. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 79. Figures 68-79. Staphylinoidea, Hydrophiloidea, Histeroidea. Scarabaeoidea. 68. Ochthebius sp. 69. Limne- bius piceus. 70. Hydraena pennsylvanica. 71. Spercheus sp. 72. Georhyssus californicus. 73. Epimetopus costatus. 74. Enochrus pygmaeus. 75. Helophorous sp. 76. Sphaerites politus. 77. Syntelia mexicana. 78. Hister sulcatus. 79. Pleocoma sp. below the antennal cavities to the posterior slightly inclined, suture difficult to see in margin of the notum. Limnebius. Cryptosternum variable, solidly Notal projection p
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 79. Figures 68-79. Staphylinoidea, Hydrophiloidea, Histeroidea. Scarabaeoidea. 68. Ochthebius sp. 69. Limne- bius piceus. 70. Hydraena pennsylvanica. 71. Spercheus sp. 72. Georhyssus californicus. 73. Epimetopus costatus. 74. Enochrus pygmaeus. 75. Helophorous sp. 76. Sphaerites politus. 77. Syntelia mexicana. 78. Hister sulcatus. 79. Pleocoma sp. below the antennal cavities to the posterior slightly inclined, suture difficult to see in margin of the notum. Limnebius. Cryptosternum variable, solidly Notal projection present, not connected fused to notum producing dorsal closure of with sternum only in Ochthebius (Fig. 68). coxal cavities in Limnebius (Fig. 69). In Rigid notosternal joint, horizontal to Hydraena (Fig. 70) the sternal projection. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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