THE GENERA AND SPECIES OE SYMPHYLA. 37 



the lower uiargiu. The seta3 in all whorls at least somewhat 

 shorter thau iu S. a n g-uicul ata, and especially the seta3 on 

 the lower half of the joints considerably shorter thau in that 

 species. The terminal joint with one large and long-stalked 

 striped organ on a i-ather low protuberance, and besides a 

 small and very short-stalked similar organ. 



Scuta (Bg. 3h). — As to shape and arrangement and 

 number ofseta3 they do not differ perceptibly from those in S. 

 unguiculataj but the antero-lateral setge are slightly shorter. 



Legs. — Tlie last pair (fig. 3 c) is more slender than in S. 

 unguiculata, and the tarsus is five times longer than deep. 

 The metatarsus with five or sis:, the tarsus with seven spines 

 in the outer dorsal row ; the setve increase gradually a little 

 in length from tlie base to the end of each joint, but the 

 longest seta3 are decidedly shorter than half the depth of 

 the metatarsus; the dorsal seta? on the tibia are short. The 

 anterior claw (fig. 3 d) curved as in S. unguiculata, but 

 less slender and considerably shorter thau in that species ; 

 the posterior claw is of moderate depth, rather curved, and 

 two thirds as long as the other ; the front seta rather short. 

 The exopod long, a little shorter than the depth of the meta- 

 tarsus. The first pair of legs with the anterior claw (fig. 3 e) 

 elongate, moderately slender, and a little curved; the other 

 is moderately slender, and a little more than half as long 

 as the anterior one. The front seta is shorter than the short 

 claw and moderately robust; not very conspicuous. 



Cerci (fig. 3/). — Nearly as in S. uuguiculata both as 

 to shape and clothing, only a little shorter and thicker, being 

 slightly more thau four times longer than deep, and the 

 clothing of rather short seta3 a little more dense. The 

 terminal area looks upwards. 



Length. — 2"8 to 4 mm. 



Locality. — In the tan-bark in hothous-es iu the royal 

 garden, " Rosenborg Have," Copenhagen, I discovered this 

 species many years ago, and have found it again every time 

 I visited the place. I have also found it in similar bark in a 

 very warm hothouse in the Botanical Garden in Copenhagen. 



