162 THIRTIETH REPOKT ON THE STATE MUSEUM. [50] 



Hyppa xylinoides, commencing the latter part of July, con 

 tinued through all of August and September into the early 

 part of October. 



Luperina reniformis continued throughout August and 

 September, and reappeared in the last half of October. 



Leucania unipuncta, after the appearance of a single individ 

 ual on two evenings in July, was present each evening for the 

 space of two months. It was one of the most common moths 

 at sugar, and was nearly always in remarkably good condition. 



AmpMpyra pyramidoides. appearing first on July 17th, 

 continued, not every evening, however, for more than two and 

 a half months. 



Orihosia ferrugineoides was constant in its presence, and 

 also an abundant species from its first appearance until the 

 close of the season. 



Orthosia helva was confined to the month of August, but 

 was uniformly present after the 5th. 



Of the Xylinas, laticinerea was the last to appear. It was 

 in abundance and in perfect condition at the cessation of su 

 garing. It was the first to appear the ensuing spring (1876), 

 on the 11 th of April, followed a few days thereafter (April 25) 

 by X. Betliunei. 



Erastria carneola had along duration, and was very seldom 

 absent, although never appearing in large numbers. It con 

 tinued until late in September. As it is known to occur in 

 the month of May, its four months presence with us is evidence 

 of a succession of broods, as is also shown in the freshness of 

 examples collected at various times throughout the season. 



Catocala parta continued for a very long time, having been 

 taken on fifteen evenings in the months of July, August and 

 September. 



C. ultronia was the most abundant of the Catocalas, and, 

 although not soen in the month of September, was observed 

 on eighteen evenings during the preceding two months. 



Homopyralis tactus was a remarkably constant visitor, hav 

 ing been unobserved on one evening only for nearly two 

 months. 



PseudotTiyatira expultrix was present each evening of the 

 month commencing July 15th. 



The following table shows the period of duration of several 

 of the species and their comparative constancy of attendance 

 at sugar. 



