.NIK i;<>u;i>iij<)i>ri;i;.\ OK TENEKIFE. 939 



3 an elongate dark streak, also ed^ed above with whitish ; at the base is a 

 Mack limhal streak which does not. occur in ^>! iift-llifni'iinx. When describing 

 siewersiellus, Christoph had het'o.v him (unwittingly) specimens of bothplvtelli- 

 f i' in is and sieversi, both taken at Sarepta, and apparently both bred from Tamnri.e. 

 His description of gi&wergielltlt was obviously taken from plutelliformis, and 

 Standin-vr und \Vncke (Cat. Lp. Eur. 25)0) give the synonymy correctly thus: 



1831. \/i -rci-fti Sfgr. 



1832. pltitcllifarinis Stgr. ; = <tU><ai : lln Mill.; siewersiellus Chr. 

 Christoph's collection contains six specimens and a larva labelled " sieversi Stgr."; 



and four specimens labelled " plutellifbrmiA Stgr." These are all from Sarepta, 

 and are correctly determined, except that the third specimen of plutelliformis is 

 a worn example of an allied species distinct from both. The name siewersiellus 

 does not occur in the collection: the larva labelled "sieversi" appears to be 

 distinct from, but closely allied to, that of plutelliformis (sieiversiellus), and 

 probably fed on Tamari.v li.m or pallasii (vide Chr. 1. c.). 



Christoph sent /eller two specimens, which constitute Zeller's series of " plutelli- 

 formis Stdg." The first, received from Christoph in 1860, is labelled by Zelier 

 " Gelechia pint el I if or mis Stdg. E. Z. 59, 239 " : this determination is incorrect, it is 

 sieversi Stgr. The second specimen is not specially labelled, not being regarded as 

 distinct from the first ; it is, however, truly plutelliformis Stgr. ( = sieiversielhis 

 Chr.). When describing sieversi, Staudinger observes that, owing to its similarity 

 to pi ut ell if or in is, he had at first thought it that species, but, recognising its 

 distinctness, he retains for it the name given by Christoph in honour of the now 

 unfortunately deceased entomologist Sievers. It is therefore presumable that 

 Christoph sent Staudinger sieversi Stgr., labelled " siewersiellus Chr." On the 

 other hand, Christoph sent Hofmann, in 1871, four specimens of " siewersiella 

 Chr.'', which are rightly determined by Hofmann us plutelliformis Stgr. 



In Staudinger and Hebel's Catalog (II. 144) we find both species united thus : 

 2584. plutelliformis Stgr.; olbiaella Mill.; = siewersiellus Chr.; sieversi 

 Stgr. _ab.]. ' 



The confusion caused by both species occurring at Sarepta, and both species being 

 distributed by Christoph as " siewersielhis," has doubtless suggested the erroneous 

 idea that the verbal variants Hypsolophus siewersiellus Chr. and Gelechia sieversi 

 Stgr. pertained to mere varieties of one species. Staudinger's two species are 

 undoubtedly distinct, and we must revert to the synonymy of Staudinger and 

 Wocke's Catalog, correcting that of Staudinger and Rebel thus . 



^ 2584-01. GELECHIA SIEVEKSI Stgr. 

 (nee siewersiellus Chr., - 2584. plutelliformis Stgr.) 



Gelechia sieversi Stgr. Berl. Ent. Zts. XIV. 309-10 no. 91 (1870) J : Stgr-Wk. Cat 

 Lp. Eur. 290 no. 1831 (1871) - ; Hrtm. MT. Munch. Ent. Ver. IV. 16 no. 1831 

 (1880) :i [*in syn. plutelliformis Stgr-Rbl. Cat. Lp. Pal. II. 144 no. 2584 (1901) 4 ]. 



Hab. SE. RUSSIA: Sarepta 1 - 4 , 29. VI. 1859, 16. VI. 1866, 1. VII. 1866, 1 

 VIIL, 18. VIII. 1866, 20. VIII. 1879 (Christoph), Tamarix 1 . 



:>7. (2611-2) GELECHIA LUXARIELLA, sp. n. (Plate LI. fig. 13.) 



Antennae shortly biciliate in ci ; blackish, spotted with rosy 

 reddish above. Palpi moderately biserrate beneath ; rosy whitish, 

 speckled and ringed with black, the terminal joint having a 

 black ring before its middle, and a broader bind before its 

 minutely pale apex ; the intermediate space pale rosy. Head 

 steely greyish, with rosy iridescent scale-tips. Thorcuc black, 

 mixed with rosy reddish. Forewings cinereous, varying to rosy 

 reddish , sprinkled and suffused with tawny grey and black 

 scaling, the latter for the most part slightly raised, and exhibited, 

 especially on the base of the dorsum, in an outwardly oblique, 

 narrow, partially interrupted, transverse fascia at about one-sixth 

 from the base ; in a patch on the middle of the cell, another, 

 toward the end of the cell, produced downward to the dorsum at 



Pitoc. ZOOL. Soc. 1907, No. LXIII. 63 



[29] 



