1913] Variation in the Genus Liicilia. 249 



The sternopleural bristles were represented in all cases but 

 one by the normal three pairs. In this one exception the 

 anterior bristle on one side was reduced to a long hair. It was 

 the anterior bristle that became modified. 



The ocellar bristles, as in the other two species, afforded 

 secondary sexual characters. 



.The males had in all cases the one strong proclinate pair 

 as in L. sericata and L. sylvarum, having insertion within the 

 ocellar triangle. The females had the usual one strong pair 

 having insertion within the ocellar triangle. The posterior 

 pair were in most cases reduced to hairs, thus being less strong 

 even than in L. sylvarum. There, was one curious variation 

 in which there were one strong pair and two very weak pairs 

 of bristles; both these weak pairs were posterior to the strong 

 anterior pair; one of them was inserted within and the other 

 outside of the ocellar triangle. There were in addition to the 

 bristles a number of hairs both within and outside of the 

 triangle. 



The color of the palpi was, in the specimens of this species 

 examined, very constant. It was without exception amber 

 yellow. 



The width of front here again afforded a secondary sex- 

 ual character. All the males had the front linear; it was 

 considerably narrower than in L. sylvarum, and very con- 

 siderably narrower than in L. sericata. In the females the 

 width of front varied from three tenths to one third head 

 width; the more general condition however was about three 

 tenths, or the same as in L. sylvarum. 



The color of the dorsum of the first abdominal segment 

 varied from that of the remaining segments (abdomen unicolor- 

 ous) to black. Between these two extremes there were numer- 

 ous gradational variations; the most common of these was 

 that in which the segment was somewhat darker, especially 

 centrally, than the remaining segments. 



As to the color of the tegulae there were found to exist 

 the same variations as in L. sylvarum and L. caesar. The 

 extremes were white and brown and between these were found 

 numerous combinations. The more common condition was 

 that of 'tinged brown.' 



Regarding the last character, namely, the comparison in 

 lengths of the apex of the first posterior cell and anterior cross 



