. Economic entomology . Otonyssus sticholasius. Copied from Ditto, copied from Maddox. of it is that his species has four transverse rows of four or five bristles each on its back. In this it agrees with the species of Dr. Maddox. They differ however slightly in colour, that of the latter being brown while Kolenati's is deep cherry red, which may probably be due to the difference in freshness or degree of digestion of the contained food. On the pipistrel—Austria. Scotland. Kolenati describes five other species of Otonyssus from the ears of different bats. Genus Peplonyssus {Kolen. Si

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. Economic entomology . Otonyssus sticholasius. Copied from Ditto, copied from Maddox. of it is that his species has four transverse rows of four or five bristles each on its back. In this it agrees with the species of Dr. Maddox. They differ however slightly in colour, that of the latter being brown while Kolenati's is deep cherry red, which may probably be due to the difference in freshness or degree of digestion of the contained food. On the pipistrel—Austria. Scotland. Kolenati describes five other species of Otonyssus from the ears of different bats. Genus Peplonyssus {Kolen. Sitz. Akad. Wiss. Wien, 1858, p. 74). This is a genus nearly allied to the preceding and which has been styled the top shaped mites by Kolenati. He says that the legs are eight-jointed, which we presume must be an error because of its obvious affinity to the preceding, and from his description of the legs and claws being the same as of its allies, but we have X 2

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