PLATYPALPUS. 133 



Black y smooth, shining. Palpi yellow. Antennae long; second 

 joint a little longer than the first ; third linear, about twice the length 

 of the first and the second ; fourth much shorter than the third. 

 Wings colourless ; veins black, tawny at the base ; third and fourth 

 longitudinal veins almost parallel. Halteres pale yellow, black towards 

 the base. Legs tawny ; femora compressed; tips of the posterior femora 

 and of the hind tibia black ; middle femora very broad ; middle tibiae 

 curved ; fore tibiae black ; tarsi black, tawny towards the base. Male, 

 Antennae longer than those of the female. 



Generally distributed. (E. S. I.) 



39. nigritarsis, Fin. d. s. emp. 34. 1, 2 (1815); Mg.; Ztt. Niger, 

 alis subcinereis, pedibus fulvis, femoribus posticis apice tibiis anticis tar- 

 sisque nigris. Long. | J; alar. 1| 2 lin. 



Black, shining. Palpi yellow. Antennae slender; fourth joint 

 rather short. Wings very slightly tinged with grey ; veins black ; third 

 and fourth longitudinal veins almost parallel. Halteres yellow. Legs 

 tawny ; tarsi, fore tibiae, and tips of the hind femora black ; posterior 

 tarsi tawny at the base ; middle femora thick ; middle tibiae curved. 



Not rare. (E. I.) 



40. dissimilis, Mn. d. s. emp. 9. 9 (1815) ; Mg. ; Ztt. Cinereus, 

 capite cano antice albo, antennis fuscis, alis limpidis, abdomine nigro 

 basi et subtus fulvo, pedibus flavis, tarsorum articulis apice nigris. 

 Long. H ; alar. 3 lin. 



Cinereous. Head hoary, shining white in front. Proboscis black. 

 Palpi yellow. Antennae brown. Wings colourless ; veins and halteres 

 yellow ; third and fourth longitudinal veins nearly parallel. Abdomen 

 black, shining, tawny beneath and towards the base. Legs yellow ; tips 

 of the joints of the tarsi black ; middle femora a little thicker than the 

 fore pair ; middle tibiae slightly curved ; fore femora rather thick. 



Rare. In the collection of the Ent. Club. (E.) 



41. longicomis, Mg. zw. iii. 73. 12. pi. 23. f. 17 (1822). Cams, 

 antennis nigris, alis limpidis, halteribus flavo-albis, abdomine nigro, 

 pedibu* fulvis, tarsorum articulis apice fuscis. Long, li; alar. 2^-3 lin. 



Hoary, clothed with pale yellow hairs. Proboscis black. Palpi 

 yellow. Antennae black ; third joint pubescent, linear, conical at the 

 tip, longer than the first and the second ; fourth half the length of the 

 third. Wings colourless ; veins brown, yellow at the base ; third and 

 fourth longitudinal veins almost parallel. Halteres yellowish-white. 

 Abdomen black, shining. Legs pale tawny, pubescent ; tips of the 

 joints of the tarsi pale brown ; middle femora very slightly thickened ; 

 middle tibiae very slightly curved. 



Generally distributed. (E. I.) 



