216 ALBATROSS EXPLORATIONS, INSECTS HOWARD. 



This species is described from two adult and one young specimen from 

 Chatham Island, one young individual from James Lslaud, and another 

 from Albemarle Island. The type is an adult from Chatham Island. 



The five species belonging to this group of Scolopendra may be sep- 

 arated as follows: 



Femora of penultimate pair of legs armed ; first dorsal plate with a transverse 

 sulcus. 



a. Ventral plates not sulcate; tibiae of anal legs armed with spines Prasina. 



aa. Ventral plates with two longitudinal sulci. 



b. Last dorsal plate without a median cariua. 



c. Femora of last three pairs of legs armed; tibia? of anal legs unarmed. .. Valida. 



cc. Femora of all legs armed; tibiae of anal legs armed Gigas. 



bb. Last dorsal plate with a median cariua. 



d. Femora of penultimate pair of legs not armed above ; spines at apex of femora 



of 2-20 pairs of legs. 2 or 3 ; spines of apical process of anal legs, 1-3 ; spines 



of apex of anal pleurae, 1-3 Firidicomis. 



dd. Femora of penultimate pairs of legs with 1-3 spines above ; spines of apex of 

 femora of 2-20 pairs of legs, 4 or 5; spiues of apical process of femora of 

 anal legs, 6-8; spines of apex of anal pleurae, 9-12 Galapagoensls. 



7. Scolopendra sp. t 



No. 591, Abrolhos Islands, Brazil. 



A very young specimen and unidentifiable. 



C. Henicops chilensis Gervais. 



1847.— Henicops chilensis Gervais. 



Apteres, iv, 239 (Chile). 



No. 593, Port Churrnca, Straits of Magellan. 



One young mutilated female. 



Prosternal teeth, 4+4. 



