416 Friend: New Records for British Annelids. 
5. Henlea perpusilla Friend, was described in this journal 
in September (see page 320). 
6. Trigaster minima Friend. 
Some earth received by me from Kew, in May, which had 
come from Peru, contained two immature Perichaetidae, and 
a new Enchytraeid. When I had kept the earth several weeks 
I found another annelid which seems to represent a species new 
to science. Beddard’s Monograph contains the following 
account of Benham’s genus Trigaster :—‘ Definition: Setae 
strictly paired, Clitellum extensive, XIII.-XL. Three gizzards 
in VII.-IX. ; calciferous glands absent ; Nephridia diffuse; a 
mucous gland present ; penial setae absent. This genus only 
contains one species.’ The type came from the West Indies, 
and was fully described by Benham, who notes that the pros- 
tomium is not imbedded in the buccal segment or peristomium, 
that the intestine begins in the thirteenth segment, and that 
the spermathecae are without any apparent diverticula. In 
Das Tierreich Michaelsen gives five species, but the remaining 
four have only 2 gizzards, and Trigaster lankestert Ben. remains 
alone with three. This species is, however, subdivided into 
three subspecies, on account of the differences in the setae and 
other details. In the type the gizzards are in segments 7, 8, 9 ; 
in intermedia and calwoodi they occupy segments 5, 6, 7. 
The position of the gizzards is a point of great importance, 
as is also that of the hearts and the commencement of the 
intestine. In these particulars the species now under con- 
sideration varies widely from Benham’s type, as will be seen 
from the following details. 
Trigastey sp. nov. Immature. Number of segments, 
50; length, 15 mm.; breadth, I mm.; prostomium very 
delicate, and capable of being drawn into the buccal cavity and 
everted. The movements of the worm remind one of a planarian 
rather than of an oligochaet. The setae are paired, and differ 
somewhat in length and size in the ventral and dorsal bundles. 
The dorsal vessel is attended by dark chloragogen cells, and 
there are four or more pulsating hearts between the gizzards 
and the intestine, the strongest being in segments 12-15. The 
intestine begins in 19, and the gizzards lie in 9, 10, 11. The 
segments in front of the gizzards are richly supplied with 
blood vessels, which ramify in all directions. A commissure 
is found in each segment behind the 19th. There is a striking 
difference between the fore and hinder parts of the intestine. 
From its commencement backwards to the 30th segment it is 
of large size; it then contracts, and from about the 33rd to 
the end, it is only one half the size. 
Unfortunately the immature condition of the specimen 
renders it impossible for me to give any information respecting 
the disposition and structure of the sexual organs. But the 
Naturalist 
