( ATOCALA OBSCURA, NOV. SP. , 



(PLATE III, FKi. 4 cf ) 



KxpandfS 2] to '1\ inches. 



Thorax above, dark grey; abdomen black; bcncatli dirty white. 



Upper surface, primaries dark smoky grey, pretty evenly colored ; transverse anterior 

 and posterior lines black, varying somewhat in width and distinctness in <liffercnt examples ; 

 a sub-terminal grey band between two brownish ones ; in some examples an almost obsolete 

 reniform, but in the majority this appears to be replaced by a small round deep brown or 

 black discal spot; sub-renit'orm open. 



Secondaries black ; fringes white, ami in some cases black and white. 



Under surface white, with black bands. 



Habitat. New York. 



I received a number of this species from ^Ir. Angus who took them in the v-icinity of the 

 village of West Farms, N. Y. ; he says they arc difficult to discover, as they secrete themselves 

 in the crevices beneath the bark of trees, and the rustling of leaves, &.C., will not start them 

 from their hiding j)laces ; nothing short of hard raps against the tree trunks will do it. It 

 does not appear to be very rare ; I have seen examples in various collections for a number of 

 years past under the name of Ivaclirymosa, A'idua, and Insolabilis, so to get it out of its ob- 

 scurity, and as its ap[)earance is more (ibscure tliaii any of its allies, I have ciiristened it accord- 

 ingly. 



]\[av 1st, 1S7:!. 



CAT0(;ALA relict a. Walker . 

 ■'. C.\TOCALA FRAXINI, GUENEE, SPEC. GEN. VOL. VII, p. 81!. 



( PLATE III, FIG. 5 J', 6 9 ) 



Maj.k. Expands about L! inciics. 



Collar white; thorax aljove white, mottled with black; abdominal segments blackish, 

 edged exteriorly with white ; beneath whole body is white ; anal tuft white. 



Upper surilice, primaries white, with a di.stinet row of black terminal spots ; basal iiatcli 

 black, transverse bands and lines almost lost in C3ntre of wing, but become more distinct as 

 they near the costal and interior margins ; reniform spot tolerably distinct, sulj-reniform 

 almost obsolete. 



Secondaries black, with a regular narrow white median baud ; the discal spot of under 

 surface is visible, the basal part of the wing not being as dark as the balance; fringes white. 



19 



