WITH DESCRIPTIONS OF NEW SPECIES 



2 5 



The number of antennal joints in the larger specimen is 20; 

 the scuta are shaped almost as in immaculata, but are dis- 

 tinctly more sparingly clothed with seta? which are com- 

 paritively longer, whilst the setae on the cerci are fewer and 

 distinctly longer, quite twice as long as we have seen in any 

 specimen of immaculata, being at least two-fifths the length 

 of the greatest depth of the cercus, those on immaculata never 

 being more than one-fifth the depth of the cercus. 



Fig. 2. Scutigerella spinipes. 



A. Metatarsus and tarsus of last left leg X 120. 



B. Tarsus of left front leg X 120. 



C. Lateral view of cercus X 120. 



The chief feature of the animal lies in the chaetotaxy of the 

 legs. In immaculata the hind legs are clothed rather closely 

 with short setae, those on the dorsal surface of the tarsus of the 

 hind leg in the specimens I have seen never being longer than 

 the claws, whilst those on the inside margin of the tarsus are 

 inconspicuous. In spinipes all the legs are armed with a few 

 conspicuously long setae, those on the dorsal row of the tarsus 

 of any leg being longer than the claw of that leg. The leg of 

 the hind pair in my larger specimen has one, three and either 

 four or five long dorsal bristles on the tibia, meta-tarsus and 

 tarsus respectively, the shortest of these being distinctly 

 longer than the longer claw ; whilst there is a row of four or five 

 on the inner margin of the tarsus, each being about as long as 

 the longer claw, and a single longer bristle on the inner distal 

 ansde of the meta-tarsus, the latter bein? in itself a srood 



