THE GKNEKA AND SPECIES OF SYMrflYLA. 45 



thinner tli.an those on the metatarsus. The claws (in my small 

 specimens) are rather short, and not very different in length 

 (figs. 3d and 3 e) ; the front seta is moderately developed. 

 The exopod is somcAvhat shorter than the depth of the 

 metatarsus. The first pair of legs with the claws moderately 

 developed in all respects (figs. 3/ and 3^), the anterior one 

 much — but not twice — longer than the other; the front seta 

 is long and slender. 



Cerci (fig. 3 h). — They are proportionately small, and 

 from scarcely four to four nn.d a half times longer than deep, 

 with the distal part produced and curved upwards; they are 

 set with comparatively very few seta3, which increase very 

 much in length from the base of the cerci outwards, and the 

 most distal seta3 are from a little to considerably longer than 

 the depth of the cerci; a proportionately long distal portion 

 of the cerci without any setfe. The terminal area is rather 

 long and looks outwards, sometimes somewhat upwards 

 as well. The apical seta is exceedingly long, much longer 

 than the depth of the cerci. 



Length. — The adult specimens seen by me measure 1*7 to 

 2 mm. ; according to Latzel the length varies from 2 to 5 

 ram. 



Locality. — Palmi in Calabria, one specimen (the 

 authoi-) ; four specimens have been captured by Mr. 0. 

 Borner either near Palmi or at Catania (Sicily). 



Distribution. — Latzel has examined specimens from 

 various parts of Austria-Hungary and from Russian Poland ; 

 Muhr records the species from Bohemia. As mentioned above 

 on p. 43, it remains doubtful whether S. gratia^, Ryder, 

 captured at Philadelphia, near AVashington, D.C., and iu two 

 other localities in the United States, is synonymous with 

 S. nivea. Scop., or belongs to a closely allied species. 



Remarks. — Tliis species is easily distinguished from all 

 forms described above by having outstanding long setae on 

 the ninth, eleventh, and twelfth scuta, and by having com- 

 paratively very few setfe but some of them very long on the 

 short cerci. From the two following species it is sharply 



