- ARACHNIDA. | 129 
The Cyrtaucheniez, the fourth and last group of the Ctenizine, has three Central 
American representatives, Hutychides, Eucteniza, and Enrico, all restricted to Mexico. 
One other genus, Myrmekiaphila, from Carolina and Virginia, occurs in the New World. 
Of the rest, four in number, one is Burmese, one (Cyrtauchenius) Mediterranean, and 
two South African. ‘ 
The Central American forms of the Dipluride are referred to two subfamilies, the 
Diplurine and the Ischnotheline. The Diplurine, corresponding with Simon’s group 
Diplurez, have a very singular distribution. In South America there are about nine 
genera ranging from Chili northwards, Fufius the single Central American genus 
spreading into Costa Rica and Guatemala from Brazil, Ecuador, and Bolivia. Four 
genera occur in Australia, two in Madagascar, and one in the Mediterranean area. 
The distribution of the Ischnotheline (= Macrothelee, Simon) is equally remarkable. 
There are two known Central American genera. vagrus spreads southwards from 
Mexico and Guatemala to Bogota, and northwards into the United States (Idaho). 
One species, possibly generically distinct from it, has been recorded from South Africa. 
The nearest ally of Evagrus appears to be the Transcaspian genus Phyxioschema, which 
is itself closely akin to Stenygrocercus from Australia and New Caledonia. Other less 
closely related genera occur in the Old World in the Mediterranean area, in tropical 
West Africa, Burma, China, and New Zealand. Jschnothele is a very distinct type 
from those above mentioned. It occurs in Mexico, Nicaragua, Guatemala, and the 
northern countries of South America, and in the Old World, in tropical Africa, 
Madagascar, and India. 
The Central American genera of Theraphoside * have been revised since 
Mr. Cambridge described them. ‘The species he referred to Eurypelma have been 
split up into a number of genera and are probably susceptible of further subdivision f. 
The species named emilia, pallidum, smithii, and vagans belong to Brachypelma, 
which ranges from Mexico to Colombia in South America. ‘Those named ruséicum 
ahd seemani are referred to Aphonopelma, which extends from the Southern States of 
North America into Mexico and Costa Rica. The species described as Lurypelma 
longipes from Guatemala is the only known form of the genus Citharacanthus, which 
is allied to Cyrtopholis, a genus mainly confined -to the Greater and Lesser Antilles, 
but represented in Central America by C. pernia, referred by Cambridge to Hapalopus, 
from Orizaba in Mexico. ‘The genus Dugesiella, containing species from Texas and 
Mexico (Guanajuato) has been added to the Central American fauna since 
* The Spiders of this family are those commonly referred to in textbooks and Natural Histories as 
Mygale, or * Bird-eating ” Spiders. 
+ One of the species, spatulatum, was included owing to an error in locality. It belongs to the genus 
Grammostolu (== Citharoscelus) and came from Chili. Another Chilian species that was entered and must 
‘also be eliminated is Paraphysa manicata. 
-- BIOL. CENTR.-AMER., Introd. Vol., June 1915. = S 
