154 DTASPIS BOISDTTVALTT. 



number as shown in the accompanying formula taken 

 from thirteen individuals : 



11 10 8 11 12 



2024 2122 1414 2117 2018 

 1717 16-16 1314 1614 1415 



8 13 18 4 11 



1212 2524 16-22 1916 22 6 

 9_H 1416 1717 1617 1616 



12 9 8 4 



2122 24-25 19 ^ 



1817 2017 714 



Dorsal tubular spinnerets short ; those at the margin 

 and four near the median line much the largest. Va- 

 ginal opening opposite space between the glands. 

 Anal orifice just below the posterior groups. Median 

 lobes (PL XVIII, fig. 2) large, widely divergent, their 

 outer lateral margins attached to the body, inner 

 margin free and finely serrate ; second and third pairs 

 very short, each divided and separated towards the 

 centre, the anterior portion usually the largest ; fourth 

 pair quite rudimentary, or entirely wanting. A long 

 plate immediately follows the first three pairs of 

 lobes, and beyond them 5 7 others, equidistant, but 

 shorter and broader. Immediately following the first 

 three plates is a large projecting tubular spinneret 

 (pore) ; and a fourth about the middle of the margin. 

 Spines short, median pair longest. The female may 

 be readily distinguished by the large thoracic tubercle. 



Puparium of the male, strongly tricarinate, has a 

 varying quantity of curly, woolly filaments arising from 

 the thick felted material. When the individuals are 

 crowded together, as is frequently the case, the fila- 

 ments increase greatly and form a continuous patch of 

 secretion completely obscuring the true character of 

 the puparia. 



