288 Transactions of the Society. 



Tottenham, where I have found it several times since, always in? 

 the month of July. 



The very clear, white, transparent body is very narrow and 

 elongate, with a distinct waist in the middle, then tapering, and 

 terminating in a fairly long foot, bifurcate at the tip, which, how- 

 ever, does not seem to carry proper toes. The broadest part is the 

 head, which is rounded anteriorly, with a projecting, rounded 

 point at the extreme front, carrying two broad bundles of very 

 tine stiff setse. This frontal tuft of sense-hairs seems to have 

 been overlooked by Dr. Zacharias, as he makes a point of their 

 absence. The four frontal styles are present as usual, the outer 

 pair emerging from broad triangular fleshy flaps. The sheath of 

 the large styles can be followed for some distance inside the head to 

 a nervous base or ganglion cell, from which two nerve-threads are 

 seen running towards the brain, and a third thread backwards.. 

 On either side of the extreme front of the head, and slightly 

 towards the ventral side, are two hemispherical projections, one on 

 each side, which bear bundles of radiating, fairly long, and stiff 

 3ense-hairs. 



The ciliary wreath has the form usual in other Synchsetae, the- 

 two ventral cushions on each side of the mouth having excep- 

 tionally long and powerful vibratile cilia. The auricles are very 

 prominent, broad, rounded, and more or less pendent. 



The dorsal antenna is not very prominent, situated in its usual 

 position over the eye; the lateral antennae are low down in the 

 lumbar region and quite on the ventral side. 



The brain is large, consisting of a broad sac containing greyish 1 

 granular cells, and carries the spherical deep red eye. 



The mastax is very large, of the usual Synchreta pattern, but the 

 presence or absence of teeth in the unci has not been ascertained, 

 unfortunately. The oesophagus is a very long, contractile, thin- 

 walled tube, not ciliated internally, leading to a small thick-walled 

 stomach, the large cells of which often contain yellow oil-globules. 

 The gastric glands are rounded and small. The lateral canals are 

 distinct, ending at the height of the stomach in a convolution, to 

 which two or three flame-cells are attached. The contractile 

 vesicle, of fairly large size, is situated at the extreme base of the 

 body-cavity. The ovary is rather small for so large an animal,, 

 rounded, and containing eight to sixteen nucleated germ-cells. 

 By the side of the ovary a large egg is often seen, with large 

 nucleus and a number of small, deep yellow oil-globules. The 

 i >gg8 are not carried. 



The foot is long and stiff, and has but a single joint containing 

 two narrow elongated foot-glands ; at the end it bifurcates more or 

 less, but does not carry proper toes. 



The integument of the body is very thin, white, transparent, 

 very finely folded longitudinally on the dorsal side. 



