1874.1 219 



the eleventli to tlie anal extremity ; tlie thoracic segments deeply 

 wrinkled, tlie others pkimp and separated by well defined divisions ; 

 the ventral legs long and well developed, the anal pair long and 

 extended behind beyond the end of the body ; each segment with five 

 prominent wart-like tubercles on either side, forming through the 

 length of the body as many longitudinal rows ; the two upper rows 

 nearly close together along the sub-dorsal region, the others at equal 

 distances along the side, the lowest almost on the belly, all of them 

 thickly furnished with long radiating hairs curved a little upwards at 

 their tips. 



The head is black and lustrous, the ground colour of the back a 

 bright primrose-yellow, which appears but little on the second segment, 

 being there merely an edging and fine dorsal division to a blackish-grey 

 mark ; this yellow is a little more seen on the third and fourth 

 segments, where the large pairs of tubercles in front are black, the 

 smaller ones behind them bright orange, the space between these on 

 the fourth segment transversely barred with black, which more or less 

 tinges the dorsal stripe, and produces a conspicuous central triangular 

 or cruciform black spot ; the comjolex broad dorsal marking widens a 

 little (diamond-like) on the middle of each following segment, and is 

 composed of a fine broken grey outline, followed within by a line-like 

 interval of the yellow ground, and then with freckles of bluish-grey 

 edged with darker grey, and having a middle delicate thread-like 

 interval of the yellow ; near the sub-dorsal region, run double fine 

 broken lines of grey freckles, which on the front of the fourth segment 

 are absent, but only intei-rupted on each of the other segments as 

 they approach the bright orange tubercles placed in twos, i. e., a very 

 small roundish one in front, and a large one transversely oval just 

 behind it ;* besides the thoracic black tubercles mentioned, others 

 occur on the eighth, twelfth, and thirteenth segments, as follows : the 

 small front tubercles on the eighth are black, and the dorsal region 

 just there is also more or less black, together forming a conspicuous tri- 

 lobed spot ; on the twelfth is a greater suffusion of the black in which 

 both large and small tubercles are dyed ; the tubercles on the front of 

 the thirteenth segment are also black, the anal flap is dark brownish- 

 grey, blotched with blackish and sparingly freckled with yellow ; the 

 yellow ground of the back is very effectively relieved by the broad 

 sub-dorsal velvety black stripe, on which the larger orange tubercles 

 encroach ; it has a vexy broken thread of yellow dots along the middle, 



* In the female these tubercles were deep orange-red, and the dorsal markings more decidedly 

 of a diamoud shape on each segment. — W. B. 



