FAMILIES LITHOSIID.n AND ARCTIID^. 225 



speckled upon a white or yellow ground. The larvae dwell in stony places, and many of 

 them feed upon the lichens that grow on the stones : some feed ui)on grass. 



Deiopkia BELLA. Beautiful Dciopeia. ( Plate xlvi, fig. 5.) 



Color of the forewings yellow, traversed by live or si\ wliite ijands : liands dotted in row 



with black. Posterior wings scarlet, though pale, and Iwrdered irregularly with dusky 



black or dark brown. Body white : thorax spotted with black. Exjianse of wing, 



nearly 2 inches, or 1 J inch. 



It is found in Albany county in mitlsummcr. , 



Arctiidac. 



The feelers and tongue mostly short aiul tliiclc. Antennre doubly feathered : feathering 

 narrow on tlie inner or upper side, and less distinct in females. Wings inclined : tliorax 

 thick. Both the caterpillars and motlis hairy or downy, especially the thorax and head of 

 the moths. They are more or less white, and ornamented with black or dark-colored spots 

 upon a white or buff-colored ground. They are nocturnal, or fly only by night. 



The caterpillars move rapidly, and are covered with hairs that spread out in tufts from 

 warts. They make, in clefts of rocks and sheltered places, rough cocoons of the hair of 

 their own bodies, interwoven with some fibres of silk. The chrysalis is smooth, and its 

 joints movable. 



Spilosoma acilea. Saltinarsk Caterpillar. ( Plate xli, figs. 2 - 5.) 



Spilosoma (Stephens). PnALiE.VA (Bombyx) acrea (Drury). Bombtx acbia ( Fabricius). 

 Arctia psecijerminea ( Peck). 



Male, upper side : Head and thorax white on the upper side ; lower side yellow V>uff, 

 embracing the wings, abdomen and thorax. Forewings cream-colored, marked and 

 margined with many black spots : hindwings buff, and marked with six somewhat 

 angular spots ; the lower side is deeper colored. Antenna; and eyes black. 



Male, lower «<fe, buff-colored. Forewings margined with five or six elongate black spots, 



the posterior margin dotted with black : the other black spots upon the disc show 



through the wing, and appear to belong to the upper side. Hindwings marked with 



seven or eight spots somewhat lunate in form ; one of which is quite prominently so, 



near the middle and outer margin of the wing, but stands in reverse position to one 



upon the margin. Abdomen of a buff upon the upper and inferior sid«s ; the sides 



being marked with a white line, which also extends to the tip of the abdomen : upper 



side ornamented with a row of black spots, and two rows tliat stand upon the margin 



of the white lateral line, and another line upon the lower and central part or face of 



the abdomen. 



[AoEicoLTcaAL Refokt — Vol. v.] 29 



