270 THE CANADIAN ENTOMOLOGIST. 



It was fancied at first that some relationship could be established with 

 Harrhii or ruiila, but this failed in a careful study of details, and it 

 therefore becomes necessary to advance a distinguishing name. 



Papaipema Merriccata, n. sp. — Form and habitus normal; ground 

 colour sordid chrome-yellow, or tawny. Head, thorax and primaries 

 heavily powdered with purplish-brown scales. Abdomen and secondaries 

 much lighter and devoid of the pronounced yellow tint. Head and collar 

 of the same shade of purpHsh-brown, the latter edged above with yellow. 

 Anterior tuft and patagia heavily scaled in the same colours. Primaries 

 not contrastingly marked, a white scale at base ; basal area tawny-yellow, 

 never white ; t. a. line of the usual irregular course, enclosing a dull 

 purplish area ; t. p. line plainly geminate, always broadly out-curved over 

 the cell. The median field shows the yellow ground colour most strongly; 

 the median shade line is brown, most distinct in lighter specimens, and is 

 traceable to the lower end of reniform. S. t. line as usual, irregularly 

 dentate, the subterminal space entirely purplish, though tempered from 

 much contrast by the general powdering of brown scales. Outwardly this 

 line is illumined by yellow scales defining the terminal space, which is 

 lighter than the subterminal, excepting the usual light yellowish patch at 

 the apex. Reniform moderate, broken by the veins and white, except the 

 upper outward portion and the central lunulate mark, which are of the 

 ground colour. Orbicular rounded and white ; claviform separate, 

 double, the lower half about the size of the orbicular. The veins are 

 discernible on the secondaries, being outlined by darker scales ; occasion- 

 ally a median line may be traced, followed by a faint clouded band. The 

 male structures, while typical, offer some points of individuality ; the 

 clasper is not prominently toothed outward, as with riitiia and others, 

 and the lower lobe of the harpes is bare of the usual spinules. Expanse, 

 34-43 mm.; i. 34-1. 75 in. Thirteen examples, embracing both sexes, are 

 at hand. Co-types will be placed in the British, the U. S. National and 

 the Merrick Museums. 



The species approaches rutila closest superficially, and might easily 

 be considered a variation of the imago at first glance. It is presumed, of 

 course, that we have the rutila of Guenee propeily identified in the form 

 occurring commonly in the Montreal section, and which has been 

 repeatedly confirmed by comparisons with the type. Had Guenee only 

 known and have given the name of its food-plant, how little else would be 

 needed ! In any event, Merriccata is distinct from that species, being 

 relatively larger, less brightly coloured, structurally different in the male 



