APPENDIX. 375 



dark reddish-brown ; feet with black hair ; a few pale hairs 

 on the basal half of the thighs, and many about the origin 

 of the feet ; tergum black, with a slight shade of blue, po- 

 lished, and with black hairs. 



Length more than half an inch. 



This species resembles the thoracica, Fabr., but may be 

 distinguished by the colour of the hair of the head, it is 

 also a smaller insect, with a more slender form, 



ASILUS. 



A. abdominalis. Black ; hypostoma silvery ; tergum ful- 

 vous in the middle. 



Inhabits North-west Territory. 



Head rather small ; antennse elongated, second joint 

 very small ; hypostoma bright silvery ; mystax sparse, 

 rigid, black; thorax with minute black hairs, and a few 

 longer ones on the margin ; wings broad, black ; tergum, 

 segments, excepting the basal one and two terminal ones, 

 reddish fulvous. 



Length more than three-fifths of an inch. 



The styles of the antennse being lost in the specimen, I 

 am not certain that this species is correctly arranged when 

 placed in this genus. It will not agree with Dioctria, as 

 the antennae are perfectly sessile, nor with Dasypogon, as 

 the basal joint of the antennae is nearly four times the 

 length of the second joint. The rectilinear posterior tibiae 

 will not authorize its reference to Laphria. The appear- 

 ance of the pectus and the adaptation of the feet are pre- 

 cisely as in AsiLUs. In the arrangement of the wing nei*- 

 vures it agrees with Wiedemann's first tribe. 



