168 Tr ansae tions . — Zoo logy . 



Adult male similar to the female in colour and in general 

 form. Genitalia consisting of a rather long bilobed genital 

 plate, the lobes dilated posteriorly, the apex bluntly conical, 

 the hairs on the lobes rather long ; posterior processes cylin- 

 drical, without hooks, nearly two-thirds as long as the genital 

 plate. 



Pupa as a rule stationary, but capable of moving at will. 

 In its earlier state, just after leaving the larval exuviae, it is 

 flat, elliptical, light-brown. In the later state the general 

 outline is elliptical, the rudimentary wing-covers clearly dis- 

 tinct ; form very convex above, flat or concave beneath. 

 Colour of the dorsal surface a rich dark-brown, the edges 

 yellowish ; wing-covers light-brown ; on the thorax are eight 

 small yellow tubercular swellings : all round the margin is a 

 very short, white, delicate fringe. Viewed veutrally the pupa 

 is greenish, the legs and antennjB yellow. The abdominal 

 region of the pupa-case is clearly divided from the thorax, and 

 on the cephalic region is a trapezoidal plate slightly raised 

 posteriorly. Antennae of pupa with six joints — the first five 

 subequal (the third the shortest) ; the last joint much longer, 

 fusiform, bearing at the end two unequal spines. Legs thick ; 

 second joint of the tarsus very small ; claw, pulvillus, and tarsal 

 seta as in T. peUucida. Anal ring elongate, ends rounded, not 

 very acute, slightly recurved. The marginal fringe consists 

 of very minute cups set closely together, from w^hich spring 

 very short glassy sub-cylindrical tubes. Length of pupa-case 

 varying with age : at the latest stage about xV^^- 



Larva active ; general colour dai'k-brown, the abdomen 

 banded transversely with yellow, and the thorax exhibiting a 

 number (six to eight) of yellow tubercles as in the pupa. 

 Length about ^^in. Antennae of four joints, rather thick. 

 Margin bearing a very short fringe. Epidermis exhibiting a 

 very large number of minute oval pores, and several groups of 

 curly setae. 



The larval skin very often remains attached, like a tail, to 

 the pupa after the latter has emerged. 



When the adult is being hatched from the pupa a trans- 

 lucent watery fluid escapes on the leaf. 



Hah. In New Zealand, on Panax, sp. var., Pseudopanax 

 fcrox (lancewood), &c. 



This is clearly, from the wing- venation and the colours and 

 forms of the larvae and pupae, a distinct species. It is larger 

 than T. pellucida, and in all its stages is an extremely pretty 

 insect. 



