[105] ON A NEW SPECIES OF HYPOCALA. 217 



an epoch in the collection of Noctuidse, and an important 

 chapter in their history. 



Hypocala Hilli n. sp. 



Antennae scaled ; under a microscope clothed with numer- 

 ous short cilia on each joint, and with fascicles of longer 

 ones, of the length on the basilar joints of about one-half of 

 their diameter. In proceeding from the base toward the tip, 

 these fascicles are less marked, until at about midway of the 

 antennae they have become changed into spinules, of which 

 there may be three or more on each joint ; toward the tip 

 these spinules extend beyond the numerous short cilia to 

 about once and a half the diameter of the joints, and are 

 visible, as are also the fascicles, under an ordinary magnifier. 



Palpi triangular, porrected, pointed, slightly beaked, pale 

 brown sprinkled with black scales, as are also the head, pro- 

 thpracic tufts and thorax: these latter tinged with ochraceous. 



Abdomen yellow, the basal segments bearing some long 

 dusky hairs. Segments 8-11, with a fuscous or black spot 

 (black on the posterior ones) on their anterior two-thirds, ap- 

 proaching in form two mesially connected small segments of 

 a circle. On the last segment a large black spot, triangular 

 in front, extending on the sides and on the long anal tuft, 

 of which the terminal portion is yellow, tipped with dusky. 

 Sides of the abdomen with a row of live small black spots, 

 and with its under surface pale yellow, sprinkled with black 

 scales. 



Wings : primaries sprinkled with black scales on a pale 

 brown ground, which shows a distinct violet shade in a 

 certain light, especially on their outer half, with a slight pale 

 green reflection near the bage on the inner portion of the wing. 

 Costa delicately striated transversely with darker brown. 

 Median lines and discal spots absent ; the reniform traceable 

 in a scarcely perceptible encircling line when sought for with 

 a magnifier. Subterminal line ferruginous, bordered on each 

 side with black, extending from opposite the cell just above 

 vein 4, outwardly in two or three teeth to near the margin, 

 then bending backward, and with some gentle curves, reach- 

 ing the internal margin near the angle. The terminal line 

 black, waved, and a yellowish one at the base of the fringe. 

 The fringe brown, tipped with a darker shade. Secondaries 

 of a luteous yellow, with their greater portion black, as fol- 



