b THE ENTOMOLOGIST. 



species lacks a row of terminal dots which are present in rufe- 

 scentarla. 



A third genuine Zethenia (for Staudinger's other two are 

 entirely out of place here) was described from China by Leech 

 in 1897 as contiguaria (Ann. Mag. Nat. Hist. (6) xix. p. 223). In 

 addition to its dark colour it is quite easily known from the two 

 older species by the more gently convex (not elbowed) termen of 

 the fore wing, and by characteristic pale marks between sub- 

 median and first median veins (veins 1-3) at the postmedial 

 line. Warren's Z. ohscura (Nov. Zool. vi. p. 6Q) from Formosa 

 is either a synonym of contifjiLaria (so Swinhoe, Trans. Ent. Soc. 

 Lond. 1902, p. 613), or at most a slight geographical race. 

 Perhaps the termen of fore wing is even less convex (or less 

 concave below the apex), and if it be separable on this ground a 

 female from Chekiang in coll. Brit. Mus. should be associated 

 with it. Bastelberger, in his new Catalogue of the Geometridae 

 of Formosa, records only one Zethenia — Z. rufescentaria — one in 

 good condition in coll. Moltrecht (' Iris,' xxii. p. 175). No de- 

 scription is given, but it hardly seems likely that he took a 

 contiguaria (ohscura) for a form of rufescentaria. 



Before describing the new species I may add that Leech, in 

 his well-known paper, briefly mentions two aberrational forms. 

 Z. rufescentaria var. [ab.] grisearia, Leech (Ann. Mag. Nat. Hist. 

 (6), xix. 223), refers to the greyer forms, which often have the 

 central area darkened ; these seem more frequent in the female, 

 the redder forms in the male, but the variation is not wholly 

 sexual ; the name can therefore stand as aberrational, consoci- 

 aria being mainly synonymous with type (see Bull. Mosc. 1880 

 (2), p. 68). The other aberration mentioned {loc. cit.), and 

 which Leech was mistaken in supposing to be Christoph's con- 

 sociaria, consisted of two light specimens which are still trace- 

 able in his collection, and which must have been studied less 

 closely than most of his material ; one of the specimens (from 

 Nagasaki) is a light albonotaria; the other (from Ningpo) belongs 

 to the new species (see below). 



Zethenia inaccepta (Warren MS.), mihi, nov. sp. 

 (? ? , 40 mm. Wings shaped nearly as in Z. contiguaria, Leech ; 

 apex of fore wing acute, distal margin straight or faintly sinuate inwards 

 below apex, slightly gibbous behind cell ; distal margin of hind wing 

 somewhat crenulate, but less strongly than in albonotaria. Ground 

 colour pale yellowish brown (slightly yellower in the male), densely 

 irrorated with purplish fuscous, the fuscous scales absorbing nearly 

 the entire marginal area of fore wing for a breadth of about 5 mm., 

 in the male leaving only a few apical scales of the ground colour, in 

 the female a conspicuous pale apical mark, and irregular pale mark- 

 ings elsewhere in this dark area ; male in addition strongly clouded 

 with purplish fuscous over the greater part of fore wing, and nearly 

 the whole of hind wing (variable in individual specimens), tending to 



