Gon Oe ale 
VOL. XxXI. JUNE, 1914. No. -3 
A NEW DIPLOPOD FROM THE GALAPAGOS ISLANDS 
WITH NOTES ON THE CHILOPODS. 
By Rautew V. CHAMBERLIN. 
The type specimens of the interesting new diplopod here de- 
scribed were collected on Chatham Island in the Galapagos Archi- 
pelago in 1898 and 1899, presumably by R. E. Snodgrass as a 
member of the Stanford Expedition of 1898-1899. 
Of the five species of chilopods known from the Galapagos Is- 
lands, specimens of all of which were secured by the expedition 
mentioned, four appear to be indigenous. ‘The five species are as 
follows. 
1. Orphnaeus brevilabiatus (Newport). 
One female from Hood’s Island (May 18, 1899), between which 
and specimens from Central America, the West Indies and else- 
where I fail to detect any essential differences. A very common 
geophiloid throughout the warmer parts of both hemispheres. 
2. Mecistocephalus parvus Chamberlin. 
I at first regarded the specimen of this species, which were from 
Clipperton Island (November 23, 1898), as belonging to M. punc- 
tifrons Newport; but a more critical study of material from India, 
the East Indies and different parts of warmer America has con- 
vinced me that Newport’s species has been too broadly conceived 
by Haase and others and that several clearly distinct species have 
been confused under the name. The confusion has resulted largely 
because the species agree in having the number of pairs of legs 
constantly 49, and do not differ in various other characters that 
ordinarily serve for the discrimination of species in related families. 
The species dominant in Java and the Malay Peninsula is a dif- 
ferent one from the typical punctifrons of India; and the species 
occurring in the Bermudas, West Indies and South and Central 
America is also different and must bear the name gwildingi applied 
