454 W. BLAXLAND BENHAM. 
The following septa are inserted behind every successive ring 
in the normal manner. My diagram shows the position of 
these septa in relation to rings and to segments. 
In Rosa’s species the strong septa are seven in number, and 
are fixed at the segments v/vi to x1/x11, corresponding to 
those in the present species labelled 6 to h. 
In K. madagascariensis, too, the septa 6—h (Michael- 
sen’s septa ii to viii) agree with those in mine, but the most 
anterior one, which should correspond with a, is placed between 
rings 7/8, 
In K. longus (if we make the allowance suggested by 
Michaelsen himself, that he counted a portion of the everted 
buccal region as the first ring, and therefore subtract one from 
all his numbers) there is a perfect agreement with mine. 
We may, then, use these strong septa as characteristic of the 
genus. Both in number and position, seven of them agree 
in four of the known species.t 
The alimentary canal is provided with a gizzard lying in 
segment iv, thence the cesophagus passes back as a narrow 
tube without diverticula, merging into the sacculated intes- 
tine behind the genitalia in about the twenty-fifth segment ; 
there is no typhlosole. That part of the gut which passes 
through the segments xi—xvi is particularly narrow,—not 
much wider, indeed, than the dorsal blood-vessel. 
With regard to the vascular system, I only noted the 
following points :—The dorsal vessel is very distinctly moni- 
liform in this anterior region; there is a supra-cesophageal 
vessel passing through segments v to x, which appears, how- 
ever, to unite with the dorsal vessel at each septum, and from 
these points of union the hearts are given off. Of these there 
are six pairs lying in the segments just mentioned, the first 
one being smaller than the rest. 
The nephridia commence far forwards; there are three 
1K. kelleri appears to be exceptional, for Michaelsen states that the 
eight septa begin at segments vi/vi, and end at x1u/xtv, and places the 
first prostate in segment xiv. It is just possible that some mistake, so easily 
made, has oceurred in reckoning the “rings” in the anterior part of the body, 
