187 



The length of the anchors in the specimens from Bermuda (Fig. 

 24. 2-3) varies from ca. 145 fi to 220 [i, and may within a single 

 specimen vary up to 35 ^. The width increases with the length 

 and is ca. 60 ° 0 of it. The anchor-plates (Fig. 23. 4-5) measure 

 ca. 80 % of the corresponding anchors, and their width is ca. 75 

 % of their length. The small anchors from the posterior end 

 measure 130 — 140 // in length. The anchors and plates in the 

 specimens from Tobago do not vary so much. The anchors (Fig. 

 23. 10-11) measure ca. 150 fi in length and 80 fi in width, and 

 the plates (Fig. 23. 9 & 12) measure ca. 120 fx in length and 90 // in 

 width. The small anchor^ are 90 ^ x 50 [a,. All the anchors have 

 the stock finely dented and have minute knobs on the vertex. The 

 knobs on the vertex are not as in most of the oriental species 

 arranged into one or two small groups, but in a single row. The 

 anchors of Bermuda specimens have up to 20 knobs, and those 

 from Tobago have not more than 3 — 6. The anchor-plates in the 

 two groups of specimens differ somewhat in shape (Fig. 23. 4-5, 

 9 & 12), but the bridge is always more or less uneven and the 

 anterior margin of the articular hole is usually serrate. In the 

 posterior end of the plates there are usually three holes, but the 

 large plates of the Bermuda specimens have four. 



The miliary granules (Fig. 24. 10-11) are rosettes. In the 

 specimens from Jamaica the rosettes are more or less irregularly 

 shaped, but as the calcareous deposits in these specimens are 

 distinctly attacked by acid in the preserving fluid, the irregular 

 shape probably is due to dissolution. The rosettes in the specimens 

 from Bermuda are a little larger than those in the specimens from 

 Tobago. 



In the tentacles and in the digits rods are often present. These 

 are more or less slender, rather uneven and often a little branched 

 (Fig. 23. 7-8). They measure in the tentacles ca. 100 — 120 ^ and 

 in the digits 50 — -80 fi. Such rods are not always present, and 

 their number may be exceedingly different, and does not correspond 

 with the size of the specimens. Often rods are wanting in some 

 tentacles, though a rather large number are present in others of 

 the same specimen. 



From the above description it appears that though the specimens 

 from Tobago in many characters differ from those from Bermuda, 



