English: Title: The Cambridge natural history

Identifier: cu31924024535464 Year: 1895 (1890s) Authors: Harmer, S. F. (Sidney Frederic), Sir, 1862- ed; Shipley, A. E. (Arthur Everett), Sir, 1861-1927. ed Subjects: Zoology Publisher: [London, Macmillan and Co. , Limited; New York, The Macmillan Company Contributing Library: Cornell University Library Digitizing Sponsor: MSN

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Text Appearing Before Image: CHAPTEE XVII AKACHNIDA EMEOLOBRANCHIATA {gONTINUMD) PODOGONA PHALANGIDEA = OPILIONES HABITS STKUCTUKE CLASSIFI- CATION Order VII. Podogona (Ricinulei). Tracheate Arachnids ivith two-jointed chelate chelicerae and prehensile pedipalpi. a copulatory organ. The tarsus of the third leg of the male hears In 1838 Guerin-Meneville^ described an Arachnid from West Africa which he named Gryptostemma luestermannii. At rare intervals occasional specimens of allied forms have been taken in the same region until six species of Cryptostemma have been established. In South America, also, two unique ex- amples of very similar creatures are the only known representa- tives of the two species of the allied genus Cryptocellus. All the examples hitherto found are of fair size (between ^ inch and ^ inch in length), and bear some general, though superficial, resem- blance to the Trogulidae, which has led to their being placed among the Phalangidea by almost all the Arachnologists who have noticed them. Their claim to this systematic position, however, is extremely doubtful, and Hansen and Sorensen, who have had the opportunity of studying the group much more minutely ^ 'Mevue Zoologique par la Sociiti Ouvierienne, p. 10. 439

Text Appearing After Image: Fig. 228.—Oiyj^toceUus simonis, x 4. (After Hansen and Sorensen.)

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