no. 1649. NORTH AMERICAN CRAMBID UOTHS—KEARFOTT. 391 



I have another specimen of repanda from Pima County. Arizona. 

 received from Dr. John B. Smith, which is marked and colored exactly 

 like my type, except that the dark shad- 

 ings are a little more intense. These two 

 are so exactly alike in every detail, ex- 

 cept the form of their antennae, that I 

 am lather inclined to doubt the stability 

 of the latter. Extensive series may show 

 sufficient intermediate variation to sink 

 the new name as a synonym of repanda. 



THAUMATOPSIS PEXELLA Zeller. Fig. 12.— Head and BNLAHGED an 



TKNNA OF THAUMATOPSIS I'KX- 



A drawing of the head structure, with 

 an enlargement of the antenna is given in fig - . 10 for comparison with 

 similar parts of other species in this genus. 



ANALYTICAL KEY TO SPECIES OF 1HATR.KA. 



1. Fore wins; with a silver median stripe paralWa Kearfott. 



Fore wins without silver median stripe 2 



2. Fore wing bluish gray, without marks or dots idalis Fernald. 



Fore wins yellow or brown 3 



3. Fore wins with dorsal white shading alleni Fernald. 



Fore wins without this distinct shade t 



4. Fore w-ins with duplicated subterminal line _..succharalis Fabricius. 



Without those lines, expanse over 40 mm differentialis Fernald. 



DIATRiEA PARALLELA, new species. 



Expanse. 22-30 mm. 



Head white, slightly shaded with cream between antennae; labial 

 palpi white internally, beyond middle dotted with gray, externally 

 heavily dotted with gray and brown; maxillary palpi white, with 

 external patches of gray scales at base of second joint and at outer 

 end of tuft; thorax white, with short indistinct subdorsal ochreous 

 streaks; patagia light fawn, becoming whitish at posterior ends and 

 dorsally edged with white; abdomen and legs cream white, latter 

 slightly shaded with light ochreous. 



Fore wing pale fawn or light ochreous terra-cotta. This ground 

 color is uniform throughout the wing and makes a very effective back- 

 ground for the silver stripes. The median stripe is from base to ter- 

 men, of uniform thickness except on inner fourth, where it gradually 

 diminishes in width to base; above it is a ground color stripe of equal 

 width; above this the costa is narrowly white from base to apex: 

 veins 2, 3, 4. and 7 are overlaid with white at ternien. The dorsal 

 margin is narrowly white and vein 1'' is overlaid with white its 



