182 JOURNAL OF ENTOMOLOGY AND ZOOLOGY 



dusky throughout except the base of article III, which is amber. 

 The length of the articles of the right member are : I, 0.08 mm.; 

 IL 0.09 mm.; Ill, 0.34 mm.; IV, 0.16 mm.; V, 0.2 mm.; VI, 0.17 

 mm.; total, 1.04 mm. When held bent in natural position the 

 length from the base to the tip, measuring straight across, is 0.98 

 mm. The length varies considerably with the individuals, as will 

 be seen by comparing the drawings (Fig. 3B), which are made to 

 the same scale, and by comparing the two members of the same 

 individual. The sensoria are few, but quite large and circular in 

 shape. They are distributed as follows: 



Article III Article IV Article V 



Right member 4 12 



Left member 4 2 2 



In nearly every case the sensoria are confined to the apical portion 

 of the articles — to the apical two-thirds or half of III and near the 

 tip of IV and V. There is considerable variation in both the num- 

 ber and location of the sensoria, as will be seen in Fig. 3B. The 

 tabulated results showing the number and position of sensoria in a 

 number of specimens are given below, as follows: 



Article Number of sensoria Number of articles 



III 1 1 



2 11 



3 18 



4 13 



5 3 



6 1 



IV 1 17 



2 29 



In no case was article V noted with more or less than two. They 

 are sometimes located slightly different and often one is larger, but 

 the number is constant. All the articles are clothed with long hairs. 

 Pro thorax: Very short and scarcely wider than the head, nearly 

 black above and dark amber on the sides and ventral surface. 

 Meso thorax and Metathorax: Muscle-lobes black, sides dark am- 

 ber, ventral surface black except immediately around the coxas. 



