.T. R. MALLOCH 108 



Xenocoenosia major sp. n. 



Male. — Similar in color to caloiii/gn Loew, differing in having the second 

 antennal joint almost entirely dark brown and the apex of third joint slightly 

 browned, the palpi brownish basally, the abdomen without distinct paired 

 dorsal spots, and lacking the large glossy areas on each side of the third and 

 fourth tergites. 



Structurally closely resembles culopi/ya, but the armature of the femora 

 is different. The fore pair and mid pair have rather long bristly hairs on 

 basal two-thirds of antero-ventral surface, the mid femur has a strong bristle 

 at middle on anterior surface, and a series of long slender bristles from base 

 to beyond middle on postero-ventral surface; the hintl femur has two long, 

 strong bristles on antero-ventral surface, one before and one beyond middle, 

 basad of and between which there are numerous setulose hairs, the postero- 

 ventral surface has a few long irregular bristles from base to beyond middle; 

 hind tibia with the median antero-dorsal bristle long. 



Fvmale. — Similar in color to the male, the antennae darker. The two 

 basal abdominal tergites conspicuously j^ellowish testaceous. 



Armature of the femora as in male, the apical antero-ventral bristle absent 

 in both se.xes. 



Length, 4.5 to 5.5 mm. 



Type and allotype. — cT and 9 ; Daytona, Florida, April 7, 

 1919, [B. S. X. H.]. T^vo females, paratypes, St. Ausu^tine. 

 I'lorida, April 12 and 18, 1919. Collected by Mr. C. W. Johnson. 



Paratypes in collection of The American Entomological Society 

 and Illinois State Natm-al History Survey. 



Xenocoenosia floridensis sp. n. 



This species very closely resembles calupyga, differing in color and chae- 

 totaxy. 



The legs have the femora with longer and denser soft hairs on the ventral 

 surfaces. The mid tibia in the male type has the antero-dorsal median bristle 

 nuich stronger than the postero-dorsal one, which is not the case in any speci- 

 men of calopyga which I have seen, but, as the females of both species have 

 the bristles the same, this character may be variable. Length, 3.5 to 4 mm. 



Type.— d"; St. Augustine, Florida, April 19, 1919, (C. W. John- 

 son). Paratypes and allotype. — One male and t\vo females, topo- 

 typical. 



Type in the collection of the Boston Society of Natural His- 

 tory, paratypes in collections of The American Entomological 

 Society and Illinois State Natural Histoiy Survej^ 



Coenosia dichaeta sp. n. 



Male. — Black, slightly shining, densely gray pruinescent. Head with 

 face, cheeks, and orbits white pruinescent; interfrontalia opaque black when 



TRANS. AM. ENT. SOC, XLVI. 



