262 f-^i'"i. 



the <J ), it is also usually smaller, and more slender in shape, has the first anul segment of 

 the i retracted and gre^' in colour, and the posterior tibite of the <J less thickly bearded. 

 The buccal setae in S. Agricola are usually considerably larger than in S. carnaria and all 

 the preceding species. There is a great likeness between this species and S. Atropos, but it 

 may at once be distinguished from the latter b}' the absoice of the two central spines upon 

 the edge of the second abdominal segment. 



Not uncommon. 



7. Laticornis, Meig., Eond. 



Bluisli-grey, marked with black stripes and spots. Third joint of 

 antennae rather broad. Arista bare. Vibrissse numerous and large. 

 Two central spines on the second abdominal segment. 



Length, 4 lines. 



Head : forehead prominent. Face white, wi+li blue reflections. Frontal space occupying 

 about one-fourth of the width of the head in the c? . Edges of the facial groove setigerous. 

 Third joint of antennae wide. Arista thickened at the base, and almost bare. Peristome 

 with numerous and large vibrissas. 



Thorax rather indistinctly striped. Dorsal bristles large, three placed behind the suture. 



Abdomen with two strong central spines upon the edge of the second segment, and with 

 the third as well as the fourth segment fringed with numerous strong spines. The dorsum 

 is marked by an interrupted black stripe down the centre, and the posterior margin of each 

 segment is marked upon each side by a semi-circular black spot. The ordinarj' tesellations 

 or reflections are less distinct than in most of the preceding species. Wings tinged with 

 brown. Legs furnished with strong spines, but with no beard upon the tibias of the <J . 



? very similar to the $ , but with a wider frontal space. 



This is a well-marked but aberrant species, bearing a strong re- 

 semblance to some of the Tacliinidcd, the arista being thickened and 

 without hairs, and the facial groove setigerous. Not rare. 



8. NiGEiYENTRis, Meig., Eond. 



Grey, striped and tessellated in the ordinary manner. Frontal 

 space wide. Buccal setae large, style thickened, and with short hairs. 

 Ventral surface of abdomen mostly black. Length, 2 — 3 lines. 



Head: frontal space occupying about one-third of the width of the head in i . Buccal 

 setaj large. Third joint of antennae ratlier large, but of the ordinary form. Arista thickened 

 at the base, and furnished with short hairs. 



Thorax with three posterior dorsal bristles. 



Abdomen with two central spines upon the edge of the second segment. Ventral surface 

 sometimes black, but often grey. Wings with a distinct costal spine, Legs without beard 

 upon the posterior tibiae of the <J . 



? similar to the <5 , but usually larger in size. Frontal space wider. 



This species resembles 8. agricola in having the bristles upon the 

 cheeks enlarged ; but it differs in being smaller, and in having the 

 posterior tibia? of the $ bare. Not common. 



