Descriptions of some Australian Pliyllopoda. 17 



Head triangular, with the frontal part narrowly produced, and 

 having the usual affixing organ, rostral expansion in female 

 much shorter and blunter than in male, and in both sexes 

 defined from the frontal part by an obtusangular notch. 

 Legs 17 pairs in female, 18 pairs in male, epipodites, or gills 

 not particularly large. The 2 anterior pairs of legs in male 

 subsimilar, prehensile, hand rather expanded, with a triangular 

 projection inside, claw very strong, and tipped by a small 

 sucking disk, thumb obtuse, densely clothed with curved spi- 

 uules and carrying a small setous lobe, subapical appendage 

 biarticulate. Tail with about 10 anal denticles on each side. 

 Colour in alcoholic specimens Avhitish, with 2 dark brown 

 patches on each side of the dorsal face, extending from the 

 umbones anteriorly and posteriorly. Length of adult female 

 10 mm., of male 11 mm 



Remarks. I think I am right in regarding the above- 

 characterised form as identical with that recorded by the Rev. 

 R. L King as Limnadia stanleycma. As to his L. sordida, it 

 is said to differ in having a greater number of spines on the 

 tail, and in the triple articulation of the subapical appendage 

 of the 2 anterior pairs of legs in the male. In the present form 

 this appendage is evidently only biarticulate, and the number of 

 spines on the tail are never as many as stated to be the case 

 in L. sordida. The form described by Prof. Claus is un- 

 questionably that here treated of; but the specimens examined 

 by him were far from being fully grown, though sexually 

 mature. In fully grown female specimens the shell exhibits 

 an appearance very different from that in younger ones, and 

 this difference is indeed so striking, that at first I was in- 

 clined to believe, that 2 distinct species were contained in the 

 collection. But, on a careful examination of the specimens, 

 both as to the shell and the enclosed animal, I have now 



5 — Archiv for Math, og Naturv. B. XVII No. 7. 



Trykt don 1'.). januar 1895. 



