46 TROCHILIUM CHRYSIDIFORME. 



pulsating streak, and visible as far down as the begin- 

 ning of the tenth segment. The head was rather 

 reddish-brown, with a narrow plate of the same colour 

 on the second segment ; the anal segment had a yel- 

 lowish plate; above the spiracles were some very 

 minute blackish punctures. (W. B., 7, 66 ; B.M.M. 

 IV, 14.) 



Teochiltum ichneumoniforme. 

 Plate XXVII, fig. 4. 



The larva of this species had till recently baffled the 

 researches of entomologists, both British and foreign, 

 but has eventually been detected by the exertions of 

 Mr. Meek; thus being the second clear-wing larva 

 which he has discovered. 



On the 26th July, 1869, Mr. Meek sent me a larva 

 of T. ichneumoniforme, and subsequently a pupa, with 

 the mines of both in the main roots of Lotus cornicu- 

 latus. 



Its habit seemed to be to scoop out a groove or 

 hollow channel along the side of the root, covering its 

 back evenly with the gna wings or debris of " frass," 

 spun together with silk, not projecting as an excres- 

 cence, but with the outline of the root preserved. 

 When present it may, however, be readily seen when 

 sought for, as the external covering of its mine is of 

 a pale brownish-yellow sawdust tint and texture, 

 forming a strong contrast to the dark grey-brown 

 colour of the rind of the root. 



The larva was about half an inch long, rather 

 thick in proportion to its length, with the head less 

 flattened than usual in this genus, and the body 

 rounded, plump and full. The second segment was 

 the longest, and the third and fourth were rather 

 thicker than the others, with puffed or swollen sub- 

 divisions ; the remaining segments had rather an 



