100 NEMATU3 CAPKE^S. 



Testaceous and yellow, the vertex, some marks on meso- and meta- 

 notum, pleurse, sternum, and dorsum of abdomen black. Legs for the 

 greater part pale testaceous. Wings hyaline, the costa and stigma 

 white. 



Antennae thin, filiform, nearly as long as the thorax and abdomen, 

 black, pilose, the joints well separated from each other, the third curved, 

 shorter than the fourth, the others not much shorter than the third. 

 Head a little narrower than the thorax, dilated considerably behind the 

 eyes, closely covered with short erect hairs ; the vertex thick, with its 

 sutures very distinct, the front thick, projecting between the eyes, its 

 f ovea large and deep ; the clypeus short, narrowed at the apex, where 

 it is narrowly, but not very deeply, notched ; the head is scarcely bent 

 inwardly behind. Thorax smooth, shining, finely punctured ; cenchri 

 large, clear white. Abdomen short, thick, dilated, and semi-cylindrical, 

 a little keeled in the middle above, bluntly rounded at the apex ; the 

 cerci are moderately long, and point downwards ; the sheath projects, its 

 apex black, pilose. Legs pilose, the calcaria short, the posterior tarsi 

 shorter than the tibiae, the second joint shorter than the fifth, the 

 basal joint is thickened at the apex. Wings, with the first cubital 

 cellule, small, the second nearly double the length of the third, dilated 

 considerably where it receives the first recurrent nervure ; the second 

 recurrent nervure is received very near to the second transverse cubital, 

 in most specimens almost joined to it. 



The c? has the antennae longer and more pilose, third joint curved ; 

 the head and thorax black. 



Length 3 4 lines. 



Ab. a. Pale testaceous-yellow, a small spot on the 

 vertex, three marks on the mesonotum, the sternum, a 

 thin line below the wings, and the back of the abdo- 

 men (except at the apex and the junction of the seg- 

 ments) black. The femora at the base and the apical 

 joints of the posterior tarsi black. 



b. As in a, but the mark on the vertex larger, those 

 on the mesonotum almost confluent, only a narrow 

 stripe on the pleuraa yellow, and the back of the abdo- 

 men entirely black. The femora are broadly lined 

 with black, and the apex of the posterior tibiae and the 

 tarsi are of the same colour. The commonest aberra- 

 tion. 



c. As in &, but only a small yellow spot on the meso- 

 notum, and the femora entirely black. 



d. As in c, but with two yellow marks on the meso- 

 notum, one being on the scutellum. 



e. The thorax with only a small yellow spot on the 

 pleuras and a thin black line on the femora. This 

 aberration was bred. 



