30 PROCEEDINGS OF THE NATIONAL, MUSEUM, vol.60. 



yellowish slits. Button small, round. Spiracles located just above 

 the longitudinal axis. Anal opening small, located far below the 

 stigmal plates. 



Length, 8.5 mm. ; diameter, 3 mm. 



82. FRONTINA TENTHREDINmARUM Townsend (Myrsin* tenthredinld«rum Towniend). 



Small; dull, yellowish red. Spiracles shining black, slightly red- 

 dish in the middle, slightly raised above the surface, widely sepa- 

 rated by a space nearly equal to the width of one plate. Each plate 

 has three yellowish slits, each on top of a narrow ridge. Button 

 small, rounded, and not very distinct. Spiracles located very 

 slightly above the longitudinal axis. Anal opening small, far below 

 the spiracles. 



Length, 5 mm. ; diameter, 2 mm. 



83. EXORISTA NIGRIPALPIS Town«end. 



Small ; subshining, yellowish red. Spiracles shining, black around 

 the edge, reddish, in the center, slightly raised above the surface. 

 Each plate has three reddish-yellow slits, each on top of a poorly 

 defined ridge. Button large, round, deep red. Spiracles located 

 slightly above the longitudinal axis. Anal opening fairly large, far 

 below the spiracles. 



Length, 5 mm. ; diameter, 2 mm. 



84. EXORISTA GRISEOMICANS Van der Wulp (Masiceropsii amplcxa Coquillett). 



Medium-sized; subshining, dark red. Spiracles shining black, 

 dark reddish in center, slightly raised above the surface. Each 

 plate has three reddish slits, each on top of a broad, flattened, in- 

 distinct ridge. Button large, round, deep red. Spiracles located 

 'some distance above the longitudinal axis. Anal opening small, far 

 below the spiracles. 



Length, 6 mm. ; diameter, 3 mm. 



85. PHOROCERA FLAVICAUDA Van der Wulp. 



Medium size; subshining, yellowish red; broadly rounded pos- 

 teriorly, faintly depressed on the anterior dorsal portion. Spiracles 

 black, subshining on the sides, deep reddish in the middle, slightly 

 raised above the surface, widely separated, space equal to about one- 

 half the width of one plate. Each plate has three reddish-yellow 

 slits, the two lower slits closer together. Button large, round, red- 

 dish, slightly blackish near the middle. Spiracles located above the 

 longitudinal axis slightly more than the height of one plate. Anal 

 opening very small, far below the spiracles. 



Length, 7.5 mm. ; diameter, 2.75 mm. 



