64 Prof. Charles P. Alexander on Exotic Tijpulidae. 



Size larger. Basal segments of the flagellum light brown, the 

 pectinations dark brownish black. Mesonotal praescutum golden 

 yellowish with four greyish brown stripes, the intermediate pair 

 confluent in front, behind separated by a narrow brownish yellow 

 line. Femora reddish brown, the tips scarcely, if at all darker; 

 remainder of the legs reddish broMTi. Wings strongly yellowish 

 grey, the base a^nd the costal and subcostal cells more saturated; 

 stigma 3'^ellowish brown; a scarcely apjjarent darker cloud at 

 r — m; veins yellowish brown. Abdomen bright brownish yellow, 

 only the apical segments passing into reddish brown, segments 

 eight and nine bemg of this latter colour; a broad brown lateral 

 line on the tergites, beginning narrowly at the base of segment two, 

 scarcely interrupted at the incisures ; the smooth basal rings of the 

 tergites slightly brighter in colour. Male hjq^jopygium with the 

 ninth tergite having a deep and narrow U-shaped median notch, 

 the sublateral lobes thus formed being slender and with the apices 

 subacute. Ninth sterno-pleurite produced caudad into a con- 

 spicuous flattened blade that is almost as wide as long, the caudal 

 ventral angle running out into a small tooth. Outer ])leural appen- 

 dage appearing as flattened j^ellowish lobes, the tips of which are 

 truncated. Inner pleural appendage heavily chitinised, the caudal 

 margin with two conspicuous chitinised thorns. 



Hah. Panama. 



Holotype, ^, Rio Chico, near the mouth of the Rio 

 Porcona, Dept. of Panama, August 4, 1918 {Axel Olsson). 



Type in the collection of the vmter. 



This is the first record of the genus Ozodiccra in North 

 America. 



