many of the following localities, as well as for several of the 

 species. 



1. D. cinctus Curt. Guide, No. 1. 



Cinereous black, margin of the thorax ochreous, two 

 stripes down the middle, scutellum and base of the 

 halteres pale dirty yellow : wings immaculate : legs 

 rather stouter than in the other species, and dull 

 ochreous, tips of the tibiae and tarsi blackish. 

 Taken at Southgate by Mr. F. Walker. 

 1». D. fuliginosa Walk. MSS. 



Cinereous black, posterior portion of thorax lurid; 

 wings pale yellowish fuscous: legs dull ochre, tips 

 of thighs and tibiae and the tarsi blackish. 

 Taken at Southgate by Mr. F. Walker. 



2. D. aestivalis Meig. 1. 218. 2. 



July on aquatic plants, Southgate, Mr. F. Walker. 

 2*. D. serotina Hgg.—Meig. 1. 217. 1. 



Inhabits the verge of the sea, Ireland, Mr. Haliday. 



3. D. aprilina Meig. 1. 218. 3. tab. I.f. 12. c?- 



In the spring at Southgate, Mr. F. Walker. 

 3*. D. moesta Hal. MSS. 



Very similar to D. macidata, but it is smaller, of a 



duller colour, the wings are darker, and the tarsi are 



blackish. 



Taken in Ireland by Mr. Haliday, who thinks it 



may be a variety of D. maculata. 



4. D. maculata Meig. 1. 219. 4. 



Mr. Walker says " it is common at Southgate in April and 

 October, flying in company in the evening like Trichocera. 

 In April on aquatic plants, where it had recently assumed its 

 perfect state." 



5. D. nubilipennis Curt. Guide, No. 5. 



Smaller than the insect figured ; and as all the spe- 

 cimens I have seen were alike, I think it is distinct 

 from D. nehdosa : the 2 central black lines on the 

 thorax are much longer, and the clouds on the wings 

 much less distinct than in that species. 

 I have taken this insect the middle of November, in the 

 flowers of the Ivy at Arno's Grove, where Mr. Walker also 

 finds it, as well as in the Isle of Wight, the middle of October. 



6. D. nebulosa Meig. — Curt. Brit. Ent. pi. 409. ? . 



The only specimen I have seen was taken by Mr. 

 Haliday in Ireland. 



The Plant is Ligustrum vulgare (The Privet). 



