150 Mr. Poulton's notes in 1885 upon 



upon it. The whole dorsal band upon the three 

 thoracic segments is traversed by a narrow median 

 light-coloured line lying over the dorsal vessel. The 

 sides of the thoracic segments are also dark-coloured, 

 the tint spreading further upwards at the intervening 

 furrows, while in the prothorax the dark lateral tint 

 extends until it is continuous with that of the dorsal 

 patch, so that there is very little of the light ground 

 colour on this segment. This small amount of light 

 ground colour is chiefly on the dorsal aspect of the 

 segment, anterior and posterior to the brown patch, and 

 even over these limited areas it is interrupted by the 

 traces of the continuation of the dark band of the two 

 segments behind. There is also a small lightish patch 

 on the sides of the prothorax in one of the specimens, but 

 even this is clouded with darker markings. Hence nothing 

 could be more unlike than the arrangement of markings 

 on the thoracic segments of these two varieties. 



The face is also striped with two additional dark lines, 

 of which those on the same side are continuous inferiorly 

 and superiorly, but do not meet those of the opposite side 

 in a A- These are parallel with the margins of the dark 

 borders of the head also present in the yellow variety. 

 In one specimen the nearest line has fused with the 

 dark margin, except for a short section of its length 

 superiorly. The clypeus is also bordered by a fine dark 

 line. Again, the dark borders to the oblique stripes 

 pass backwards, and meet in a V at a point considerably 

 in front of the posterior boundary of each abdominal 

 segment from the first to the seventh inclusive, while 

 in the other variety the borders meet at the boundaries 

 themselves. Posterior to the apex, in the brown variety, 

 the dark borders again diverge in a smaller V> with its 

 apex directed forwards, and thus making an X with the 

 other V- Each side of the smaller V is prolonged 

 backwards to the intersegmental furrow, where it meets 

 with the oblique border behind that with which it is 

 continuous anteriorly. The series of seven X-like 

 marks which are thus seen upon the first seven abdomnial 

 segments is exceedingly characteristic, and quite unlike 

 the Vs of the yellow variety. The " eighth border " is 

 quite distinct, and forms the first Xj although it is 

 smaller than the others, while the seventh of these 

 markings is the least distinct. 



