ENIGMAS STILL UNANSWERED. 149 



central track of excrement is broader, not so mathematically 

 linear." 



27. " A Gelechia ? larva, feeding in the heads of yarrow 

 {Achillea millefolium)." 



33. " A brown Gelechia-Wke larva, found amongst moss 

 by Mr. Douglas, in March, 1857." 



37. " A Coleophora larva, found on birch at West Wick- 

 ham, October 31st, 1857, in a case which had much the ap- 

 pearance of a birch bud." 



38. " A Lithocolletis, mining the upperside of beech 

 leaves." 



46. " A pretty red-spotted yellow larva, mining a leaf of 

 Carex riparia, found at Hackney, March 29th." 



47. " A Gelechia ? larva, mining down the stems (near 

 the root) of Carex paludosa, Collected at Wicken Fen, near 

 Cambridge, April 30th." 



48. " A larva mining in the stems of the shoots of ffliam- 

 nus frangula, near Guildford, causing the leaves to droop j 

 collected May 21st, 1858." 



49. " A grotesquely minute, pistol-form Coleophora case, 

 collected by Mr. Gregson, on Salix fusca, at the end of 

 May." 



50. " A Tortrix ? larva, mining down the stems of Cen- 

 taurea ?iigra, and ejecting its ' frass' from a hole in the 

 side of the stem ; collected by Mr. -Boyd, at Probus in 

 Cornwall, June 19th, 1858" (see Int. iv. p. 151). 



57. u A Gelechia ? larva, feeding inside the flowers of 

 Campanula persicifolia, collected at Erlangen, at the end of 

 June." 



65. u A Nepticula larva, mining the leaves of Helian- 

 themum vulgare, collected by Herr F. Hofmann, early in 

 October." 



