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Wisconsin Academy of Sciences, Arts, and Letters . 
EXPLANATION OP PLATE XXIII. 
Pig. 1, Sittacus Uphamii, abdomen of female X 8; la and lb, palpus; 
lc, epigynum. 
Fig. 2a, Hyllus perspicuus, abdomen of male X 4; 2b, abdomen of fe¬ 
male X 4; 2b, palpus. 
Fig. 3, Hyllus Treleavenii, female X 3; 3a, epigynum. 
Pig. 4, Hyllus natalii, abdomen of female X 4; 4a, epigynum. 
Fig. 5, Hyllus moestus, abdomen of female X 4; 5a, epigynum. 
Fig. 6, Mendoza Carlinii, male X 6; 6a, female X 4; 6b, palpus; 6c, 
epigynum. 
Figs. 7 and 7a, Phlegra imperiosa, two varieties of epigynum. 
