TENTHREDOrSIS DORSIVITTATA. 115 



ceons splash on sternum), COXSB, trochanters, base of hinder femora, 

 middle suture of mesonotum, metanotum, base and apex of abdomen, 

 and a triangular mark in centre of intermediate segments, black ; hinder 

 tibiae almost piceous, apex of tibia), and base and apex of tarsi blackish ; 

 second, third, and fourth joints white. AntennaD fuscous. Clypeus 

 slightly incised; lateral sutures on vertex very deep, central one 

 scarcely, if at all, indicated behind the ocelli, but it is very distinct, 

 broad, and deep between the two outer ocelli, and has a transverse 

 groove behind; the frontal space is not indicated, but the antennal 

 fovea is very deep and wide. Wings hyaline, costa testaceous. Calcaria 

 short, not reaching to middle of metatarsus. 

 Length 4 lines. 



Similar to nicjriceps, but differing in being smaller 

 and narrower, in having the lower portion of the head 

 the same colour as the upper, clypeus slightly incised 

 at the apex, mesopleura3 and sternum black, spurs 

 shorter, and the tarsi paler. 



A single specimen in Shuckard's collection. 



18. TENTHREDOPSIS DOBSIVITTATA. 

 PI. XVIII, fig. 3, Saw. 



Tenthredopsis dorsivittatus, Cam., Tr. Ent. Soc., 1881, 570. 



Luteous ; labrum, clypeus, orbits of the eyes, a spot behind them, a 

 line on pronotum, scutellar spots, and a line on basal segment of abdo- 

 men, bright yellow; sutures on pleura), metapleuraB, the greater part of 

 metanotum and base of first abdominal segment, and a broad, usually 

 more or less narrowed and interrupted on middle segments, band on the 

 back of abdomen, with the sheath deep black ; four front coxa3 dark 

 luteous, more or less black and white ; hinder coxa3 black, spotted with 

 brown and white ; trochanters pale, a black spot beneath, hinder tarsi 

 with joints more or less fuscous. Wings hyaline. 



Length 3f 4A lines. 



A Scotch specimen has the antennse entirely luteous^ 

 the black band on abdomen very faintly indicated, the 

 tarsi scarcely fuscous, the space enclosing the ocelli 

 and the middle suture on mesonotum black. An 

 English specimen is much darker coloured, the black 

 band on abdomen is represented on segments three 

 to five by a triangular black mark on each, but 

 the black extends all over the upper surface of basal 



