PROTOTRACHEATA. 139 
Three classifications of the genera into families and subfamilies have been put 
forward by Evans, Bouvier, and Clark. That of Clark, which is a compromise, with 
amplifications, between the other two, will serve to show the mutual relationships 
of the genera above mentioned admitted at the present time :— 
Family Perrpatip”. 
Subfamily Peripatine. 
Genus Peripatus (Mesoperipatus). Tropical America and Africa. 
Subfamily Eoperipatinze. 
Genus Eoperipatus. Sumatra, etc. 
Genus Typhloperipatus. N.E. India. 
Family Periparopsip&. 
Subfamily Peripatopsine. 
Genus Peripatopsis. 8. Africa. 
Genus Paraperipatus. New Guinea, Solomon Islands. 
Subfamily Peripatoidine. 
Genus Peripatoides. Australia and New Zealand. 
Genus Ooperipatus. Australia and New Zealand. 
Genus Opisthopatus (Metaperipatus). Chile, S. Africa. 
Attention may be drawn to one or two interesting faunistic points revealed by this 
arrangement :— 
1. Resemblance, in the case of the Peripatide, between the Malaysian forms and 
those of tropical West Africa and of tropical South America. ‘This case is 
closely paralleled by that of the dwarf Squirrels, Nanosciuride, amongst the 
Mammalia. 
2. The restriction of the genera of Peripatoidine to Australia, New Zealand, 
Chile, and South Africa. 
3. The ascription of the Papuasian genus and one of the South African genera to 
the same subfamily, Peripatopsine. ‘These genera, however, are not very 
closely allied. 
THe CENTRAL AMERICAN SPECIES. 
Bouvier pointed out in his Monograph that the tropical American species of 
Peripatus fall into two groups, which he named Péripates andicoles and Péripates 
caraibes. To the former, restricted to the mountains of Central America and the 
northern Andes, Cockerell gave the name Oroperipatus, limiting the term Peripatus 
to those found in the West Indies and lower-lying countries of South and Central 
America. This genus was subsequently divided by Clark into the following subgenera:— 
Plicatoperipatus, known from one species (jamaicensis) from Jamaica ; Macroperipatus, 
T2 
