310 



ADDENDA. 



Page 36. 



Stratiomys Meigenii. 



Male. P Black. Abdomen with a rather large nearly trian- 

 gular testaceous spot on each side of the second segment; third and 

 iourth segments with a smaller and paler spot on each side ; third 

 with a whitish transverse spot on each side; fourth with a short 

 whitish streak on each side of the hind border ; fifth with a whitish 

 dorsal stripe, which does not extend to the fore border; second and 

 third and hind borders of the following ventral segments whitish. 

 Wings brown. Halteres green beneath at the tips. 



This may be the male of S. Meigenii, or of S. nigrifrons, 

 or these two may be varieties of one species. 

 a. La Chine, near Montreal, Canada. Presented by Dr. Barnston. 



Page 40. 



Stratiomys Canadensis. 



Nigra ; abdomen viride, vitta dorsali nigra, basi dilatata, lateribus 

 angulatis, postice rotundata, apicem fere attingente ; pedes 

 testacei ; alee limpidce, ad costam subtestacece, venis pallidis ; 

 halteres testacei, apice pomacei. 



Nearly allied to S. Pawn. Male. — Black. Proboscis and 

 antennas black. Thorax clothed with pale hairs ; scutellum black, 

 armed with two black spines. Abdomen green, with a black dorsal 

 stripe which extends nearly to the hind border ; this stripe occupies 

 nearly the whole breadth of the first segment ; on the second it de- 

 creases in breadth from the fore to the hind border, on the third and 

 on the fourth it has nearly parallel sides, but is broader on the 

 fourth than on the third ; on the fifth it is nearly semicircular. 

 Legs testaceous. Wings limpid, with a testaceous tinge along the 

 costa ; veins white, testaceous towards the costa. Halteres testa- 

 ceous, with apple-green knobs. Length of the body 3i lines ; of 

 the wings 7 Hues. 



a. La Chine, near Montreal, Canada. Presented by Dr. Barnston. 



