THE VICTORIAN NATURALIST. 25 



from which are very poisonous if they enter the flesh, measure 

 from 4^ to 5 inches. 



Opsirhina fervens. Walk. 



Egg. — Globular, slightly flattened on the side of attachment, 

 pale reddish brown in colour, mottled and streaked with dull 

 white. They are deposited singly, or in bunches of 3 or 4. 



Larva (full-grown). — Dull slate grey, covered throughout 

 with very short velvety pile, and mottled indistinctly here and 

 there with yellowish and black. Head very broad, of the same 

 width throughout, indented over the mouth parts, which are sur- 

 mounted by short bristly hairs directed forwards. The 2nd seg- 

 ment is as broad as the head, and from its base runs a double 

 black dorsal line, spreading out on each segment, and terminating 

 on the nth. Between the 3rd and 4th and the 4th and 5th are 

 black velvety folds, only visible when the larva is in motion ; 

 while from the base of 4 is a pair of long filamentary processes, 

 directed forward, and about 4 mm. in length. On n, directed 

 posteriorly is a large triangular flap raised above the segment, 

 and giving the idea of the blunt caudal appendage of a Sphinx. 

 There is a lateral narrow black line above the spiracles, and from 

 3rd to nth inclusive the segments are developed in large corru- 

 gated folds. The anal clasps are very wide, and are obtusely 

 angular in form. At the base of all the legs are bunches of short 

 grey hairs. The under side is dull chestnut brown, feet and 

 legs of the same colour. Length, 47 mm. 



Pupa. — Pitchy black, rounded before and behind, thorax and 

 wing-covers with waved striae. Abdomen deeply punctate, each 

 puncture bearing a fine short bristle, those on the terminal seg- 

 ments being extremely thick, and giving a very rough surface. 

 Length, 30 mm. ; width, 12 mm. 



Cocoon. — Very closely spun, the inner part of tough white silk 

 fibre, outer layer dull drab, loosely placed, and generally with 

 fragments of leaves and twigs intermixed. Length, 40 mm. ; 

 width, 20 mm. 



Is not Pinara divisa (Walk.) = this species? 



Thyridoptertx herrichii. Westwood. 



Larva (full-grownV — Head and 2nd segment sordid white, the 

 markings on the head being very faintly traced, the ornamenta- 

 tion consisting of waved lines and spots of a very pale brown ; 

 2nd segment with broader and stronger lines of brown arranged 

 longitudinally ; 3rd segment brown, with 4 pale longitudinal lines. 

 Rest of the body pitchy, as are also the feet and legs. The case 

 is of fine silk, closely compacted, biconical in shape, and with 6 

 longitudinal raised ridges. Fragments of bark and leaves are 

 attached to the lower extremitv. 



