Explanation of Plates. 



177 



Plate XLII. Fig. 1. A. thersites, x 25. 



Fig. 2. P. eros, X 25. These show the prop and 

 rein only partially exserted. The ever- 

 sion begins at the attached end of the 

 prop, the end carrying the rein is the 

 last portion to be reversed. 

 Compare with PI. XXXI. 



Plate XLIII. Fig. 1. PI. aegon, X 25. 



Fig. 2. PI. argyrognomon, X 25. The latter shows 

 the duct very plainly and also the want 

 of a strong terminal plate. Refer also 

 to PI. XXXIV. 



Plate XLIV. Fig. 1. PI. zephyrus, x 25. 



Fig. 2. PI. cleobis, x 25. Fig. 1 illustrates a cir- 

 cumstance not at present before us, 

 viz. that an egg reaches sometimes the 

 end of the ovipositor, at the death of 

 the butterfly, probably as a detail of 

 dying, and then afterwards matures, 

 but being within the ovipositor cannot 

 emerge. In macerating the specimen 

 the egg and larva is apt to be lost, unless 

 specially looked for ; without looking for 

 it I have met with it often enough to 

 believe that it is really a very frequent 

 occurrence. 



Plate XLV. Fig. 1. Plebeius isaurica, x 25. 

 Fig. 2. Aricia donzelii, x 25. 



Plate XL VI. Fig. 1. Aricia medon, x 25. 



Fig. 2. Cyaniris semiargus, X 25. The form of 

 the terminal plate in medon much re- 

 sembles that in Chilades. 



Plate XLVII. Fig. 1. L. orbitulus, x 25. 



Fig. 2. V. optilete, x 25. These two preparations 

 are badly cleaned of scales, etc. 



Plate XLVIII. Fig. 1. T. telicanus, x 25. 



Fig. 2. P. martini, x 25. 



Fig. 3. E. argiades, X 25. Fig. 2 is a fairly 

 normal Polyom mat us, but being only 

 partially expanded — compare with 

 PI. XXXI and XLII — it has a curious 



