228 THE CANADIAN ENTOMOLOGIST 



densely covered with whitish gray pruinescence. The abdominal 

 markings are distinct though not so well defined as in the other 

 example, from Padre Island, Texas, which is considerably darker 

 and has the markings very conspicuous. The Florida specimen 

 is not in very good condition, but the Texas one has the lateral 

 plates of the apical, furcate ventral segment armed with numerous 

 hairs amongst which there are several long bristles. The arista 

 in both specimens is subequal in length to the third antennal joint. 

 Length 3-4 mm. 



Phyllogaster littoralis, sp. nov. 



Male and female. — Black, densely covered with whitish-gray 

 pruinescence, which is slightly yellowish on dorsum of head and 

 thorax. Antennae and palpi black. Abdomen with very faintly 

 indicated central dark stripe. Legs black, apices of femora and 

 all of tibiee reddish yellow. Wings clear, veins pale. Halteres 

 yellow. 



Orbital bristles moderately strong, 4-7 in number; arista 

 pubescent, basal third much swollen, entire length about iM that 

 of third antennal joint; cheek from one-fourth to one-third the 

 height of eye. Thorax with few setulae; acrostichals irregularly 

 2-rowed. Abdomen with setulose hairs, third and fourth seg- 

 ments with a transverse series of bristles on middle which is stronger 

 than the one at apex. Fore tibise without median bristle; mid tibiae 

 with 2 on posterior surface; hind tibiae with 2-3 antero-dorsal, 2 

 antero-ventral, and 1 pcstero-dorsal. Third vein usually with a 

 few weak, widely-placed bristles on under surface proximad of the 

 inner cross-vein. 



Length 3.5-5 mm. 



Type locality. Grand Tower, III., July 12, 1909, on willow on 

 bank of Mississippi River. Paratypes, Waukegan, 111., August 

 23, 1906, on shore of Lake Michigan; Algonquin, 111., July 10, 

 1895; South Haven, Michigan; July 14, 1914, on shore of 

 Lake Michigan. 



