134 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



development, but has acquired a modification in the color-pat- 

 tern. Both genera differ from the present in the loss of a vein 

 in both fore and hind wings. 



Cyane terpsichorella, new species. 



"The Dancing Moth," Sweezy, Hawaiian Sug. Plant. Ass. Exp. Sta. 



Hull, (i, pp. 20-21, pi. iii, figs. (i-S, 100!). 



Labial palpi and face pure white; head white, tipped with light yel- 

 low. Antennas white with two broad black bands and with the tip 

 mottled with black. Thorax light yellow; patagina white. Forewings 

 light ochreous with two blackish-brown spots on the middle of the costal 

 edge, separated by a very oblique, thin white line; at the end of the cell 

 is an ill-defined, blackish-brown spot with a light, metallic bluish dash 

 above and a similar one below it. The tip of the wing is lighter ochre- 

 ous and has a thin marginal blackish brown line, followed by a white 

 line at the base of the cilia. Hind wings light ochreous fuscous. Abdomen 

 and legs dusky fuscous. 



This description is made from a perfect bred specimen; the 

 ornamentation is easily rubbed and flown specimens appear 

 much lighter. 



Alar expanse, 7.5 mm. 



Habitat: Honolulu, Oahu, Hawaiian Islands. O. H. Swee- 

 zey, coll. 



Type: No. 13121, U. S. National Museum. 



This is the species mentioned by Mr. Sweezey as "The 

 Dancing Moth" and figured in his recent bulletin. Mr. 

 Sweezey states that it is very abundant and that the larva 

 breeds, evidently more or less as a scavenger, in sugar cane, 

 pineapple, and banana. 



The moth is often seen amongst the ferns in the mountains 

 and has a peculiar habit, when first alighting upon a leaf, of 

 running around with much gj^rating; hence its name. 



Mr. Sweezey has asked me to describe this species, though 

 he has amply demonstrated his ability to determine indepen- 

 dently even difficult generic forms by his conscientious work on 

 Microlepidoptera in the above-mentioned bulletin; he has 

 been good enough to send me lately a considerable named col- 

 lection of Hawaiian micros, including cotypes of his new spe- 

 cies, all of which were correctly placed. That he should have 

 had some difficulties in ascertaining the proper generic place 

 for the present snecies is but natural, as the genus Cyaiic 

 Chambers, in the literature hitnerto has been represented by, 

 the single type species vhaliella Chambers, of North America,-, 

 and very little has been noted even about this since its orig- 

 inal description thirty-seven years ago. 



