188 A. E. Verrilli—The Bermuda Islands; Geology. 
Millepora alcicornis Linn. Figure 36. Pl. xxx 4, fig. 1. 
Fragments of the fragile branches are rather common in the beach 
deposits. It is now one of the most abundant reef corals. 
Echinoderms. 
Melitta testudinata (Klein)=Scutella quinqueforis Nelson. 
This five-holed sand-dollar was recorded by Nelson from Ireland 
Island and the islands in Crow Lane, Hamilton. It has not been 
observed here by others, either living or fossil. The six-holed 
species (UZ. seaforis) is common, however. Possibly Nelson con- 
founded the two species. Both are common on the sandy coasts of 
the Carolinas and Florida. 
Foraminifera. 
In some of the finer layers of beach-rock, near Hungry Bay, 
foraminifera of many species were common, but mostly too much 
worn to admit of specific determination. 
64 64a 646 
Figure 64.—Orbitolites marginalis, x 10; 64a, ‘the same, profile and section; 640, 
O. duplex, x6. Both after Brady. 
Among those recognized were Orbiculina adunca (see p. 140, fig. 
35, 12); Orbitolites marginalis, fig. 64; O. duplex, fig. 646; Cornu- 
spira foliacea (fig. 35,13); Miliolina seminulum (fig. 35, 8); Bélocu- 
lina ringens (fig. 35, 9); Textularia concava (fig. 35, 5); Peneroplis 
(fig. 35, 16). But many other species were present. 
Fragments of the common red sessile foraminifer (Polytrema 
miniaceum), which grows firmly attached to the under sides of dead 
corals and stones in warty and branched forms, are not uncommon. 
This is probably what Nelson referred to as a red Millepora. (See 
