86 H. J. HANSEN. 



(fig. 4 a) with the processes slightly broader than long, less 

 produced than those of the second scutum, but with the same 

 number of setas; the distance between the processes almost 

 twice as lono- as their lenofth : the antero-lateral setee as on 

 the preceding scutum, and only four sette between the 

 antero-lateral and the distal ones. 



Legs. — l^he last pair (fig. 4 h) nearly as in S. vulgaris in 

 several respects. The tibia with two moderately short, 

 dorsal protruding sette; the metatarsus with two dorsal 

 protruding setse in the anterior row, the distal one much 

 longer than the other, but yet considerably shorter than the 

 depth of the joint. The tarsus three times longer than deep, 

 with three protruding setas in the anterior dorsal row, all 

 somewhat shorter than the depth of the joint. The claws 

 moderately long, subequal in length, the anterior somewhat 

 deeper than the slender posterior claw. (The first pair of 

 legs, which in this group generally are difiicult to observe, 

 have not been searched for.) 



Cerci (fig. 4 c). — A little shorter than the last pair of legs, 

 not fully four times longer than deep. They are set with a 

 moderate number of sette, which differ somewhat in length 

 from each other, but none of them are more than half as long 

 as the depth of the cerci; some of the sette are protruding, 

 and the others depressed. The terminal area more tlian two 

 thirds as long as the depth of the cerci and looks essentially 

 downwards; the surface above it is rather long, with about 

 eight conspicuous transverse lines; the apical seta nearly as 

 long as the area. 



Length. — The specimen, which is rather extended, 

 measures 1*7 mm. in length. 



Locality.— Austin, Texas (Prof. W. M. Wheeler). 



Remarks. -This species is more closely allied to the 

 European S. vulgaris than to any other form, but it is 

 easily distinguished by the second scutum, the })rocesses of 

 wliich are larger and moie produced, its sotie, the antero- 

 lateral pair included, being much longer. Tlie number of 

 autennal joints is unusually high, considerably higher than 



