42 CECESUS VARUS. 



know of it from Clober Wood, near Glasgow, Hanley, 

 and Worcester (J. E. Fletcher). 



On the Continent it is found in Prussia, Holland, 

 France, and at Riga. Possibly it is this species which 

 Eversmann (Bull. Mosc., xx, 14) describes from Oren- 

 burg as N. laticrux. 



3. CROESUS VAEUS. 

 Vol. I, PI. IV, fig. 4, Larva. 



Tenthredo septentrionalis, Fallen, Acta, 1808, 60, 21, var. a; 



Zetterstedt I. L., 349, 41. 



Nematus varus, Yillaret, Ann. Soc. Ent. Fr., i, 306, pi. xi, f . 8 ; 



Stephens, 111., vii, 39; Hartig, 

 Blattw., 186, 4 ; Thomson, Opus., 

 615, 2; Hymen. Sc., i, 86, 6; 

 Andre, Species, i, 100, pi. xiii, f. 2 

 (lar.) ; Cat., 12,* 2 ; Vollenhoven, 

 Tijd. Ent., vi, 7680, pi. 6 (lar. 

 imago, and coc.) ; Br. and Zad. } 

 Schr. Ges. Konig., xvi, 58, pi. 4 

 f. 4 (lar); Kaltenbach, Pfl., 619'. 

 Cameron, Proc. Nat. Hist. Soc. 

 Glas., ii, 301. The larva was also 

 described by De Geer, Mem., ii, 

 264. 



Black, shining, covered with fuscous pubescence; mesonotum 

 slightly punctured, pleurae opaque, faintly pubescent ; the clypeus in 

 part, labrum and palpi white ; the pronotum at the base is testaceous, 

 and the four or five middle abdominal segments are reddish. Legs : 

 femora red, the posterior black at the apex; the four anterior tibise 

 white, the posterior with the basal half of the same colour, the apical 

 half being black ; the spurs pale reddish ; four anterior tarsi white, the 

 posterior black ; trochanters white. The wings are hyaline, the tegulse 

 testaceous. 



Length 3^ lines. 



Readily distinguished by the hyaline, unclouded 

 wings, white mouth, and reddish femora. 



With the exception of Villaret, no one seems to have 

 found the $ , which is undoubtedly very rare. Villaret 

 describes it as not differing from the other sex. 



The larva has the head rather small, and covered 

 with microscopic hairs ; the colour is pale greyish 

 green. On the face is a brownish spot, and above 



