. Occasional papers of the California Academy of Sciences. HINDWING. B FlGI-iRE 25. A. Dark field illumination of wings of freshly killed Embki surcoufi Navas (Embiidae) showing tracheae(not visible in dead wings). B. Tracheation of teneral Avchembia batesi (McLachlan) (Embiidae). Photo also showsenlarged anal area of the wing occurring in some species of Archeiubia Ross. 30 OCCASIONAL PAPERS OF THE CALIFORNIA ACADEMY OF SCIENCES. NO. 149

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectscience, bookyear1890