389 



premise that it was one of the allied western species. Our researches 

 have led us to believe that cupatorii is not western, hence we have only 

 two species, mathcivianus and gnttains which can be crctidactylus Zell. 

 For the same reason true guttatus can hardly be cupatorii, as placed in 

 the Walsingham collection. Zeller identified his conception of Fitch's 

 species from Walsinghani's material, and we should be inclined to 

 believe that he was capable of separating it properly from his own 

 mathczi'ianus. At the same time it seems unlikely that Walsingham 

 would have faileil to recognize it as conspecific with his guttatus if 

 such were the case. Apparently then there is a third species from the 

 west which we do not know, or one of the two men was confused by 

 the variation of the species, which seems the more likely. As to the 

 actual identify of guttatus, we first regarded mathczi'ianus as this spe- 

 cies. Meyrick corrected us in this, and noted that the types of Guttatus 

 in the Walsingham collection were placed in the series of cupatorii. 

 Later we were able to examine three paratypes of guttatus in the Fer- 

 nald collection, and at first thought them to be a true mathczvianus. A 

 more careful examination convinces us that they are pale and rather 

 faded specimens of what we now call guttatus, so it seems likely that 

 Walsingham had a variable series of this species under two names, 

 crctidactylus and guttatus, and we place the references accordingly. 

 On the other hand, Walsingham"s mention of crctidactylus Zell. as a 

 pale form of grisescens suggests mathezvianus rather than guttatus. 

 Unfortunately the abdomens of the paratypes in coll. Fernald arc 

 lacking, so we are unal)le to eramine either the genitalic structure 

 or the abdominal markings. Fernald's figures of the genitalia do not 

 show the distinctive structure, viz., the left harpe. 

 The early stages are unknown. 



6. OlDAEMATOPHORUS ALA.SKENSIS n. sp. PI. XLV, fig. 17. PI. LI, 



fig. 6. 



Alaslccn.ns is almost identical in pattern with guttatus, but is extremely 

 dark. The description of matliewianus will therefore apply to the body and 

 wings, but the parts mentioned as whitish are brownish, and the white is lim- 

 ited to a thin superficial scaling over the paler areas. The fringes have only 

 a pale pencil on each lobe before apex in place of the extensive white areas. 

 The abdomen has dorsal tufts as in guttatus, but less prominent, and on the 

 first segment has two heavy black dashes following the white terminal area of 

 the thorax. The tarsi are heavily annulate with brown and the hind tibiae 

 are brown with two pale annuli. Expanse 26-28 mm. 



