THE GENERA AND SPECIES OF SYMPHYLA. 67 



than deep, set with rather few seta?, of which two or three 

 near the terminal area are rather long', the others somewhat 

 shorter, and scarcely more than half as long as the depth of 

 the cerci. The terminal area looks obliquely upwards and 

 outwards ; it is rather long, more than two thirds as long- as 

 the depth of the cerci, and adorned with a system of partly 

 somewhat irregular longitudinal lines (fig. 3 1-) ; the terminal 

 surface outside this plan without transverse lines. The apical 

 seta as long as or a little longer than the terminal ]ilaii, and 

 robust at the base. 



Length. — 3 to 3"4 mm. 



Locality. — Rome, fifteen specimens (Dr. F. Silvestri); 

 Aspromonte in Calabria, in a forest about 4500 feet above the 

 level of the sea, twelve specimens (the author). 



Distribution. — Judging from the length of the first pair 

 of legs on the fig. 10 in 'Ann. d. Sc' referred to above, it 

 must be this species which has been drawn and described by 

 Gervais ; it can be added that he writes that the antennas of 

 his animals could contain more than fourteen joints, " vingt 

 memo dans I'etat complet;" and this last statement strengthens 

 the opinion that it is our S. notacantha, and not the species 

 established later on by Muhr as S. microcolpa, which he 

 has examined. He had collected his specimens mentioned in 

 a garden in Paris, and in the environment of the same town. 

 Grassi states (p. 59G) that he has captured the species at 

 Rovellasca (in the province of Como), near Lecco ; at Spara- 

 nisi, near Capua; and at Catania. On p. 594 he mentions the 

 setse which I have named the antero-lateral pair, and this 

 statement proves that at least the animals especially exa- 

 mined by him have belonged to S. notacantha, and not to 

 S. microcolpa. All other localities out of Italy mentioned 

 in the literature are uncertain or incorrect, and in the 

 present state of knowledge it is impossible to say more on 

 the distribution of this species. 



Remarks. — This very interesting species is easily dis- 

 tinguished from all other forms hitherto known by the 

 characters set forth in the analytical key for the groups. 



