448 Dr. R. J. Tillyard on 



Thorax considerably broader than head ; iving-cases folded down 

 along the sides of the abdomen in the usual manner, but very long 

 for the size of the pupa ; their tips only appear to be slightly glued 

 together. Legs folded down ventrally along the abdomen; the 

 tibiae and tarsi of the hind legs, at any rate, if not of the other two 

 pairs, somewhat glued together. 



Abdomen slightly narrowed at base, broadly oval, well rounded 

 posteriorly. Segments 1-2 very short, 3-8 considerably longer, 

 each about four times as wide as long in the macerated specimen; 

 9-10 very short, ring-like, but quite distinct from one another 

 (Text-fig. 4). Anal opening clearly visible on the soft terminal 

 membrane beyond the chitinous ring of segment 10. In the narrow 

 zone of soft membrane forming the suture between segments 9 and 



Fig. 4.- — Sabalinca inconcjruella Walk. Pupal skin, macerated in 10 

 per cent. KOH. End of abdomen, shov.ing segments 8-10, the two 

 last appearing as narrow transverse bands ( x 40) : an, anus, cjf, sup- 

 posed indication of vestigial gonopore, sjp, spiracles of segment 8. 



10 there is a very slight appearance of a pale mid-ventral circular 

 area with somewhat darkened circumference, which might indicate 

 the position of a vestigial gonopore ; but I cannot be certain of this. 

 The imago which emerged from this pupal skin was a female. There- 

 fore, if this appearance really represents the position of an original 

 genital orifice, it would indicate that the present terminal position 

 of the genital opening in the females of MicrojDterygidae is a secondary 

 specialisation, and of no account whatever as a character to be used 

 in an argument for forming a new Order for these insects. The 

 eight pairs of spiracles on segments 1-8 are all clearly visible. 



Phyhgevetic Conclusions from a Study of the Larva and 

 Pu])a. 



The form of the larva shows that the genus Sabatinca is 

 closely related to Micropferyx, as a study of the imago also 



