. Smithsonian miscellaneous collections. on the pleurites as illustrated infigures 20, 4. The purpose of these armatures is doubtful. The in-tersegmental membranes are colorless without any markings. Heavilychitinized bands are situated near the posterior margin of plates two 42 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 82 to six. These bands or ridges resemble the parapsides of the meta-thorax both in structure and in position. Punctures are numerous inall the plates and the lateral limitations are always irregular. Theseventh and eighth tergites in the males and the seventh in the femalesar
. Smithsonian miscellaneous collections. on the pleurites as illustrated infigures 20, 4. The purpose of these armatures is doubtful. The in-tersegmental membranes are colorless without any markings. Heavilychitinized bands are situated near the posterior margin of plates two 42 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 82 to six. These bands or ridges resemble the parapsides of the meta-thorax both in structure and in position. Punctures are numerous inall the plates and the lateral limitations are always irregular. Theseventh and eighth tergites in the males and the seventh in the femalesare heavily chitinized and lack the above mentioned armature buthave numerous hairs and punctures. Lateral plates or pleurites.—The pleural suture seems to be theline which divides the heavily chitinized hypopleurites from the mem-branous epipleurites. The pleural suture is not visible in the seventhand eighth pleurites because the epipleurite is heavily chitinized hereand completely fused with the tergite. The second hypopleurite which. ^^^^m
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Keywords: ., bookauthorsm, bookcentury1800, bookdecade1860, booksubjectscience
