GENUS AMASIS. 43 



an almost continuous line scarcely separated between 

 the segments. Below and touching these are eleven 

 orange marks longer than broad, and, like the line 

 above, commencing and ending on the second, and 

 ending on the third last segment. The first two 

 orange marks are traversed by the black ones. Over 

 the claspers is an elongated black mark ; in front of 

 the first leg is a small black mark ; the mark over the 

 second and third somewhat obscure. Spiracles ellip- 

 tical, bordered with brown. Claws brown. There 

 are thus five rows in all of black spots; the space 

 between the line over the orange spots and the third 

 is greater than between the others. 



Mesoleius sepulchralis, Holm., is a parasite on the 

 larva (cf. Bridgman, E. M. M., xx, p. 228). 



The cocoon is spun near the surface, amongst the 

 leaves, &c. According to Dr. Osborne, larvae which 

 feed on snow-berry leaves alone form " dark brown, 

 resinous-looking cocoons," while those which feed on 

 honeysuckle make them much lighter in colour. 



The flies are found chiefly in early summer, also in 

 July ; and in Scotland I have taken a ? late in August. 



Local, but generally distributed in Scotland, Eng- 

 land and Ireland. 



Continental distribution : Sweden, Germany, Swit- 

 zerland, France, Russia. 



Genus AMASIS. 



Amasis, Leach, Z. M., iii, 114 (1817). 



Antennae 5-jointed, the third joint double the length of fourth, which 

 is thicker than it ; the single-jointed club is longer than the third and 

 fourth together. Wings with two radial and three cubital cellules; the 

 the first cubital cellule is a little longer than second, and the third is 

 the longest and widest; the first and second receive each a recurrent 

 nervure. Lanceolate cellule largely contracted. Transverse median 

 nervure interstitial. Posterior wings with two median cellules. Eyes 

 situated below the ocelli, large, reaching near to the base of mandibles, 

 converging on inner side. Calcaria acute, not membranous at apex 

 Patellae small. Claws bifid. 



