PAMI'IIILIDI: THE GENUS THYMELICUS. 1689 



on the south, with tlie corresponding region to the west — especially about 

 the northern limits of the Adirondacks — should receive the careful attention 

 of observers, to learn, in each locality, whether the insect is single or 

 double brooded. Quite as important is it to trace the complete history of 

 the insect after the eclosion of the caterpillar, and particularly to determine 

 in what condition and surroundings it passes the long winter. It would 

 be interesting to know just how soon after the apparition of the females 

 they begin to lay eggs, to collect the possible parasites which attack the 

 insect and to note the peculiarities of the flight of the butterfly. 



LIST OF ILLUSTRATIONS.— POLITES PECEIUS. 



PI. 13, fig. 12. Male, both surfaces, in black. 

 li. Female, both surfaces, in black. 

 37: 24, 25. Male abdominal appendages. 

 42 : 13. Xeuration. 



43 : 18. Discal stigma of fore wing of male. 

 50:2. Scales of the discal stigma. 

 59: 5. Side view of head and appendages 

 enlarged, with details of the structure of 

 22. Female, upper surface, colored. the legs. 



THY^NIELICUS HUBNER. 



Thymelicus Hiibn., Yerz. bek. schmett., 113 Hesperia pars Auctorum. 



(1816) ;— Scudd., Proc. Am. acad. sc, x: 283 Pamphlla pars Auctorum. 



(1875). Pyrrhosidia Scudd., Mem. Bost. soc. nat. 



Hedone Scudd., Syst. rev. amer. butt., 58 hist., il: 346, note (1874). 



(1872). Type.— Thymelicus vibex Hiibn. 



A hi^h clilT-meadow lush with spring; 

 Gay butterflies upon the wing; 

 Beiieath, beyond, unbounded, free, 

 The foam-flecked, blue, pervading sea. 



Lewis Morris.— 4 Spring Picture. 



Imago (60: 1, 2). Head pretty large, heavily clothed with rather short hairs ; just 

 outside of the antennae a slightly spreading compressed tuft of arcuate hairs passing 

 rather less than one-third VN-ay over the eye. Front protuberant, not very tumid, 

 ■wholly but not greatly surpassing the front of the eyes, a little more prominent than 

 elsewhere in a slightly elevated, broadly rounded, transverse ridge across the middle; 

 the whole piece from two and one-half to two and three-fourths times broader than 

 long, the front border margined and in the middle a little elevated, very broadly 

 rounded, so that the piece appears nearly quadrate, roundly docked at the outer front 

 angles; separated from the vertex by a slightly arcuate sulcation opening backward, 

 varying in depth in the ditterent species. Vertex a little tumid : its anterior two- 

 thirds extending slightly beyond the summit of the eye, a little arched longitudinally, 

 slightly bowed transversely at the sides but flattened, or even slightly depressed in the 

 middle, separated from the occiput, which has a rather slight, longitudinal, central 

 sulcation, by a distinctly impressed brace-shaped line, whose limbs incline but little. 

 Eyes large, pretty full, nearly circular, naked. Antennae inserted in the middle of 

 the summit, separated from each other by about two and one-lialf times the diameter 

 of the basal joints, the whole antenna as long as ( ? ) , or somewhat shorter than ( <? ) , 

 the abdomen, composed of from thirty-flve to forty joints, of which from seventeen 

 to twenty-one form the club, which is about half as long as the stalk, and, excluding 



