228 



browned, the last two joints blackened. Wings clear, a large fuscous 

 spot in the middle, extending from the cross vein nearly to the apex 

 of second vein, and another, smaller, subquadrate spot just below the 

 apex of third vein. Halteres yellow. 



Frons very wide, equal to one third the width of the head; 

 second antennal joint very large and globose, third joint very slender, 

 twice as long as second and subequal in length to the next two 

 together ; the entire antenna very slender and long, its length equal to 

 two thirds the entire length of the insect, the hairs long but sparse; 

 proboscis sharp, less than half as high as the head. Mesonotum 

 almost entirely bare, highly glossy. Abdomen narrow at base, 

 slightly swollen from before middle to near apex, giving it a rather 

 club-shaped appearance. Legs slender, their surfaces with very few 

 hairs; basal joint of fore tarsus subequal in length to the remaining 

 four, fourth joint very short, fifth swollen and slightly longer than 

 second, without ventral spines, claws large, subequal ; inner claw on 

 mid tarsus about half as long and strong as the outer, last tarsal 

 joint unthickened, fourth short and bilobed ; hind tarsus with the 

 basal joint slightly longer than the remainder of tarsus, fourth joint 

 as in mid tarsus, fifth joint not swollen, unspined below, the inner 

 tarsal claw indistinguishable, the outer one long and strong. Third 

 vein almost five sixths of the wing-length; fourth vein forking well 

 in front of the cross vein. 



Length, 3.5-4 mm. 



Originally described from the District of Columbia by Loew. 

 Represented in collection here by three females from Algonquin, 

 July- August (Nason), and by one female from a cypress swamp 

 at Pulaski, June 28, 1909 (C. A. Hart). 



JOHANNSENIi;i,I,A ALBARIA Coquillett 



Ceratopogon alharius Coquillett, Proc. Aead. Nat. Sci. Phil., 1895, p. 308. 



Female. — Black. Head black, frons and occiput with thick, pale 

 gray poUinosity, face brownish yellow; antennae yellow, brownish 

 from near base of flagellum ; palpi and proboscis yellow. Mesonotum 

 and scutellum wholly and densely gray pollinose; pleurae brown- 

 black, shining, slightly grayish pollinose, postnotum concolorus with 

 pleurae. Abdomen black, sub-shining, with two creamy white opaque 

 bands, one before and one beyond the middle, the width of each 

 equal to the greater part of two of the abdominal segments, the 

 appearance being much the same as if the insect had been attacked 

 by a fungus. Legs yellow; coxae brownish; fore femora narrowly 

 and mid and hind femora broadly blackened at apices ; fore tibia very 



