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Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: together, and it becomes a little wider proximally. The succeeding plates are at first quadrangular with well-rounded angles, and a little longer than wide; they then become pentagonal, with a truncated proximal angle, although they still remain somewhat longer than wide. The lateral brachial plates, fairly wide, each bear seven spines and sometimes eight at the basis of the arms. These spines are short, nearly equal and their length is next to that of the article; however, the dorsal spines grow slightly shorter down to the last ones. They are slightly flattened and their surface is rough. The lateral spines, and above all the second under spine, are often provided near the rounded end, with two very small diverging denticulations which give them a bihamuled appearance, but this structure is always little developed; sometimes the small denticulations appear on one side only. The single tentacular scale is thin but fairly long, conical, with an obtuse point; its length does not reach half the corresponding under brachial plate. Connections and differences.?A. diducta belongs to the group of the Amphiurse, s. str., which possess but one tentacular scale and have the under face of their disks bare. It differs from the forms of that group which, by the way, are few, in having numerous brachial spines, large and elongated radial shields and also a fairly long tentacular scale; I see no species to which it might be allied. AMPHIPBOLIS (-AMPHIURA; SQUAMATA (Delle Chiaje). See for bibliography: Koehler (09), p. 179. Silssbach and Breckner (11), p. 253. Koehler (13), p. 356. Albatross station 2645. Apr. 9, 1886. Lat. 25 46'30 N.; long. 80 02'W.; 157 fathoms; gn. s.; temp. 43.4 F. One little specimen. Key West, Florida. One little specimen. AMPHIPHOLIS (...
| ISBN-13 | 9780217733533 |
|---|---|
| ISBN-10 | 0217733530 |
| Weight | 0.73 Pounds |
| Dimensions | 9.00 x 6.00 x 0.51 In |
| List Price | $19.99 |
| Format | Paperback |
|---|---|
| Pages | 222 pages |
| Publisher | |
| Published On | 2009-08-01 |
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