Some Ectoparasites in the South African Museum. 301 



some. In some cases, we believe, the normal flat paramera after 

 levering up the valvule establish a hold below that sclerite. The 

 arrow-shaped head very likely asts similarly as an anchor also 

 for a time, as just below each flange or fluke there is a directive 

 bristle on a sensory area, much stronger than those already 

 referred to. 



In this $ apparatus the most useful characters are the shape of 

 the basal plate and the relative proportions as well as the shape of 

 base, neck, and head of the free portion. 



We have seen at least three distinct species of Eurymetopus. 

 The great bulk of Dr. Peringuey's material seemed referable to the 

 form figured and described by Piaget as taunts (Les Pediculines, 

 p. 332, pi. xxxi. fig. 3, 1880). In New Mallophaga, i. p. 135, pi. xi. 

 figs. 3-6 (1896) Kellogg recorded and excellently figured a species 

 of Eurymetopus slightly smaller than true taurus with which, how- 

 ever, he at the time identified his captures from various Californian 

 Tubinares. Through the kindness of Mr. Wm. Evans, Edinburgh, 

 we have recently had an opportunity of examining an apparent $ of 

 the Californian species, taken in the Pacific by the Challenger 

 Expedition in the 70's of last century. And still more recently 

 Professor Kellogg writes he is now of our opinion, having had both 

 species from the Pacific and the Antarctic. The form he has 

 already figured will thus soon receive a name from one best entitled 

 to bestow it. 



In Dr. Peringuey's gatherings there is a still smaller and more 

 primitive species of the genus for which the name Eurymetopus 

 simplex is here proposed. In almost every respect it appears to be 

 a phylogenetic understudy of Kellogg's unnamed species. The 

 antennae $ are simple in so far as they show no expansion terminally 

 on the 3rd joint. But they have the extremely long 2nd joint so 

 characteristic of the genus. The antennae, moreover, differ sexually. 

 The presence of an appendage on the 3rd joint in Eurymetopus is, we 

 may remark, more apparent than real. The joint as a whole is not 

 much modified, but is merely a little wider terminally. But the 

 distal edge being slanted, not transverse, and the 4th joint minute 

 and placed back from the end of the 3rd joint somewhat, produce the 

 impression of a considerable modification. The difference between 

 the antennae of simplex and those of taurus is only comparative. 

 These curious $ antennae, Lipeuroid in facies, are carried curved 

 forward, and how they are applied is not plain. 



We believe that in addition to the 3 species now noticed Mjoberg's 

 diagram (Fig. 141) represents a valid 4th. 



