c 



248 



iimrkt is straijihter. I)iil fach v.^iii is sli^fhtly ciirved. Legs as in Tliamiionoma, 

 beini? louiT and slrnder: iiiiul til)i;i" scarcely swollen; the tarsi three-fourths 

 as iontf as the til)ia-. The male abdomen is rather stout, less slender than in 

 'riidiiuiOKonui. 



The only species known is ochreous-yellow, with an ouler row of sub- 

 hyaline patches common to l>oth wings. 



It closely resembles Thaiiiiiomma hiuvneiuia in the form of the head, 

 antenna?, and palpi, and shajjc and venation of the wings, diiforing in the 

 lonp-er pectinations and stouter abdomen and mode of coloration. 



This may be regarded as a mimetic form, as it imitates Jhni.ras of Europe 

 (of which we have no species) in the mode of coloration and in the stout 

 al»(lomeu, and the colors of the larva, which probably caused it to be referred 

 with (h)ubt to AhKi.ms \)\ Dr. Fitch, who says that it cannot be referred t(j 

 Abra.vas, this also being the opinion of Dr. Harris. I regard Abraxas as a 

 synthetic geiuis, anticipating lliamnonoiiKi. As Dr. Fitch was I he first to 

 make known this moth, and describe its (ransformations, 1 respectfully dedi- 

 cate the genus to him. 



EuFiTcniA RiiJEAKiA Packard. Plate 9, tig. (il. 



Ahruxasf ribcaria Kit.cli, Tiaus. N. Y. Ar. S^hc., ^'ii. 1848. 



5 c? and f) 9. — This common moth may i)e readily recognized by the 

 uniform yellow ochreous tint on boily and wings, and by the snlniiarginal 

 row of smoke-colored spots common to both wings, llie spots in the midd.le 

 of (;ach wing being large. On the i()re wing is a discal dot, sonu-times a row 

 of spots running over it, with two costal spots. 



Length of body, cf, 0.50. 9, iKbA; of fore wing, i, (J7, 9, O.fU; ex- 

 pan.'A' of winys, 1.2.5-1.30 iiu'lics. 



This moth is everywhere abundant in the Northern States, Hying in 

 gardens and resting on the leaves of the currant and other |)lants 



Xfljrrt.— Body smooth, cylindrical, of unitorm width throughout; head 

 as wide as the body, with four black spots; on each wing above four black 

 spots, and five on each side; ground-color yellowish-white. It appears on the 

 leaves of the currant as soon as they unfold in May, and attains its full size 

 in July, translorming into brown |)ui)a^ of the usual form just beneath the 

 surli^^ice of the soil under the Inish, the moth appearing early in July. It is 

 represented on Plate 13, lag. 2. 



s 



