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Show 308 DR. H. GADOW ON THE INTESTINAL [May 21, The four smaller excentric circles contain the plagio-, peri-, anti-, and isoccclous modifications of the orthoccelous type. Consequently the Passeres are mesogyrous, with besides anticce-lous formation. All the Columbae are periccelous ; some, or rather the majority, with a mesogyrous spiral. The names are placed in such a way as to show that similarity or relationship which is indicated by the intestinal arrangement. 03 '3 I a -***- •r o 3 2(3) 12+ 4 64- Loops. II. r, o r, o r, o r, o 3 4 4 4 5 4 3 4 3 4 3 6 r, cl r, cl l,cl I, cl I, 0 1,0 Spi 1, 0 Spi 1, 0 Spi 1, 0 1,0 I, c l,cl I, cl l,cl III. IV I, 0 I, o I, 0 lo I, 0 1,0 r, o I, cl l,cl r,cl ral r, cl ral r, cl rai r, cl r, o r, cl r. cl r, cl r. cl I, o l,o I, cl r, cl, r,cl, cl o o cl cl l,cl I, cl, l,cl l,cl or I, cl I, cl open duo- Several transverse loops besides the denum. Besides the duodenum with two short loops. Besides the duodenum with one large, open loop, which begins to form two secon dary ones. Besides the duodenum the mid-gut and the colon form each one enormous convolution of many folds. Second and third loop with terminal twist; both with the last placed transversely. Orthoccelous. Plagioccelous. Plagioccelous. Isoccelous. Periccelous. Periccelous. Meso'jyrons, cycloccelous. Periccelous. Mesogyrous. Periccelous. Mesogyrous. Amphiccelous 3 loops closed, straight and left-handed. Many orthoccelous, closed loops ; some of them with numerous irregular convolutions. 1A11 orthoccelous, closed and alternating. Orthoccelous, alternating closed lips; duodenum often turned far round to the left. Orthoccelous, closed, alter nating. the last |
