ART. 20 REVISIOISr OF THE GENUS WINTHEMIA REINHARD 53 



2 without any median marginal bristles; third bearing a mar- 

 ginal row of about 10; fourth with a row of smaller bristles near 

 apex and covered in front with erect bristly hairs; venter of third 

 and fourth segments bearing sharply limited patches of dense long 

 black hairs, usually small on the latter; genital segments yellow, 

 small and retracted; inner forceps united and keeled behind, tapering 

 gradually from base to apex, which is slightly bowed forward; 

 outer forceps yellow, hardly two-thirds as long as inner ones, the 

 tips blunt or broadly rounded. 



Legs black; mid tibiae with one stout anterior bristle near middle; 

 hind tibiae ciliate; claws and pulvilli exceeding the length of last 

 tarsal joint. 



Wings grayish liyaline; first posterior cell open well before wing 

 tip ; third vein with one or two hairs at base ; costal spine minute. 



Female. — Front at vertex 0.276 of the head width (average of 

 three : 0.28 ; 0.27 ; 0.28) , not much wider at base of antennae ; the usual 

 two pairs of orbitals present; median stripe uniform in width to 

 triangle and occupying one-third of the frontal width; apical joint 

 of fore tarsi somewhat swollen but not much longer than usual ; hind 

 tibiae subciliate with one longer bristle near middle ; claws and pul- 

 villi short ; abdomen usually showing less red on sides than in male, 

 second segment bearing one pair of median marginals, fourth with 

 a discal and a marginal row. 



Length, 6 to 9 mm. 



ryp^.— Male, U.S.N.M. No. 20054, from Billys Island, Okefenokee 

 Swamp, Ga. 



Kedescribed from 10 males (including type) and 3 females in the 

 United States National Museum as follows: 8 males and 1 female, 

 labeled " E E A Cuba 8129 " ; 1 male and 1 female, Habana, Cuba 

 (Baker), collection of J. M. Aldrich; 1 male. Billys Island, Okefe- 

 nokee Swamp, Ga., June, 1912 (J. Chester Bradley) ; 1 female, 

 Spring Creek, Decatur County, Ga., July 16-29, 1912, without col- 

 lector's label. One female, more robust than the remainder of the 

 series, from Miami, Fla., November 3 (C. H. T. Townsend), is 

 apparently the same. 



UNRECOGNIZED SPECIES OF WINTHEMIA^ 



The types of all the following species, except Walker's and Bigot's, 

 are apparently lost, and the original descriptions are too inadequate 

 to recognize the forms : 



Exorista leucaniae Kibkpatkick, Oliio Agr. Rep. for I860, p. 757, 1801. Ohio ; 

 reared from Lcucania unipuncta. 



Exorista ostemackenli Kibkpatrick, OJiio Agr. Rep. for 1860, p. 757, 1861 

 Oliio; reared from Leitcania xmipuncta. 



" Winthemia obscm-a Coquillett, Revis. Tachln., p. 124, 1897, equals Eupogona 

 (Aldrich. Proc. Ent. Soc. Washington, vol. 30, p. 44, 1928). 



