116 



CAROLINE BURLING THOMPSON 



since the brain is similar to that of the female in figure 4 b, 

 and the sex organs are only slightly smaller than those of the 

 male shown in figure 5 a. 



The sex organs of the two varieties of the reproductive type 

 and those of the worker-soldier type, drawn from whole mounts 

 with an immersion lens, are shown in figures 28 to 32. Figure 

 30 represents a large ovary of the reproductive type. The 

 oviduct is a tube with a wide lumen into which the ovarian tubules 



ov. 



Fig. 4 Female nymphs of L. flavipes, with ten antennary segments, body 

 length 1.3 mm. A, reproductive type of the first form, with large brain and large 

 ovaries; b, reproductive type of the second form, with slightly smaller brain and 

 smaller ovaries; c, worker-soldier type, with very small ovaries; ov., ovary, 

 Oc. 6, obj. 16, reduced one half. 



open. The ovarian tubules are long and numerous, about seven 

 to eight on the outer side, and eleven to thirteen on the inner, 

 the proximal egg cells are large, the most distal ones very minute. 

 Mitotic figures occur in a number of the larger egg cells. I am 

 unable to make any statement in regard to the cytology of the 

 egg cells. Figure 31 represents a small ovary of the reproductive 

 type. The oviduct is small; the ovarian tubules are shorter and 

 more slender and, possibly, less numerous, although I think that 

 the number is about the same as in the larger ovary; the largest 

 egg cells are smaller than those in the large ovary. In the very 



