50 Bulletin of the Brooklyn Entomological Society Vol. XII 



Larger insects, 3.5 mm. long; costal area uniseriate, but the areolae very 



much larger M. coloradensis n. sp. 



4. Lateral margins of the pronotum rather broad, occupying about two 

 fifths of the entire width ; elytra with the posterior portion of the 

 outer nervure closing discoidal area very strongly curved, forming a 

 c-shaped mark M. c-nigrum Champion. 



Lateral margins of the pronotum very narrow, mostly uniseriate; the 

 posterior portion of the outer nervure closing discoidal area not so 

 strongly curved M. monotropida Stal. 



Monanthia ehrethiae Gibson, sp. nov. — General form of M. c-nigrum 

 Champion, but readily distinguished from it by the much larger lobes of 

 the pronotum and the irregularity of the areolae along the costal margin 

 of the elytra. 



Head broad, armed with five long prominent spines, three frontal and 

 two adpressed spines (the later spines arise near the base of the head and 

 extend forward near the eyes). Antennas with the basal segment slightly 

 longer than the second ; fourth segment swollen and as long as the first 

 and second taken together. Bucculse prominent; rostrum reaching to 

 middle coxae. Pronotum prominently lobate on each side, and coarsely 

 reticulate in comparison to the reticulations of the corium ; the center of 

 each lobe raised, ear-shaped. Median carina extending the entire length 

 of pronotum, on each side of which at the base is a short carina, diverg- 

 ing. Elytra very finely reticulate, with posterior portion of the prominent 

 nervure closing the discoidal area forming a c-shaped mark. Reticula- 

 tions towards the apex of the elytra becoming larger._ Areolae large, one 

 row along costal margin of elytra but which is interrupted occasionally by 

 smaller areolae bordering the costal margin. A single row of large areolae 

 also bordering inner margin of membrane. Size : 2.7-3 m^n. long ; width 

 of pronotum, i mm. 



Color. — Head black, with spines whitish; first two and fourth segments 

 of antennas dark, the third testaceous. Rostrum testaceous, tinged with 

 black at apex. Lobes of pronotum pale brown, darker on raised portions. 

 Elytra ferrugineous, with the c-shaped mark and borders of areolae darker. 

 Beneath piceous, rostral groove testaceous. Tibiae and apex of femora 

 testaceous. 



Described from three females and three males, collected by 

 Mr. H. S. Barber in southern Texas from Ehrethia elliptica D. 

 C. Besides these 25 other specimens have been examined which 

 were collected by Messrs. Barber, C. H. T. Townsend, and E. A. 

 Schwartz, at Brownsville and Victoria, Texas. Ehrethia elliptica 

 is undoubtedly the food plant of this species as Mr. Barber has 

 taken eggs and nymphs 'as well as adults from it and has observed 



