238 BRITISH LEPIDOPTERA. 



brown. In size the males in our collection vary from 49mm. — 67mm., 

 the ? s from 62-51111x1. — 87*51111:11. (Morton notes Scotch 2 s up 

 to 87mm. and Meyrick to 85mm.) Chapman gives the following 

 notes on the antennae: u $. Length, nmm. of about 46 joints; 

 longest plumule about i^mm. long. Broadly, this is a Lachneid 

 antenna, in the bend (about 16 to 20 segments), and in the lop-eared 

 arrangement of the plumules springing from the ventral aspect of 

 the segments. It differs in the irregular arrangement of the hairs 

 on the plumules, which are not in regular rows as in Lachneids, 

 and in their carrying no baton, but only a bristle. To say that the 

 hairs are irregularly placed is perhaps incorrect, since they seem 

 to be placed very regularly, but not in any row or describable 

 pattern. The dorsal scaling of the shaft is very sparse and hair- 

 like ; the scales are more scale-like distally, quite irregular, and in at 

 least 4 rows. No scales on plumules. The plumules have a sweep- 

 ing bend forwards towards their apices at a point where there is 

 a somewhat clubbed thickening, beyond which they taper to a 

 rather smaller apex. ?. Length, 10mm. of about 44 joints; scaling 

 sparse as in $ ; plumules short (o^mm. longest), somewhat clubbed, 

 and more distally bent forward towards their apices; a small terminal 

 bristle ; hairs much fewer and shorter than in $ s, they tend to invade 

 upper surface towards ends of plumules {in litter 



Gynandromorphism. — The following gynandromorphous ex- 

 amples have been described or figured — 



a. Left <? , right ? . Figured by Ernst, Pap. oVEur., pi. i ; supp. CL, Ic. f. 

 i6q m — n ; Lefebvre, p. 148. Borkhausen [Rhein. Mag., i., p. 327) mentions 

 (without describing it) this hermaphrodite as being in Gerning's collection, and 

 bred at Solingen. 



/3. Right S , left ? . Completely gynandromorphous ; abdomen ? , but on 

 the right side coloured like the $ ; anus very hairy ; genitalia not visible. Vienna 

 Museum, from Mazzola's collection (Ochsenheimer, Die Schmett., iv., p. 187 ; 

 Rudolphi, p. 52 ; Burm., p. 340 ; -Lefebvre, p. 147). 



y. Right $ , left ?. Halved, gynandromorphous; the thorax also divided. 

 Figured and described by Ballion, Hor. Soc. Ent. Ross., iv., p. ^^, pi. i., fig. 2 

 (1866— 1867). 



d. In all respects a <? , except that it has a ? antenna on the right side. Bred 

 at Zurich (Wiskott, Festschrift Ver. Schles. Ins., (1897), p. 124). [This would 

 appear to be the specimen, bred by Standfuss and sent to Wiskott, that is men- 

 tioned Illus. Woch. fur Ent., i., p. 384, where we read: " Another gynandromorph 

 bred by Staudfuss, is in the possession of Herr Wiskott of Breslau.''] 



e. Incomplete. In all respects a <s except that the right antenna is ? in 

 form (Schultz, ///. Woch. fur Ent., ii., p. 462). [There is nothing to show whether 

 this is or is not the same as the preceding.] 



£. Right <? , left ? . Coloration of wings very intense ; left antenna (much 

 crippled) male, right female. Dividing line on body present ; the scales of the body 

 on the right of the line brown, on the left whitish-grey ; on the left side of the anus 

 a claspcr and anal tuft are visible ; on the right the body is considerably more 

 bulky, and at the end of it the retracted ovipositor can be clearly distinguished. 

 From Berlin. In the Daub coll., Carlsruhe. Described by Gauckler (Schultz, Illus. 

 Woch. fur Ent., ii., p. 462). 



?/. A male example with distinct whitish female coloration. In the Bernard 

 coll., Dantzig (Schultz, Illus. Woch. fur Ent., ii.,p. 462). 



0. A similar example in the Rosser collection, Berlin (Schultz, illus. Woch. 

 fur Ent., ii., p. 462). 



i Body left side completely ? , inclusive of antenna and wings, right side 

 throughout £ ; a line, only perceptible with strong lens, divides the body from 

 the front of the head to the anus into two halves ; while the ? side of the thorax 

 is more arched and fuller, the S part is stronger and longer - haired ; in the ab- 



