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American Midland Naturalist Monograph No. 3 



tubercles rarely separated by more than the diameter of one of the tubercles, 

 with sparse, minute feathering toward tips; outer clypeal hair (3) densely * 

 dichotomously branched, fan-shaped; postclypeal hair (4) small, branched; 

 frontal hairs (5-7) large, plumose; sutural (8) and trans-sutural (9) with 

 several branches. Antenna spinose; terminal hair (10) with several branches, 

 longer than the sabres; antennal tuft (11) inserted near basal third of shaft, 

 several-branched, reaching outer fourth. Thorax: Prothoracic dorsal submedian 



e, K AsroM 



Fig. 40. Larva of Anopheles Tvall^eri Theobald. A, Thorax and abdomen. 

 B, Pecten. C, Head. D, Leaflets of palmate hair. 



