HOLCOCERUS. By Dr. A. Seitz. 423 



dian and submedian veins traversed by white longitudmal lines, the two upper ones anastomosing at the apex 

 of the cell. Antennae very long, as in the preceding. Fringes chequered, abdomen much stouter. 



H. gracilis Christ. (53 f). The smallest species of the genus; forewing with transverse lines, a dark gracilis. 

 patch beyond the cell, ground-colour whitish grey variegated with greyish brown. Hindwing uniformly brown- 

 ish grey. Fringes long, traversed by the dark vems. The antennae are two-thirds the length of the costa. 



H. lucifer Gr.-Grsh. Stout, forewing more stumpy at the apex and hind angle, grey marbled with ludfer. 

 a darker colour, with black transverse stripes and striae. Hindwing darker, light brownish grey, striae dark 

 brown. — Described from a cj of 30 mm. from the Sinin Mountains. The species is not known to me, and 

 the author's description is applicable to quite a number of forms. 



H. strioliger Alph. (53 f). Much stouter, larger and heavier than the preceding forms. Forewing slrioliger. 

 whitish with a darker cloud in the disc, which usually encloses a prominent light cell-spot. The entire wing 

 with shai^p bright bro\\ni transverse striae, some of the latter merging together to form chains; hindwing 

 du'ty brownish grey, lighter below the middle of the costa, traversed by the dark vems. Head and collar 

 yellowish or whitish. — From Central Asia. 



H. nobilis Stgr. (53 f). This species conies near to the preceding one \n facies and size, but instead nobilis. 

 of the dark striae the forewing bears numerous golden brown dots and shadowy smears, which are merged 

 together to form indistinct oblique bands and central smears interrupted by the whitish veins. From Tur- 

 kestan. — difficilis Stgr. (53 f), from Kushk, is a sti'ongly divergent, usually smaller, form with very spar.se difficilis. 

 golden brown dots, m which the smears of the forewmg are suffused witli pale ochreous and the hindwing 

 with pale yellowish brown. 



H. zarudnyi Gh\-Grsh. Very closely allied to the preceding, but the abdomen is white with dark zarudnyi. 

 brown rmgs. Forewmg more white, the shadowy dots arranged differently, not mei'ging together. Abdomen 

 almost white, without submarginal dot. 38 to 46 mm. — Persia, Provmce of Bampur. 



H. sericeus Gr.-Grsh. (53 g). Comes from the Pamir; one of the forms most often reaching us. Size sericeus. 

 as in the preceding; ground-colour white, the light oclu-eous colour distributed over the forewing in the 

 shape of irregularly arranged minute dots, striae and specks; head and thorax of the same delicate yellow. 

 Abdomen and hmdwing dull white. 



H. tancrei Pilng. (53 f). Wmgs white, with narrow golden brown veins. Beyond the cell between tancrei. 

 the vehas there are 5 or 6 elongate ovate drop-shaped spots arranged as a cham ; apex and fringes of forewing 

 dotted with bright brown. Our figure of this magnificent and characteristic form is taken from the tjrpe 

 from Merv in coll. Pungeler, which was very kmdly placed at our disposal. 



H. gloriosus Er.sch. (53g). Body and wmgs silvery white; forewing with ochreous dots in the cell, gloriosus. 

 between and above the median branches and at the distal portion of the costa, where they may merge to- 

 gether to form a pattern. — From Turkestan. 



^^^T^ H. faroulti Oberth. (52 i). Very like gloriosus and may be considered as the North African represent- farouUi. 

 ative of that species; white, the dots more dark brown than golden brown, and some of them arranged so- 

 mewhat differently from those of the Asiatic gloriosus. — • Only found a few years ago. 



H. laudabilis Stgr. (53 g) is a very similar form from the Dead Sea, perhaps also a .subspecies of glo- laudabilis. 

 riosus, smaller and with the ground-colour purer white than in that species. The bright yellow spots are lighter, 

 smaller and somewhat more sparse, but before the apex they merge together to form a narrow oblique band. So- 

 metimes they are all so pale and indistinct that a glimmer of them can be seen only in a certain light. Hmdwing 

 as in the preceding forms pure white. 



H. holosericeus Stgr. (53 g), from Ferghana (Turkestan), is quite white, both wmgs with a hv'ighi holosericew. 

 silky gloss, vertex and anterior side of thorax slightly tinged with yellowish. 



H. sacarum Gr.-Grsh (53 g). This species and the following one, which probably do not belong to aacanim. 

 this genus, are much smaller than theprecedmg forms and are more like mme Dysjyessa. H. sacarum is greyish 

 sandy yellow with lighter spots beyond the centre and an obsolescent yellowish submargmal band. 



H. powelli Oberth. (52 h) is, next to gracilis, the smallest species of the genus; dull loam-grey, den- powelH. 

 sely striated with dark brown in such a manner that the striae beyond the centre are grouped to form a dark- 

 er spot and those in the marginal area a submarginal band. Length of forewing scarcely 10 mm. — Al- 

 geria, Tunis. 



A small number of forms belonging to this genus still remain which \iere mostly described by Aitstaui', but which 

 are not known to me in nature We therefore append the names and localities. They are persicus Ausf., stru/afus Aiis(.. 

 mnrmoratus Aust., iranicus Aust. They are either from'Persia (?) or from Turkestan. In Staudingeb-Rkbei.'s Catalogue 

 they are all marked with a query. The other Persian or Turanian forms have evidently not been before the author. In 

 answer to our inquiries the latter informed us that the types had been handed over to a dealer; it would therefore per- 

 haps be best to suppress the forms, but for the sake of completeness we give their descriptions in the appendix. 



