LIFE-HISTORY OF HESPERIA LINEA (= THAUMAS). 263 



Lampronota fracticornis. — Doubtless = L. melancholica, 

 though a type cannot be fixed among the nine examples in the 

 collection. 



L. crenicornis = L. caligata. — Type (a dissected male) selected 

 by me from twelve English and Irish males and females. 



L. denticornis = L. accusator, Fab., as I anticipated in 1908; 

 female type selected by me from a single pair. 



Unfortunately I had no time to examine the remainder of 

 the Parasitic Hymenoptera with any care ; there are far more 

 Braconidae than Ichneumonidae, with no types yet excavated 

 from the general chaos. Among the Chalcididae I discovered a 

 little group of specimens, named in Walker's caligraphy, which 

 I believe to be part of the types of his Mon. Chalcid. ; and 

 further investigation should yield much of interest in both these 

 families and the Proctotrypidae, of which Haliday also wrote 

 between 1833 and 1839. 



LIFE-HISTORY OF HESPERIA LINEA (= THAUMAS). 

 By F. W. Frohawk, M.B.O.U., F.E.S. 



(Continued from vol. xlv. p. 256.) 



The young larvae which hatched from the eggs and spun 

 themselves up for hibernation during the first week of August, 



1912, commenced emerging from their hibernacula on April 16th, 



1913, by eating their way out of the cocoons, and shortly after 

 fed on the tender blades of grass. One was separated from the 

 rest and kept isolated for the purpose of observation, to which 

 the following descriptions refer. 



After each meal it rested lying along the centre of the blade ; 

 after feeding two or three times it spun two cords of silk from 

 edge to edge of the blade, drawing them partly together, in 

 which it lived. On the seventh day six cords were spun across 

 the blade. 



The first moult took place on May 6th, twenty days after 

 hibernation. 



After first moult, the ground colour is very pale greenish- 

 ochreous, greenest over the middle segments. Head ochreous, 

 clypeus darker, eye- spots dark ; surface granular, sparsely 

 sprinkled with little black knobbed processes ; the body has a 

 granulated surface resembling lizard skin, and is beset with tiny 

 black stud-like knobs. A medio-dorsal green line extends from 

 the head to the eleventh segment, which is uniformly pale 

 ochreous without any markings, and beset laterally with sharply- 

 pointed simple white hairs ; the medio-dorsal line is edged with 

 light ochreous ; a fine subdorsal whitish line edged with green ; 



