128 



CALIFORNIA ACADEMY OF SCIENCES [Peoc. 4th Ser. 



Fig, 1. Male genital hooks of the species of Orthotylus, as 

 viewed from a point vertical to the plane of the hook. 



1, Orthotylus insignis ; 2, tibialis ; 3, ferox ; 4, viridicatus ; 5, coagulatus ; 

 6, flavosparsus ; 7, chlorionis ; 8, fraternus ; 9, nniformis ; 10, translucens ; 

 11, ovatus; 12, catulus; 13, languidus; 14, modestus ; 15, dorsalis ; 16, mar- 

 ginatus; 17, moUiculus ; 18, af finis; 19, brunneus; 20, puUatus; 21, crucia- 

 tus; 22, lateralis; 23, cuneatus. 



