CELASTRINA ARGIOLUS. 



389 



rubbed over the upper surface of the forewing of the male, it will be 

 found to have an odour, excessively faint, indeed, but perceptible, 

 which can only be compared with the odour of crushed- violet stems, or 

 perhaps, to newly-stirred earth in spring. No odour is perceptible 

 when the same experiment is tried with the female." 



Male genitalia. — Clasps ovate but flattened on the lower side, 

 deeply excavated in a curve at the lower frontal extremity, the upper 

 extremity produced into a long, straightish, tapering hook, bearing on 

 its outer edge a series of about four saw-like teeth. Girdle short and 

 strong. Tegumen very ample, extending far down the girdle; "in situ" 

 it is saddle-shaped, with a high pummel in front and at the back ; the 

 apex, represented by the front pummel, is raised into a narrow collar. 

 The lower part of the front is produced forward, roughly quadri- 

 laterally, and has two shortish teeth instead of the usually long hooks, 

 for which I have used the term "falces." Penis-sheath shortish, 

 fairly stout, slightly waved in outline, and tapering at the apex 

 (Bethune-Baker). The upper organ furnished outside posteriorly 

 with a bulbous, subtriangular lobe, bearing at its inner extremity a 

 short, pointed, inward-directed thorn ; clasps with the bulbous base 

 rather large, the thorn a little curved and fully one-fourth as long- 

 again as the base (Scudder). [See also pp. 390-391.] 



Gynandromorphism. — The following are the only references we have 

 gathered concerning gynandromorphic examples of this species : — 



1. — A very perfect gynandromorph. The right wings blue without black, the 

 left wings with an unusually wide black margin ; the latter pair of wings larger 

 than the other pair. Captured July 10th, 1865 (Tuely, Ent., ii., p. 295). 



2.— Eight side s , left side ? . Sold with the " Briggs' coll.," October 27th, 

 1896, at Stevens' sale-rooms, for £3 3s. (Ent. Bee, viii., pp. 221, 272). [Noted 

 also Nat. Journ., April, 1896, p. 10.] 



3. — Eight wings S , left wings ? ; the markings of the underside normal. 

 The abdomen appears to possess the characters of a ? . Wing expanse l-25ins. 

 Captured August 8th, 1904, at Torquay; the example was freshly-emerged, and 

 settling in the middle of the road (Clutterbuck, Ent., xxxviii., p. 91). 



4. — Eight wings J 1 , entirely blue ; left wings ? , bordered with black. 

 Captured September 3rd, 1902, at Hardwicke Heath, Bury St. Edmunds, caught 

 flying around a holly-tree (Norgate, in litt., June 23rd, 1907). 



5. — Left 3 , right ?. Wings of either side presenting the normal sexual 

 peculiarities of size, colour, and markings. Left antenna somewhat longer than 

 the right. The last abdominal segment curved round to the right. Genitalia 

 of both sexes present. Found in the Lossnitz, near Dresden, by Peschke, on 

 May 10th, 1896 (Wiskott, Iris, 1897, p. 380, pi. x., fig. 5 ; Steinert, Iris, ix., p. 345). 



6.— Eight side S , left side ? . Small. The antennae appear alike and 

 proportionate with the size of the insect. The abdomen terminates on the c? side 

 as c? , the left side is not easily examined, as it curves round out of sight ; on the 

 whole, the abdomen is generally shorter and stouter than is normal in the s • 

 The example was taken at Cranklow Wood, Yorkshire, May 4th, 1903. In Clark coll. 

 Noted Ent., xxxvii., p. 85; Proc. Sth. Lond. Ent. Soc, 1903, p. 69 (Burrows, 

 in litt., December 5th, 1907). 



7. — A gynandromorph of this species is in the Staudinger coll. (in litt.) 

 (Schultz, III. Woch. fur Ent., ii., p. 380). 



8. — Left wings s , right wings ? . The genital organs appear to be those of a 

 male (Edwards, Butts. Nth. America, ii., Lye. pi. ii., fig. 23). Captured June 6th, 

 1880, at Coalburgh, (Edwards, Can. Ent., xii., p. 160). Dr. Holland, in 

 whose collection the specimen now is, removed about 150 scales from the cT side, 

 among which androconia were discovered, an examination of the opposite side 

 discovered no androconia, so that, in this strange example, the <? side preserves 

 such microscopic features as the androconia (Scudder, Butts. New Engl., ii., p. 934). 



9. — A specimen of the summer form neglecta, the wings on the right side 

 typical cT , those on the left heavily-bordered with black and equally typical of the 



