532 Mr. Edward Saunders on 



intervening forms are discovered. Mr. Eaton has taken 

 seven species and Mr. Morice six. 



Myzine tripunctata, Rossi. 



$ 1. Bone, 10. viii. 97. A. E. E. 



Myzine guerinii, Luc. = latifasciata, Palm. 



$ 2. Medea still north of the railway-station, on 



Eryngium triquetrum, 29. vi. 93. A. E. E. 

 $ 1. Hippone, on Ammi visnaga, 10. viii, 96. 



A. E. E. 

 ? 1. Biskra, 12. v. 97. A. E. E. 

 $ 6. Biskra, v. 98. D. D. M. 

 $ 2. Biskra, 4-30. v. 98. F. D. M. 



Ditto, var. cercerigastra, Grib. (?). 



?1. Biskra, 30. iv. 98. A. E. E. 



Myzine l^eta, n. sp. 



<£ 3. M. Guerinii affinis, abdominis segmento primo minus trans- 

 verso, segmentis (basalibus plus minus rufo pictis) fasciis continuis 

 colore dilutiore vel flavo ornatis. 



5 Albido pilosa, capite et tborace nigris, prothorace rufo vel flavo 

 picto, abdomine pedibusque testaceis, pilis horum albidis. 



<$ in size and general contour like Guerinii, Luc, but with the 

 antennae rather shorter and less robust, the yellow colour of the 

 thorax more extensive, the pronotum often being entirely yellow, 

 head and thorax clothed with bright silvery hairs, clypeus and 

 mandibles yellow, the latter brown at the apex, wings quite clear, 

 nervures brown, costa and stigma testaceous, radial cell elongate and 

 pointed as in Guerinii, abdomen yellow with the bands of the basal 

 segments narrowly ferrugineous, their ground colour also often 

 tending to that coloration. In all the specimens however which I 

 have seen, some of the segments towards the apex have the bands 

 black, as in the majority of other species, and in one specimen all the 

 bands are black. It can only be distinguished from Guerinii by the 

 denser silvery- white hairing of the thorax, the slighter antennas and 

 the different form of the 1st abdominal segment. This last in all the 

 specimens is less transverse and more globose than in Guerinii, the 

 puncturation of the abdomen is finer and more remote, and the 

 stipites of the armature are truncate at the apex, and much less hairy 

 along the inner margin. 



L. 15-16 m.m. 



