Aewidsson — On some Irish Maldanidae. 219 



question is not very sharply defined. The anal cone is low and l^arely 

 perceptible ; the anus is surrounded by several wrinkles, which, towards the 

 anal opening itself (which is obviously not completely closed in fig. 8), has 

 faint, slightly pointed elevations; the ventral anal papilla proper is prolonged 

 finger-fashion. In fig. 12, where the intestine is shown in a somewhat 

 projected position, these formations can be seen excellently. Whether the 

 ventral nerve-cord can be seen between the large ventral anal cirrus (on the 

 edge of the cavity) and the anal papilla cannot be determined, because of the 

 smallness of the posterior ends at my disposal. 



The anal cirri (on the edge of the cavity, cf. figs. 8-12) consist not only of 

 the large ventral one, which is somewhat longer than half the diameter 

 of the posterior funnel-like cavity, but also of three pairs of long ones and of 

 short ones interposed among these. The longer ones, which are equal to half 

 or more than half of the large ventral cirrus, taper, like this last, pretty evenly 

 towards the slightly rounded point. The position of the three pairs mentioned 

 is displayed in the figures. The small intermediate short cirri have distally 

 short finger-like lobes, which vary slightly in number and position. If the 

 seven intervals between the long cirri, beginning from that which lies nearest to 

 the left of the ventral cirrus, are numbered continuously from 1 to 7, the 

 following table shows at a glance the number of the short cirri in the six 

 individuals investigated (the individuals depicted in figs. 12 and 10 being 

 Nos. 1 and 2 respectively). The individuals are as far as possible arranged 

 in order of magnitude, beginning with the larger ones ; — 



No. l\ 



3, 2, 2, 3, 4'-, 



.2,2, 



cirri 



,. 2, 



3, 1, 4, 2, 4, 



3,3, 



,, 



„ 3, 



2, 3, 4, 2, 2, 



2,3, 



jj 



„ 4', 



3, 2, 3, 4, 3, 



2,3, 



J) 



„ 5', 



2, 1, 1, 1, 2, 



1,1, 



)j 



„ 6', 



3, 2, 0, 2, 1, 



1, -i'. 



) )j 



If in the last-named individual, or No. 6, the small lobate cirri are taken 

 one after another, beginning to the left of the large vent ral cirrus, they have 

 the following number of lobes : 3, 2, 1 ; 4^ 2 ; 3, 2, 3 ; ?^ 2, 4, 1* ; 4, 2\ 3 ; 

 2^ 3 ; 2^ 2, 3. 



The three complete individuals at my disposal have all the same nimrbe r of 



• The posterior part is legenerated, though on the whole fairly perfect ; this is especially the case 

 with No. 1. 



- The middle ones are not completely separated ; in No. 6, moreover, they are of somewhat 

 unequal length. 



' First divided into two, with 3 and 1 lohes. * Broad, divided into two, at first ; lohes P 



* Narrow. ^ Eather deeply divided. 



[2jff2] 



