DIPTERA-TIPULIDAE FROM JUAN FERNANDEZ 2J 



the subcostal cell a little more infumed; stigma dark brown; obliterative areas 

 before the stigma in cell is^ R^ and as a narrow hyaline line on either side of 

 the basal deflection of Mj^2f occupying the extreme end of cell R and the 

 middle of cell ist M2. Venation: R2 persistent for its entire length; basal de- 

 flection of ^4+5 short or punctiform; petiole of cell M^ about as long as cell 

 \st M2\ ni-cu punctiform. 



First abdominal tergite dull yellow, the remaining tergites with a broad 

 dark brown sublateral stripe that broadens behind to cover almost all of the 

 segments; bases of the tergites yellowish; lateral margins broadly brownish 

 yellow; caudal margins, especially of the subterminal segments, broadly yellow; 

 sternites dull yellow. Basal shield of the" ovipositor dark chestnut brown; valves 

 of the ovipositor straight, the tergal valves considerably longer than the much 

 deeper sternal valves. 



Habitat. — Endemic in Masatierra. 



Holotype, ?, March. 



Type in the Riksmuseum in Stockholm. 



This interesting species of Tipula agrees most nearly with T. flavipennis 

 PhiHppi (Chile) but is quite a different species. It is with great pleasure that 

 this fly is dedicated to its discoverer. 



