88 



The pupal condition was observed in three individuals during- the 

 last week of June, in hot weather, and lasted four and a half, five, and 

 five and a half days, respectivel3\ From finding several pupal cells as 

 early as June 10, it was evident that the first of the new hi'ood, or 

 generation, of beetles begins to appear at least as early as that date. 



The larva? and pupae resemble in a general way those of the preced- 

 ing species and no detailed descriptions have been made. The larva 

 when full grown measures from 6 to 6.5""" and the pupa about 5.5'""'. 

 It was noticed that the pupge moved by elevating the abdominal seg- 

 ments and bringing forward the last segment, thus giving a forward 

 impetus. The pupa? moved slowly, however, at the rate of about 1.5"'°' 

 at each step (if this expression can be used to describe the motion) 

 which is as fast or faster than the pace of the larv«. Pupa? were noticed 

 to make as many as twenty consecutive movements. 



No less than four distinct parasites have been reared from this leaf- 

 miner about the District of Columbia, All are ChalcididcO?, and the list 

 is as follows: 



Eurytoma alhitarsis Ashm., from mines in Solidago. 



Closterocerus tricinctus Ashm., from a mine in Sericocarpus asteroldes. 



Tetrastichus microrhopalx Ashm. — A large series was raised from 

 the dried larval skins, July 7-14. 



Mesocrina microrliopalse Ashm. — A single example reared July 6 

 from a white cocoon in a mine of this beetle. 



A single example of the beautiful little Hijypocephalus muUicinctm 

 also issued from mined leaves, but may possibly have bred from some 

 species of Tineidas as this Chalcidid is known to live parasitically on 

 this order of insects and has not been observed to attack Coleoptera. 



MiCRORHOPALA MELSHEIMERI Cr. 



Mr. Henry Ulke found a specimen of this beetle in an ant's nest at 

 Pen Mar, Pa., but it is probable that this was an accidental capture. 

 (Proc. Ent. Soc. Wash., Vol. I, 1890, p. 248.) 



MiCRORHOPALA FLORIDANA Schwarz. 



This species was reared by Messrs. Hu1)])ard and Schwarz at Crescent 

 City and Bartow Junction, Fla., from larvte found mining in the 

 terminal portion of the leaves of grass-leaved golden aster ( Chrysopsis 

 gram ini folia) . 



OCTOTOMA PLICATULA Fah. 



The Virginia creeper, Tecoma radicans, has been known as the -food 

 plant of this species (fig. 5) since about 1879, but was not placed on 

 record until 1890, when a short note was published in the Proceedings 

 of the Entomological Society of Washington (Vol. I, p. 232). The larva 

 makes a tentiform mine in the leaves of this plant, and the imago eats 



