126 TBE entomoi.ogist's RECOUI). 



segment and the tendency to a hump of the 12th. It no longer 

 sits in ? shape except occasionally when alarmed, it is wonder- 

 fully uniform in width and bulk from end to end, the front 

 few segments being only a little smaller, and behind, it tapers 

 only at the 13th segment. Each segment is full and cushiony, 

 and (except the head) each has the yellow lozenge on back, 

 so as clearly to demonstrate "not only the 13th but a 14th 

 segment. 



The yellow plates include both trapezoidals, of which the 

 anterior has a small black bristle, the posterior the clavate 

 hairs ; on each segment the yellow lozenge has a special out- 

 line, those of 5th to loth have rounded ends and front and 

 back edge parallel. On the nth it is square with a minute 

 notch at the side, on the 12th nearly square, on the 13th curved, 

 with the concavity forwards, and ends square, the 14th lunated 

 with only two short hairs ; on the second, it is broader but of 

 similar shape, on the third, the front edge is produced to a 

 blunt angle in the dorsal line, and, on the 4th, the same, but 

 with the addition of a corresponding notch behind. 



The yellow lozenges rise a little above the surface as if laid 

 on, on the 3rd and 4th they include the supra-spiracular 

 tubercle ; the anterior and posterior edges of each lozenge 

 paler, in a few specimens nearly white. Each lozenge has 

 sundry wrinkles disposed in relation to a deep groove that 

 crosses it transversely about the middle, and has several dark 

 spots or lines in its course. 



This groove, with its ends curving forwards and a shallow 

 depression in the dorsal line, mark the divisions between 

 the tubercles On the 3rd and 4th segments there are no 

 transverse grooves, the original disposition of the tubercles 

 being different, on each of them the six hairs of the original 

 tubercles exist but are very short, none being clavate, a sur- 

 vival of the circumstance of these being originally pale seg- 

 ments. Similarly, 11 has no clavate hair, is lower dorsally 

 than the other segments, the anterior trapezoidal has a very 

 minute hair, and that of the posterior trapezoidal is only as 

 large as that of the anterior trapezoidals of the other segments. 

 Segment 2 has two clavate hairs, which always lie closely 

 together at their ends, this segment still has a double row of 

 tubercular hairs, and illustrates that this segment is, dorsally, 

 an equivalent for two segments, what the second equivalent is 

 ventrally is not so plain ; it appears to have a pair of prolegs 

 like 3 or 4, whether the appendages of the other half of this 



