72 
A ffinities.—It isa little difficult to know where the proposed 
new genus should be placed. Dr. Pilsbry points out (Man. 
review has the tail valve unslit, as in Plaxiphora, but has, on 
the other hand, a striking character in its "peculiar girdle 
bristles.” 
I pointed out in my: paper on Loricella some points of 
similarity between that genus and Placiphorella. Since 
and May's remarks on this species in their valuable paper 
(Proc. Mal. Soc., vol. xii., pts. ii. and iii., Noy., 17! 
, “Receipt 
species has no close relationship with Frembleya, the animal 
being obviously different. This is now being investigated, 
but in the meanwhile a nearer ally from a superficial 
examination might be Loricella." : 
The outward appearance of the tail valve certainly 
suggests Loricella, and the strange girdle bristles do still more 
so, but the unslit tail valve and the non-emarginate girdle 
show a closer affinity with the Mopaliidae, Pils. For exi 
present I think we must leave the suggested new genus under 
Plisbry’s family Mopaliidae, but future research may necessi- 
tate some revision of this family and that of the Liolophurinae. 
a rather striking variant from the normal form. h 
e program: sulci, edged with black, which traverse the 
pleura i x 
areas, are reduced in this specimen on e valves : 
three, on others four on each side, and the similar blac 
dashes on the dorsal area to two on each side 
: penn, the sulci are hardly developed at all, and the black 
P war me : 
E is 
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