COLEOPIIORA. 223 



nincli larger tlian it a})])cnrs to have any occasion for, which is to 

 allow for the growth of the larva; a new-made case is extremely 

 transparent, but tlie larva soon sets to work to line it with silk, 

 being aware that it would stand small chance of escaping the 

 numerous and ubiquitous Ichneumons if it lived in a glass 

 house. 



37. viminetella (v. TIeydcn), ZcU. L. E. iv. 393. Anm. i. (lSt9) ; 

 Sta. — lit-'n-inia'j)e>nu'll(i,'Yxc\i.'^ Dup. ? Alls anticis aiigmtuUs ochrco- 

 griseis, apiceiu versus pauUulum saturation bus ; anteiuiis albis, i'usco- 

 anuulatis, avticulo basali grisco-oclivco, non penioillato. Exp. al. G lin. 



Head, face, and palpi greyish-ochreous. Antennaj white, annnlatcd 

 with fuscous ; the basal joint greyish-ochreous, not tufted. Anterior 

 wings rathe)- narrow (very variable in colonr), generally greyish-ochre- 

 ous, slightly darker towards the apex. Posterior wings grey, with 

 paler cilia. 



jN'ot uncommon among sallows and osiers in Jime and July. 

 The larva feeds in autumn and spring on the leaves of those 

 plants; its case is very peculiar, being nunlc of pieces of leaf 

 added at different times; it is not uniform in colour or size, 

 being generally darkest towards the top, and of course broadest 

 towards the bottom. The perfect insect can sometimes hardly be 

 distinguished from the allied species ; a fact which ought to make 

 us extremely cautious in concluding that because we can see no 

 distinction between species, they are therefore identical ; not till 

 the entire habits and history of the different specimens are known 

 can we pronounce decidedly that they are not distinct. 



38. olivaceella, u. sp. Alis anticis o/iw/ceo-griscis, dorsum ver- 

 sus satnratioribus ; antennis albis fusco-anuulatis, articulo basali gra- 

 ciliore olivacco-grisco, non penicillato. Exp. al. G lin. 



Head, face, and palpi olive-grey. Antenna) white, aunulated with 

 fuscous ; the annulations hardly perceptible before the apex ; the basal 

 joint ratlicr slciuler, olive-grey, not tufted. Anterior wings oZ/rogrey, 

 inclining to dark grey along the inner margin; cilia pule olive-grey. 

 Posterior wings dark grey, with paler cilia. 



Two specimens taken by IMr. AUis, of which one is in my own 

 collection. 



39. solitariella, Zell. L. E. iv. 397 (1S49) ; Sta.; Dougl. Ent. 

 Trans, ii. n. s. 81. pi. xi. f. 3. Alis m\\\c\?,a)igmtnlh, ochreo-Jlavis, ni- 

 tidis ; ciiiis apicis ochrco-flavis, mif/uU analis saturate griscis ; antennis 

 niveis, uigro-annulatis, articulo basali ochreo-llavo non penicillato. 

 Exp. al. 5.1 lin. 



Head, face, and palpi ochreous-yellow. Antenna? snowy-white, 

 aunulated whh black ; the basal joint oehrcous-yellow, not tufted. 

 Anterior wings rather narrow, shinint/, ochreous-yeltow ; the cilia at the 



