132 PROCEEDINGS OF THE NATIONAL MUSEUM. 



MILICHIELLA ARCUATA Loew. 



Lobioptera arcuata Loew, Zeit. Ges. Naturw., 1876, p. 339. 

 Milichia arcuata (Loew), Aldrich, Cat. N. A. Dipt., 1905, p. 651. 



Represented in U. S. National Museum collection by one male 

 specimen from each of the following localities: District of Columbia 

 (collection Coquillett) ; Bladensburg, Maryland (H. S. Barber) ; and 

 Toronto, Canada (Brodie collection). I have also seen four speci- 

 mens, two males and two females, from Natchez, Mississippi, May 20, 

 1909 (E. S. Tucker). The female has not been previously recorded, 

 and should be readily distinguished by the characters given in the 

 above table, as also its smaller size (1.5 mm.). 



MaiCHIELLA CINEREA Coquillett. 



Opiithabnomyia dnerea Coquillett, Proc. U. S. Nat. Mus., vol. 22, 1899, p. 268. 



This species was described from a single female. The two males 

 in collection U. S. National Museum differ in having the abdomen 

 sUvery white, except the hypopygium, which is black. The second 

 abdominal segment in the male is about twice as long as the third, 

 which is subequal in length with the fourth and fifth. In other 

 respects the male is similar to the female. 



This species must be very close to M. parva Macquart from the 

 Isle de Bourbon, but the third and fourth veins are parallel in parva, 

 whereas in dnerea they are sUghtly, but appreciably, convergent at 

 their apices, and parva is described as black and not gray. 



Localities. — Type, Bayamon, Porto Rico, January, 1899 (A. Busck) ; 

 males, Santo Domingo, West Indies, June 8, 1905 (A. Busck) ; Phila- 

 delphia, Pennsylvania (C. W. Johnson). 



MILICHIELLA LUCIDULA Becker. 

 Milichiella lucidula Becker, Ann. Mus. Nat. Hung., vol. 5, 1907, p. 537. 



I find two males of this species in U. S. National Museum collec- 

 tion that agree with Becker's description. The type came from 

 Peru; but in spite of the fact that the museum specimens came from 

 Carlinville, Illinois (Robertson), I am convinced they are the same 

 as Becker's species. In the male this species may be distinguished 

 from lacteipennis by the presence of a silvery white spot on each side 

 of the second segment of the abdomen. In other respects it agrees 

 closely with that species. The female is undescribed, and will be 

 very difficult to separate from the female of lacteipennis, as the 

 silvery abdominal spots will presumably be absent. I took one male 

 of this species in Virginia close to the Highway Bridge over the Poto- 

 mac May 25, 1913. 



The species recorded as M. bisignata Coquillett in Smith's list of 

 New Jersey Diptera is, I have found upon examination, identical with 

 the Carlinville specimens. I can find neither the type of bisignata in 

 the collection here, nor any published description, and conclude that 



