1887.] PEOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 335 



THE SPECIES OF EUERYTHRA Harv. 

 By JOHIV B. S.^IITII. 



(With one plate.) 



lu Cau. Eut. Vlir, p. 5, Harvey describes '■'- Euerythra pliasma ii. g. 

 et sp." as follows: " $ The insecit is allied to Spilofioma, but the head 

 is more promineut, the wings narrower, and the anteuuce more coutiuu- 

 ously pectinate. The neuration has not been studied of this form, which 

 is so distinctl3^ marked as to be at once recognized, and which I do not 

 find in authors. Wiiite ; fore wings white, crossed by a broad irregular 

 blackish baud from base to extremity of veins 3 and 4, where it retains 

 [stains] the otherwise white fringes. From apices to middle of external 

 margin a second band diagonally crosses the wing. A discal black 

 spot and traces of an extra basal band. Everywhere where the black- 

 ish color obtains the veins are bright yellow, as is the submedian 

 fold. Body above crimson, whitish at base. Thorax and head above 

 white. lS<juamatiou about the eyes crimson. Anterior legs fuscous 

 outwardly ; palpi fuscous. Beneath, the white secondaries show a dot. 

 Expanse 38""" (May 5, Belfrage, Xo. 471)." It will be seen that really 

 no distinctive characters are giveu, although the genus seems a very 

 distinct one, and has been universally recognized. The species is not 

 uncommon in Texas, and in arranging the Museum material quite a 

 number of specimens were found in the various collections that were 

 incorporated. 



It at once struck me that there were two distinct forms, and further 

 study convinced me that there were two good species ; the genus, too, 

 proved to be rather peculiar, so that a complete description and study 

 seems not out of place. 



GENERIC DESCRIPTION. 



Head moderate in size, scarcely retracted, tongue weak, but distinct, 

 semi-corneous. Palpi small, in the $ scarcely exceeding the front, in 

 the 9 longer. Anteunie of the $ rather lengthily bipectinated to the 

 tip, the branches ciiiate; of the 9 simple. The eyes are naked, globose; 

 the ocelli present. The thorax and abdomen are untufted, the vesti- 

 ture hairy. The legs are subequal in length, the median tibine with 

 one pair, posterior tibioe with two pairs of short spurs. Tarsi sparsely 

 spinulose. As a whole the insect is moderately stout, the thoracic 

 vestiture rather shaggy; abdomeu short, not exceeding the secondaries. 

 Primaries moderate, trigonate, outer margin obliquely rounded ; 

 broader in the female than in the male. AYith twelve veins. Dorsal 

 or internal vein not forked at base, median vein giving rise to 2 at 

 outer third, and to 3, 4, and 5 at equal intervals fxom the tip, 6 and 7 



