1896. ] FROM THE SANDWICH ISLANDS, 207 
There are no genital papille. 
The first distinct septum separates segment iv. from v. This 
and the three following—in fact all the septa which lie in front of 
the gizzard—are strengthened not only by an increased thickness, 
but by muscular strands which bind septum to septum and to the 
body-wall. Following the gizzard are four thickened septa, of 
which the last bounds the thirteenth segment posteriorly ; here 
also are a few muscular threads passing between the septa and 
from them to the body-walls. These threads are found as far 
back as the septum lying between xv. and xvi. As is so often the 
case, these bands arise from one segment and traverse another to 
be attached to the septum behind it or to the body-wall between. 
The direction of the muscular strands is outwards. Two particu- 
larly strong muscular bands—one on either side and latero-dorsal in 
position—attach the gizzard to the septum next following. 
The gizzard is round in form—neither particularly elongated 
nor bell-shaped. 
The intestine begins suddenly in the xvth segment; the ceca 
are simple and conical in form, extending through three segments. 
The last heart is in segment xiii. 
The large sperm-sacs are as usual in the xith and xiith segments. 
The spermiducal glands are large and loosish in texture, owing 
to their extensive lobulation. They extend through segments xvii. 
to xxi. inclusive. The duct is moderately long and bent into a 
curved horseshoe. 
The spermathece are four pairs lying in segments vi.—ix.; the 
point itself is oval, with a tendency to be pointed at the tip; the 
duct is short. The diverticulum is longer than the pouch and 
moniliform distally. 
There are egg-sacs in segments xiii.—xiv. 
Hab. Trinidad. 
§ The Distribution of Pericheta. 
Except for accidental transference to this country and to other 
temperate climates, the genus Pericheta is purely tropical in its 
range, and is practically confined to the Oriental region and to the 
Neotropical; from the former it reaches the Australian part of the 
Eastern Archipelago and the continent of Australia itself. Africa 
has no true Pericheta, except P. capensis, which is also Oriental. 
In all parts of the Oriental region Pericheta is a dominant form, and 
always constitutes a large proportion of the gatherings of worms 
from such localities. It is also exceedingly abundant in some of 
of the West Indian Islands, such as Trinidad, Bahamas, Grenada, 
Jamaica, Bermudas, and Barbados. It occurs more rarely upon 
the South American Continent. The following species are already 
known to occur in both the Old and the New Worlds :—P. indica, 
P. sumatrana, P. houlleti, P. dyeri, and P. posthuma. Peculiar to 
the New World, so far as published records go, are P. sancti jacobi, 
P. ringeana, P, elongata, P. pallida, P. bermudensis, P. barbadensis, 
