. ; the type at the Academy of Natural 

 Sciences of Philadelphia is in good condition (one pair of wings 

 only) ; the fuscous dustings of the forewings especially along the 

 costa and in the apical portion ; the spot at end of cell is transverse. 

 Similar to grumella Zell., which it also resembles in the pale lines in 

 the apical part of the wing, but it lacks the marginal spots of that 

 species and the plical spot is absent; aside from these, it is an alto- 

 gether darker species; veins 7 and 8 of forewing are stemmed. 



T. griseella Oh.— Dyar's List, p. 572, No. 6520, syn.— " Palpi brown ; head 

 and antennae sordid yellowish gray; head and antennae brownish gray, with a 

 small brownish spot within the dorsal margin before the middle, another still 

 more faint on the disc, and a more distinct one at end of the disc. Alar. ex. T 5 g 

 inch. Kentucky." 



The above is Chambers' description of a species which has hereto- 

 fore been referred to in our lists as a synonym of pellionella L. 

 However, since I have examined the type in the Cambridge Museum 

 collection, I must consider it a distinct species which does not tally 

 well with the author's description, and which therefore I take leave 

 to supplement as follows : 



Labial palpi ochreeus, tinted with fuscous without, third joint fuscous within. 

 Head ochreous russet. Forewiugs like those of pelliomella in shape, sordid ochre- 

 ous, with numerous, irregular transverse lines, more distinct in outer half of 

 wing; a dark dash immediately below the fold at two-thirds of its length, an 

 ill-defined, slightly curved line in the subplical space at two-fifths of the fold ; 

 hind wings over 1, costa scarcely emargiuate; second discal spot distinct. The 

 dash below the fold is no doubt the "small brownish spot within the dorsal margin. 



T. grumella Zell. — Dyar's List, p. 572, No. 6570. — Maxiliary and labial 

 palpi ochreous, the latter of moderate length, slender; terminal joint one-half as 

 long as the second, the latter fuscous above and beneath. Head dark russet; 

 antennae pale furcous above, paler beneath. Thorax ochreous, dusted with fus- 

 cous and having a somewhat metallic lustre ; patagia dark brown at base. Fore- 

 wings elongate, pale grayish ochreous, thinly dusted with fuscous, with consid- 

 erable lustre, extreme costa dark fuscous towards the base, the dusting more 

 dense from the base of costal half of wing, the part beyond the cell evenly and 

 thinly dusted, with pale lines corresponding to the veins. A large transverse 

 spot at end of cell and from which a dark shade extends to both margins ; mid- 

 way between this spot and base of win°: is a small first discal dot, nearer to costa 

 than dorsal margin; at two-thirds of the fold is a spot which extends as a line 

 towards the base; subplical space, very thinly dusted with dark scales; a row of 

 distinct, dark spots along the base of the costal and dorsal cilia, latter pale fus- 



* Trans. Ent. Soc. Wash., Vol. V, p. 185. 



