100 



-this, which, when once established, is indeed a mill or flour scourge, as being an 

 - all-the-year-round pest." The full-grown caterpillar is a little more than half an 

 inch in length, of a greenish white or sometimes of a decidedly pinkish tinge. 

 The head is reddish -brown and bears a few long bristles. The thoracic and anal 

 shields as well as the thoracic feet are honey yellow. The spiracles are yellowish 

 and inconspicuous. Along the sides are four series of dark piliferous tubercles, 

 (i.) Sub-dorsal, consisting of an anterior and posterior tubercle on each segment 

 from 5 to 12. (ii.) Lateral, (iii.) Sub-stigmatal and (iv) supra-ventrai. The 

 sub-sfcigmatal series i& double throughout, i.e., each tubercle bears two bristles, 

 separated a little at the base. On segments 3, 4, and 13, the sub-dorsal and 

 lateral series are represented by a single large double tubercle instead of two 

 separate tubercles as on the other segments. These three tubercles are the most 

 conspicuous marks on the larvae. The lateral series consists of double tubercles 

 on segments 2, 3, 4, and 13, and ofjtwo bristles on the remaining segments, one of 

 these, above and slightly anterior to the spiracle, is very small. The tubercles are 

 small but distinct, the dark colouring is in the form of a cloud round the bases of 

 the bristles, which in the lateral series on segments 3 and 12 takes the form of a 

 black ring rcund the white base of the larger bristle and the smaller bristle is 

 placed on this ring. On the anterior section of segment 13 the two sub-dorsal 

 rows of tubercles are joined by a dark cloud and there is a large double con- 

 spicuous tubercle in the lateral area. 



Th", chrysalis is of the shape shown at figure b, § of an inch in length of a 

 lioney yellow colour. This stage lasts about three weeks in September. 



Prof. Riley has figured for comparison with E. kiikniella the native species 

 -of the same genus E. interpunctella shown at Fig. 50, with its larvae and chrysalis. 



This species was found associated with E. kiihneilla in the infested mill. The 

 moths are quite different in appearance, interpunctella having the bases of the 

 wing* of a yellowish drab tinge and the tips reddish mottled with purple. 



" The early states are quite similar in appearance, but the larvae may be dis- 

 tinguished by the following characters : the larvae of kiikniella are more slender 

 and of a more uniform diameter than those of the other species. The abdominal 

 legs are longer, cylindrical, with a circular fringe of hooklets at the crown. In 

 ■interpunctella the legs are short, conical, with the fringe of hooklets at the crown 

 oval. All piliferous warts in kiikniella, most of which are rather minute, are 

 still rather prominent, readily observed, and of a black or brown colour. Thoie 

 most conspicuous are the lateral ones, in front of the first spiracle ; the sub-dorsal 

 one each side of the meso-thorax, almost completely encircled by a narrow black 

 ring interrupted only at its upper margin, Fig, 50, d. In interpunctella all the 

 warts, while present, are coneolourous witn the rest of the body, and can be did- 



