268 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxiii. 



black triangular mottlings in the vertical suture; jaws black; setae 

 pale, rather long; Avidth, O.S mm. Body flattened, thorax a little 

 largest, joint 2 distinct and as large as the others, joint 18 rather small; 

 translucent gra}^ finely black dotted, a white dorsal Ijand, composed 

 of intrasegmental l)lotches, each of three transverse, confluent streaks, 

 distinct only on joints 5 to 11; a waved, black lateral line forming- 

 three strong segmental loops on the thorax, then at joint 5 running- 

 high and coA^ering tubercle ii, on joints 6 to 10 forming- a series of 

 oblique lines from before subdorsally to behind su])ventrally, on joints 

 11 to 13 confused blotches. A series of ))lack streaks below wart v. 

 Warts i. ii. v, and vi dull orange. Pale yellow, black edged dots 

 most distinct dorsall}' on the thorax and on joint 12 and laterall}' below 

 the ])lack band. Hairs sparse, moderate; blackish dorsally and pale 

 subventrally. Warts iii and vi two-haired, the rest single. Thorax 

 as before. 



StageV. — Head round, wider than high, very full in front, the cl3'p- 

 eus not depressed, high; labrum projecting; marked as before, but 

 the clypeus all pale; width 1.15 nun. Body exactly as before. On 

 the thorax the white dorsal line is nearly obsolete and the 8ul)dorsal 

 black line is more lateral than on the body, making the dorsal space 

 broadly pale; it looks depressed (though not really so) and difl'erent 

 from the rest of the larva. Feet pale. The arrangement of the tho- 

 racic warts is: ia and ib closely approximate, in line anterio-poste- 

 riorly; iia below, separate; iib small, remote, posterior; iii distinct, 

 posterior; iv and v closely approximate, anterior; \\ subventral, all 

 single-haired. 



,Fo(>d 2>lant. — The scurfy bark and tiny lichens growing- on the stems 

 of oak trees. Larvae from Bellport, Long Island, New York. Eggs 

 August 9. Larvie hibernating October 1.5. 



CALIDOTA STRIGOSA Walker. 



Arctki sirigosu Walker, Cat. Brit. Mus., Ill, 1855, p. 615. 



Halisidota sirig'oso Walker, Cat. Brit. Mus., Ill, 1855, p. 7o6.— Moschler, Abh. 



Senck. Ges., XIV, 1886, p. 34. — Neumoegen and Dyak, Jonrn. IST. Y. Ent. Soc, 



1,1893, p. 168. 

 JIdUsidotu cuhensis Grote, Proc. Ent. Soc. Phil., V, 1865, p. 243. 

 Halisidota laqneata Hy. Edwards, Ent. Amer., II, 1887, p. 166. — SMixn, List Lep. 



Bor. Am., p. 27, 1891, no. 1144. 

 Theages sirigom Kirby, Cat. Lep. Het., 1, 1892, p. 202. — Dyak, Can. Ent., XXIX, 



1897, p. 217. 



I have placed this speeies in Theages Walker, following Kirl)y; but 

 Hampson has shown that Theages is a synonym of Eucereon. There- 

 fore a new generic term seems required for this moth, which I pro- 

 pose as above. The genus has been limited by me ^ as Theages. It 

 differs from Halisidota by the presence of the accessory cell. 



1 Canadian Entomologist., XXIX, 1897, p. 216. 



