. Occasional papers of the California Academy of Sciences. e pronotum delimit flap-like flanges on either side. These invaginate posteri-orly to form two wide-mouthed, pleural apophysealpits, the apophyses of which are stout, conical anddirected caudad at a 45° angle. Submedially, a smallventral lobe is produced against which the base ofthe second cervical sclerite aiticulates. Behind thisprojection a suture extends to the mouth of the apo-physeal pit and defines the catepisternite as a dis-tinct sclerite somewhat as in Plecoptera. This scleriteis slightly convex and produced ventrad in the po
. Occasional papers of the California Academy of Sciences. e pronotum delimit flap-like flanges on either side. These invaginate posteri-orly to form two wide-mouthed, pleural apophysealpits, the apophyses of which are stout, conical anddirected caudad at a 45° angle. Submedially, a smallventral lobe is produced against which the base ofthe second cervical sclerite aiticulates. Behind thisprojection a suture extends to the mouth of the apo-physeal pit and defines the catepisternite as a dis-tinct sclerite somewhat as in Plecoptera. This scleriteis slightly convex and produced ventrad in the poste-rior half to form the dorsal coxal articulation. Thetrochantin is dorsally separated from the catepister-nite by a transverse suture. The prothoracic steiTium (Fig. 12B) is a broad,quadrate plate, the posterior angles of which are pro-duced as short truncate processes. Narrow, lateralareas separated by sutures may be subcoxal elementsfused to the prostemum. Slit-like openings of the 16 OCCASIONAL PAPERS OF THE CALIFORNIA ACADEMY OF SCIENCES, NO. 149. sternalapophysis B pronotal flangecatepisternite pronotum pleural apaphysis
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectscience, bookyear1890
