466 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Colony, many localities in the United States, Mexico, Venezuela, 
Chile, southern Brazil, Patagonia, Java, Sumatra, Siam, and India. 
To quote from Hansen: “I venture to state that species of this group 
can be captured in all countries of the world with the exception of the 
Arctic and Antarctic regions.” “I am convinced that nearly one 
hundred species and perhaps a considerably higher number are still 
undiscovered.” 
Hansen finds that Seutigerella seems to be distributed a little nearer 
to the polar regions than Scolopendrella and he thinks that there will 
be more Seolopendrellas than Seutigerellas found in the warmer 
regions. Pie also states that with the exception of Seutigerella immacu- 
lata all the species are moderately limited in range. This one species 
seems to have a rather general distribution from 60° N. lat. in Sweden 
throughout Europe, in Algeria, in South America, in Mexico, and in 
several localities in the United States. 
Surrounding Fauna. 
The group of animals found with Seutigerella in southwestern Ohio 
is a somewhat definite one, comprising as it does those animals that 
live in non-cultivated and protected localities under stones, or between 
the decaying layers of forest leaves or in the loose loam beneath these 
leaves. 
The particular forms found in the same general habitat with Scuti- 
gerella immaculata are as follows: 
Myriapoda. 
Scolopendrella sp. unidentified, very infrequently found. 
Pauropus sp., abundant. 
Scolopocryptops sexspinosus. 
Lithobiidae — several species, common, including Lithobius multidentatus. 
Mecistocephalus sp. 
Polydesmus sp. (probably serratus ), common. 
Fontaria sp. 
Iulidae, several species. 
Collembola (kindly identified by Dr. J. W. Folsom). 
Isotoma viridis. 
Aphoura ambulans. 
Tomocerus sp. 
Pseudosinella sp. 
Thysanura. 
Campodea sp. 
Nicoletia sp. (?) 
