1907. J MICROLEPIDOPTERA OF TEXEHIFE. 939 



edge, is an elongate dark streak, also edged above with whitish ; at the base is a 

 lilack limbal streak which does not occur in plutelliformis. When describing 

 sieiversiellus, Christoph had before him (unwittingly') specimens of hoth pliitelli- 

 formis and sieversi, both taken at Sarepta, and apparently both bred from Tamarix. 

 His description of siewersielhis was obviously taken from plutellifurmis, and 

 Staudinger und Wocke (Cat. Lp. Eur. 290) give the synonymy correctlj' thus : 

 1831. sieversi Stgr. 

 18-32. plutelliforniis Stgr. ; :=olbiaeUa Mill. ; =i sieiversiellus Chr. 



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

 and four specimens labelled " plutelliformis 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 siewersielhis 

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

 distinct from, but closely allied to, that of jplutelliformis {sieiversiellus), and 

 probably fed on Tamarix laxa ov j)allasii (vide Chr. 1. c). 



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

 formis Stdg." The tirst, received from Christoph in 1860, is labelled by Zeller 

 " Gelechia plutelliformis Stdg. E. Z. 59, 239 " : this determination is incorrect, it is 

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

 distinct from the first; it is, however, truly plHtelliformis Stgr. ( = sieiversiellus 

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

 to 2)kitelliformis, 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 " sieiversiellus Chr." On the 

 other hand, Christoph sent Hofmann, in 1871, four specimens of '' sieiversiella 

 Chr.", which are rightly determined by Hofmann as plutelliformis Stgr. 



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

 2o84!, plutelliformis Stgr.; — olhiaella Mill.; -sieiversiellus Chr.; —sieversi 

 Stgr. [ab.]. 



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

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

 idea that the verbal variants IIi/psolopJius sieiversiellus Chr. and GeleuJiia sieversi 

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

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

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



2o84'01. Gelechia sieveksi Stgr. 



(nee sieiversiellus Chr., = 2584. plutelliformis Stgr.) 



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

 Lp. Eur. 290 no. 1831 (1871) - ; Hrtm. MT. Miinch. Ent. Ver. IV. l6 no. 1831 

 (1880) •* [*in syn. plutelliformis Stgr-Rbl. Cat. Lp. Pal. II. 144 no. 2584 (1901) ■*"]. 



Hah. SE. RiTSSiA: Sarepta i-^, 29. VI. 1859, 16. VI. 1866, 1. VII. 1866, 14. 

 VIII., 18. VIII. 1866, 20. VIII. 1879 {Christoph), Tamarix'^. 



37. (2611-2) Gelechia lunariella, sp. n. (Plate LI. fig. 13.) 



Antennae shortly biciliate in J ; 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 bi'oader band before its 

 minntely pale apex ; the intermediate space pale rosy. Head 

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

 mixed with rosy reddish. Foreioings cinereous, varying to rosy 

 reddish ; sprinkled and sufiused with tawny grey and black 

 scaling, the latter for the mcst 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 



Proc. Zool. Soc— 1907, No. LXIII. 63 



