BARBADOS-ANTIGUA REPORTS 17 
the one individual which retained them somites 6 to 8 are about equal to 
5 in length, but 9 and later ones are much shorter and have thinner walls. 
All of the somites attached to the anal somite have very thin walls but 
their absolute length seems to depend on the character of the preservation. 
Somites 1, 2 and 3 have on either side a row of stout hooks varying 
from 3 to 5 in number in the different somites. Dorsal and a little 
anterior to these hooks is in each somite a tuft of needle sete. On somite 
4 and later somites the place of the hooks is taken by a longer row of 
much smaller hooks and the dorsal seta-tuft is carried on a much more 
noticeable papilla. 
A hook from somite 3 is shown in figure 26. It has a yellow color, 
darker at the apex and is slightly bent. The sete of the dorsal tuft are 
very slender and sharp pointed, each with a noticeable wing on either 
side of the central axis, which does not continue to the tip of the seta. 
On the 4th and later somites the hooks are much smaller and of an 
entirely different form from those in the first 3. Compare figure 27 
with figure 26, where they are drawn to the same scale. Each of these 
smaller hooks has a swelling about midway of its shaft, a prominent sub- 
terminal tooth and a crest of four smaller teeth diminishing in size from 
the basal to the apical one. In the dorsal tuft of sete is a form which 
I did not find in the earlier somites. Each has a central straight shaft 
with paired lateral plates whose free margins are toothed. These plates 
diminish in size toward the apex of the seta and are not found at the 
extreme end. A detail of the shaft is shown in figure 28. Slender sete 
like those above described for somites 1 and 2 also occur in later somites. 
In posterior somites the sete and hooks are carried on much more 
prominent tori than anteriorly but the dorsal sete are exactly similar to 
those of the anterior region. The hooks (figure 29) have more teeth on 
the crest and there is beneath the subapical tooth a tuft of chitin which 
seems to be solid rather than in the form of fine hairs as is the case 
with anterior hooks. 
The anal funnel is deep and carries on its margin a row of about 22 
slender subequal cirrus-like processes. One of these is -bifid but this 
seems a difference of no significance. 
The type is in the Museum of the State University of Iowa. 
Family Terebellide 
EUPoLYMNIA Verrill 
Eupolymnia magnifica Webster 
Terebella magnifica, Webster, (1884), p. 324, pl. XI, figs. 58 to 60. 
These belong in the genus Eupolymnia as defined by Verrill. 
They are common in the West Indian region, and the speci- 
mens in this collection are much smaller than those I have col- 
lected in the Dry Tortugas. A dense row of pigment spots on 
the collar was not noted by Webster. 
Collected at Pillars of Hercules, English Harbor, Antigua; 
