22 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.60. 



46. PHOBANTHA OCCIDENTIS Walker (Phoranthella morrisoni Townsend). 



Very small ; dull, reddish yellow ; sharply pointed on posterior end. 

 Spiracles protuberant, shining black, faintly reddish along the apical 

 edge and pointing downward. From above the spiracles are solid at 

 the base, and the spiracular plates are well separated by a V-shaped 

 space. Each plate is triangular in shape and has three slits, each on 

 top of a well-defined reddish-yellow ridge ; the upper slit the longest 

 and the middle the shortest. Between the slits the surface is deep 

 reddish. Button large, rounded, and reddish. Spiracles located on 

 the longitudinal axis. Anal opening small, just below the spiracles. 



Length, 2 mm. ; diameter, 1 mm. 



47. FRONTENA ANCILLA Walker (Frontiniella parancilla Townsend). 



Small; subshining, dark red. Spiracles shining black, located on 

 prominent protuberances, which are granular around the basal half, 

 smooth on upper half. They are separated by a space equal to the 

 length of one stigmal plate. Each plate has three small tubercles on 

 the surface. On the top of each is located the slit. Button small, 

 round, and rather weak. Spiracles located on the longitudinal axis. 

 Anal opening small, located below about twice the length of the 

 protuberance. 



Length, 5 mm.; diameter, 1.75 mm. 



48. CLYTIOMYIA FLAVA Townsend. 



Small; dull red. Spiracles protuberant, shining black, roughly 

 granular at the base. From above they are widely separated by a 

 V-shaped space. Spiracles triangular, each having three faintly- 

 yellow slits, each slit on top of a very well-defined ridge. Button 

 round, well defined. Anal opening very small and quite close to 

 spiracles. Spiracles located on the longitudinal axis. 



Length, 5 mm. ; diameter, 2.25 mm. 



49. PLAGIA AMERICANA Van der Wulp. 



Medium size ; dull, dark red ; posterior end of the puparia notice- 

 ably larger than the anterior end. Spiracles are decidedly protuber- 

 ant, shining black, touching at the base and widely divergent at the 

 apex. The bases of these protuberances are covered with small spines. 

 Stigmal plates on top of the protuberances. Each plate has three 

 small slits, each on top of a well-defined ridge. Anterior spiracles 

 well developed, shining black, tuberculate, and widely separated. 

 Button large, located on the inner edge of the plate. Anal opening 

 small, far below the spiracles, and slightly below the longitudinal 

 axis. Spiracles located far above the longitudinal axis. 



Length, 6.25 mm. ; diameter, large, 3 mm. ; small, 2 mm. 



