STUDIES ON EARTHWORMS. 297 
branches. 47. One of the two branches into which the dorsal trunk divides 
just behind the cerebral ganglion, and which passes round the pharynx into 
the ventral trunk. c.g. Cerebral ganglia. com. Commissural vessel from 
the dorsal to the ventral trunk. com'. Similar vessel, but here ampullated 
and called “lateral heart.” com. al. Vessel from commissural vessel to the 
cesophagus. com. spt. Vessel from commissural vessel to the septum and body 
wall. D. The dorsal trunk. dd. Doubled portion of the dorsal trunk. 
d. int. Vessel from the dorsal trunk to the intestine. d. spt, Vessel from the 
septum and body wall to the dorsal trunk. dsw. Heart-shaped swelling on 
the dorsal trunk. JZ. Longitudinal lateral trunk. 7. @. Vessel from the longi- 
tudinal lateral trunk to the esophagus. J. sp¢. Vessel from the longitudinal 
lateral trunk to the septum and body wall. /. Longitudinal vessel in the 
body wall: this is rather diagrammatic, and represents the network as well as 
other longitudinal vessels here. zw. g/. Branches which go to form a network 
on the wall of the intestinal gland. w. ph. Branches from the dorsal, ventral, 
and longitudinal lateral trunks which go to form a network on the wall of the 
pharynx. pd. v. Vessel in somite 111, from the dorsal trunk to the pharynx. 
pA. v. Similar vessel of somite 11 (these two go to form the network on the 
pharynx). spt. Vessel from pA. v. to the first septum. 
Fig 6.—Side view of the vascular system, the side of the body wall being 
supposed to have been removed. 47. One of the branches, into which the 
dorsal trunk divides just behind the cerebral ganglion, which passes down 
alongside the cerebral commissure to the ventral trunk. 4. w. Cut edge of the 
body wall. e.g. Cerebral ganglion. com. Commissural vessel. com!. “ Lateral 
hearts.” com. al. Vessel from the commissural vessel to the cesophagus. 
com. spt. Vessel from the commissural vessel to the septum. JD. Dorsal trunk. 
d. int. Vessel from the dorsal trunk to the wall of the intestine. d. spt. Vessel 
from septum and body wall to the dorsal trunk. JZ. Longitudinal lateral 
trunk. /. ai. Vessel from the longitudinal lateral trunk to the alimentary 
canal. J/. spt. Vessel from the longitudinal lateral trunk to the septum, &c. 
1. w. Vessels in the body wall. z.c. Ventral nerve-cord. x. com. Nerve 
commissure from the cerebral to the infra-pharyugeal ganglion. zw. gl. Vessels 
from the longitudinal lateral trunk going to form a network on the intestinal 
gland. zw. ph. Vessels from the longitudinal trunks going to form a network 
on the pharynx. ph. v. Vessel from the dorsal trunk, helping to form the 
network on the pharynx. pA. ve.’ Similar vessel in somite u. S. Septum, 
spt. Branch from pA. v. to the first septum. 7. Typhlosolar trunk. 7. ind. 
Vessel from the typhlosolar trunk to the intestinal wall. V. Ventral trunk. 
v, int. Vessels from the ventral trunk to intestinal wall. v. sp¢. Vessels from 
the ventral trunk to the septum and body wall. »v. ¢., v. ¢. Vessels from the 
ventral trunk to the seminal reservoirs. 
Fie. 7.—Problematic funnel-shaped organ attached to the anterior face of 
the posterior septum (s.) of somite x11, and labelled (x) in Fig. 4. (x 12.) 
