120 
Psyche 
[December 
c. On the hind wing of both Stalls and Lemmatophora, 
these hairs are distributed similarly, on the apical 
part of the costal cell, the stigmatic area, the wing 
tip, and in rows along the anterior longitudinal 
Figures 9-11. 
Figure 9A. Lemmatophora typa. Reconstructed cross section of pos- 
terior wing. Figure 9B. Sialis mohri. Cross section of posterior wing. 
Figure 10. Taeniopteryx sp. Ventral view of thorax fchowing presence of 
weak sternocoxal articulations. Figure 11. Sialis mohri. Ventrolateral view 
of thorax, showing sternocoxal articulations, structure of internal skeleton, 
and general resemblance to Taeniopteryx. 
