PIOEINIA FIORTNIJJ. 135 



but it is always highest in the centre, and has flat 

 sloping sides. Colour varying from orange yellow to 

 orange brown, with a darker central area. The fore- 

 going applies chiefly to the second moulted skin 

 (exuviae) of the female, which completely envelops 

 the adult insect, and forms the entire puparium, with 

 the exception of a very thin secretionary covering, 

 which extends slightly beyond the chitinous portion. 

 The pale yellow larval exuvias extend considerably 

 beyond the anterior extremity. Ventral sldn very thin, 

 and when removed exposes the female and her eggs 

 (PL XXIX, fig. 2). 



Long. 1 1*25 mm. 



Adult female (PL XXIX, fig. 3) at first elongate, 

 bat during gestation the abdominal segments contract 

 and overlap the base of the pygidium. Colour dull 

 orange yellow; segments during gestation orange or 

 dark crimson ; marginal area thin and paler than the 

 rest; eye spots black. Rudimentary antennae (PL 

 XXIX, fig. 4) placed closely together on the extreme 

 margin, in a slight hollow or emargination ; are com- 

 posed of a strong, central, straight, bidentate spine ; 

 and a single, outer, curved, slender bristle. Pygidium 

 (PL XXIX, fig. 6) with five groups of circumgenital 

 glands, of which the three anterior groups are confluent, 

 and consist of from twenty-five to thirty ; and the 

 posterior laterals, each of from twelve to seventeen, 

 are arranged in an irregular double row. Dorsal 

 tubular spinnerets wanting ; but there are three con- 

 spicuous marginal spinnerets with long broad spine- 

 like projecting pores ; the first is between the median 

 and second lobes; the second between the third and 

 fourth plate; and the third towards the middle. 

 Sometimes there is a smaller additional spinneret near 

 the preceding segment. Plates, short and spine-like, 

 number about four on each side the median lobes. 

 Spines minute. Median lobes, widely divergent, are 

 regularly and finely serrate on the inner free margin ; 

 second and third pairs are close together, small, have 



