ENTOMOLOGICAL CONTRIBUTIONS. 155 



XIII. LARVAL NOTES ON ANISOTA SENATORIA (SMITH). 



Moths were observed at Center, N. Y., July 7th, depositing their 

 eggs on the under surface of leaves of oak, in regular distribution in 

 a single layer, and in contact with one another. A leaf of Quercus 

 prinoides of ordinary size was collected, having one-half of its surface 

 covered with the eggs. From a count of a portion of the deposit, the 

 whole number was estimated at five hundred ; still larger patches 

 have been observed. From the number usually occurring in these 

 deposits it may be presumed that the moth places all her eggs on a 

 single leaf unless disturbed during the operation. 



The eggs hatched July llth. The head of the young larva is oval 

 and glossy black. The body is pale yellow-green, with a few short 

 hairs; on the second segment are two smooth, straight, subcylin- 

 drical, black horns, arising from a green base, and with a slight enlarge- 

 ment at the apex, where they give out two black diverging setse of 

 the length of two-thirds that of the horn. 



The young larvae feed in company, and occupy both surfaces of the 

 leaf, the entire substance of which they consume, except the veins 

 and veinlets, leaving frequently a very good skeleton of the leaf. 



The first 'molting occurred on the 18th and 19th of July. At this 

 stage the body is obscure green with seven fuscous lines, of which 

 the dorsal and stigmatal ones are narrow ; the subdorsal and lateral 

 ones broader, having in them a row of short spines. Collar centrally 

 and anal segment, shining black. Legs, black; prolegs, witk a 

 black spot outwardly. 



Second molt July 28th and 29th. Length of larva, 37-100ths 

 of an inch. Head and collar, glossy black. Horns, slightly spinose, 

 enlarged at the tip, and usually with apical spines. The abdominal 

 stripes are black, with yellow-brown intermediately, showing a broad 

 stigmatal stripe. The terminal segment is spinose, and of a glossy 

 black. 



Third molt August 4th and 5th. Length, six-tenths of an inch. 

 The larva is glossy black, with eight yellow stripes, of which the lower 

 one is geminated by a crescent on the central portion of each seg- 

 ment inclosing a spinule ; ventrally from the fifth segment is a yellow- 



