20 PROCEEDINGS OF THE NATIONAL MUSEUM Vol. 68 



Described from a single specimen collected at Havana. Cuba 

 (Baker). Named after the collector, Dean C. F. Baker, of Los 

 Banos, Philippine Islands, as a slight recognition of his life-long 

 activity in collecting tropical insects, and his generosity in placing 

 his material at the disposal of taxonomists everywhere. 



Type.— Mole, Cat. No. 28281, U.S.N.M. 



CYLINDROMYIA VULGARIS, new species 



(Fig. 28 > 



This is a medium-sized species with brightly m^irked abdomen, 

 very common through the western part of the United States, more 

 rarely occurring in the region of Washington, District of Columbia. 

 The red markings of the abdomen are very distinct, the median black 

 stripe often lacking. The distinctive characters are given in the 

 key and those of the male are most easily made out. The forceps 

 are almost exactly as figured for atra. The posterior forceps are 

 shining brown or black on the sides, widening at the apex. As 

 usual, they are united and deeply grooved behind. In profile they 

 are of about uniform width to the tip, where they end in a si;iall 

 toothlike projection closely applied to the anterior forceps. The 

 latter are shining brown or black, the hind edge broadly curved 

 forward, not grooved at the bend, the width nearly uniform for 

 most of the length, the front edge curving forward beyond the mid- 

 dle to a rather sharp tip. The projecting edge of the last genital 

 segment is not very prominent ; the fifth sternite has a narrow notch 

 in the center with a considerable lobe each side, beyond which 

 there is a deep, rounded excavation, and at the lateral margin three 

 llattened bristles of increasing size. The second principal segment 

 of the abdomen has on the under side at the posterior corners two or 

 three pairs of depressed long bristles. The fourth segment has 

 about eight marginal bristles. In profile the eye is as far from the 

 front edge of the head as from the hind edge. There are three 

 sternopleurals in the female, the abdomen is without any charac- 

 teristic cluster of ventral spines, and the depressed bristles of the 

 hind edge of the second segment below are small and inconspicuous. 

 The hooks of the last genital segment are large and strongly curved, 

 but there is no square shoulder above their origin. 



Length, 7 to 9 mm. 



Described from 143 specimens of both sexes. 



In the National Museum are 47 specimens, of which 15 are from 

 the District of Columbia and the adjacent parts of Maryland and 

 Virginia, collected by Greene, Currie, McAtee, Walton, Townsend, 

 and Rohwer. The remainder are from Chesapeake Beach, Maryland 

 (Shannon) ; Colonial Beach, Virginia (Silver) ; Michigan City, 

 Indiana (Aldrich) ; Cadet, Missoiu'i (Riley coll.) ; East Point, 



