NOTES ON THE HABITS AND LIFE-HISTORY OF ORGYIA SPLENDIDA. 45 



tapering to the tarsal end. Beyond this is apparently only one piece, 

 equal to the tarsus and claws ; it is a solid knobbed mass carrying two 

 very strong, very curved claws, more than 0-12mm. in length, if 

 measured along the curvature. There are a few bristles on the femur 

 and tibia, the colour of the legs is darker than the rest of the moth, 

 but not quite black. 



The cocoon is brown, with admixture of larval hairs, it is quite 

 soft. On cutting one open late in November, the moth, much 

 shrivelled, but not absolutely dried up, was near the opening. The 

 eggs, being quite loose, fell out at once, leaving the cocoon filled with 

 a light brownish wool, which a mere breath of air at once diminishes 

 much in quantity. 



One cocoon contained about 130,another ITOeggs. Theseeggs (pl.i., 

 figs. 3-1) are very large, and look as if made of white porcelain. They are 

 a little flattened, especially at the base. Their diameter is l-7mm., and 

 height l-2mm. Taking the egg of (>. antiqna for comparison, that of (J. 

 splendida is more than twice the diameter, viz., l-7mm. against 0-8mm. 

 That of 0. antiqna (pi. i., figs. 5-6), however, is of a height equal to its 

 width, notwithstanding the cup-like flattening of the micropylararea, so 

 that the egg oiO. splcndida isonly halfas high again as thatof <>. antiqna, 

 viz., l'2mm. against 0-8mm. The micropylar rosette is 0-03mm. in 

 diameter, surrounded by an area 0-4mm. in diameter, in which the 

 cells of the surface netting are very small, viz., O-OlTmm. in diameter, 

 outside this they are about 0-03mm. The network is not very 

 strongly marked, and the lines little raised, more so within the micro- 

 pylar area than outside. At this date the greater number of the eggs 

 are unchanged, containing only yolk material like those of (>. antiqna, 

 but one or two having a darker appearance were found to contain a 

 mature, but dead caterpillar. 



The dorsal area of the abdominal segments of the young larva is 

 fully occupied by tubercles i, ii, and iii, ii being very large, and 

 encircling i posteriorly ; iii rounded ; i and iii with about twelve long 

 hairs, ii with about twenty. The prolegs have two very long crochets 

 marking each end of the semicircle of hooks, the intermediate ones very 

 minute and hardly developed. On the 2nd and 3rd thoracic segments 

 the tubercles are in one transverse row, of which ii is the largest, each 

 with many hairs. On the 1st thoracic there is a row of tubercles in 

 front and a thoracic plate behind them. 



Explanation of Plate I.* 

 Diagrammatic notes from camera sketches : 



1. Anterior extremity (front view) of pupa of Orfin'ia iiplciidida ? , showing eyes 

 and antennse, mouth-parts apparently arranged as four successive segments, and 

 thoracic legs. No trace of wings x 11. 



2. Legs of 0. splendida ? , magnified x 24. h. Eight first leg. c. Right 

 intermediate leg. a. Left posterior leg. The differences are due more to aspect 

 than to structure. 



3-G. Eggs of O. i^plendida and O. antiqna to show relative form and size : 



3. Egg of O. splendida from above x 15. 



4. Egg of O. splendida from side x 15. 



5. Egg of O. antiqna from above X 15. 



6. Egg of U. antiqna from side > 15. 



* PI. i. published with the .January number is hereljy i-ancelled, owing to inac- 

 curacies in the drawing. That published with the current (Feb.) number is the 

 one to which reference should be made. 



