AMERICAN LEPIDOPTERA. 35 



larger size, different wing form and much darker, dull ground, 

 lacking the brightness and clear definition of the ordinary spots. 

 Indeed, with a series of these two forms, side by side, their differ- 

 ence is obvious. 



This is the species that I have been calling anfeunata of late 

 years, and have, erroneously, determined as such for my correspond- 

 ents. In consequence, all that Mr. Slingerland says of antennata in 

 Bulletin 123, of the Cornell Station, really applies to this form. 

 Further references to this matter will be found under antennata. 



From laticinerea this species differs in being much less powdery, 

 and having the median shade much less evident. The specimens 

 average smaller on the whole and the wings are more parallel. Yet, 

 with flown examples, there is sometimes a chance for doubt. 



The antennae of the male in this and the two following species are 

 practically alike under the hand lens. The joints are a little marked, 

 and they are laterally tufted with bunches of soft hair. 



Xyliua antennata Walker. 



1858, Wlk., Cat. Brit. Mus., Het., xv, 1738, Xylina. 

 1883, Saunder's Fruit Insects, 138, f. 138, Lithophane. 

 1893, Smith, Bull. 44, U. S. Nat. Mus., 228, Xylina. 



cinerea Riley. 

 1871, Riley, 3rd Rept. Ins. Mo., 135, f. 57, Xylina. 

 1874, Grt., 6th Rept. Peab. Ac. Sci., 34, Lithophane. 

 1879, Grt., Bull. Geol. Surv., v, 201, pr. syn. 



1881, Riley, Index to Mo. Repts., 74, Lithophane. 



1882, Riley, Papilio, ii, 43, 101, an sp. dist. ? 

 1882, Fernald, Papilio, ii, 63, pr. syn. 



1891, Butler, Entomologist, xxiv, 242, pr. syn. 

 Head, thorax and primaries rather bright asheu gray, with a purplish tinge. 

 Head whitish, with a dusky frontal line, antennae white at the base. Collar with 

 a blackish line near tip, surmounting a reddish shade, which may extend 

 throughout the lower portion, may merge into a whitish giay, or may form a 

 scarcely traceable line. Patagite with black subniarginal lines, sometimes white 

 shouldered at the base of the primaries. Anterior crest low, not divided in any 

 specimen before me; vestiture mostly flattened hair. Abdomen very light smoky 

 gray, without obvious dorsal tufts. Primaries with black basal streak extending 

 to basal half line, margined above with reddish scales, and including toward 

 costa a paler, sometimes whitish patch, which is usually a prominent feature in 

 the wing. Basal line geminate, not well marked. T. a. line almost upright, 

 irregularly dentate in the interspaces, best marked by the pale included shade, 

 the defining lines being scarcely darker than the ground color. T. p. line gemi- 

 nate, outcurved over the cell, almost equally incurved below it, included space a 

 little paler, defining lines hardly visible in most cases except as venular dots. 

 The line is therefore poorly marked and often hardly traceable. S. t. line 

 marked by a series of cuneiform, contiguous black spots, outwardly edged with 



TRANS. AM. ENT. SOC, XXVII. AUGUST. 1900. 



