274 THE SCOTTISH NATURALIST 



are weakly emarginate near to the gland pores. The inner 

 posterior corners are more or less truncate. 



The legs are without the long hairs which are dis- 

 tinguished by the name of swimming hairs, but at the distal 

 end of the fifth segment of the third and fourth pairs of legs 

 there is a single hair, considered to be the rudiment of a 

 swimming hair. The length of the legs ranges from 

 0-90 mm. in the first pair to 1-70 mm. in the fourth pair. 

 There does not appear to be any necessity here to lay any 

 stress on the spines occurring on the various segments, 

 beyond the coarsely pectinated one lying at the distal end 

 of the fourth segment of the fourth pair of legs. The claws 

 are slender, with a small lamina and a minute accessory 

 claw. 



The genital area extends very little beyond the epimera ; 

 each of the valves has from fifteen to twenty hairs along its 

 inner margin. The acetabula are elliptical and do not vary 

 much in length. The chitinous ridges at the anterior and 

 posterior ends are strong and conspicuous. 



The anus and the accompanying gland pores are each 

 surrounded by a strong chitinous ring. 



The male and larva- are unknown, but the nymph has 

 been found and briefly described by Koenike. 



Macrosternodesmus palicola, Brol ., in Scotland (Forth). 



In December 19 12 I sent Mr R. S. Bagnall, amongst other things, 

 a few Myriapods, which I had collected on the Isle of May on the 

 7th of the previous month. Among them he found an immature 

 female of Titanosoma jurassicutn, Verhoeff (now stated to be 

 synonymous with Brolemann's Macrosternodesmus palicola), a tiny 

 Diplopod which he had then recently added to the British list from 

 the North of England (see Zoologist for July 191 2). Another 

 Diplopod, Brachydestnus superus, Latz., was fairly common on the 

 Isle of May in November and December 1912. William Evans, 

 Edinburgh. 



