EWING'S PROTURAN SPECIES — BONET AND TUXEN 273 



On the foretarsus (figs. 15-16), t 1 resembles to some degree sensilla 

 t 1 of wheeleri in having the thickening along one margin of the disc; 

 the disc itself is often quite invisible. The a is very short, c 2 longer, 

 and c 1 shorter than in E. wheeleri; they are nearly alike in size; e and 

 especially g are shorter. The t 1 is located very near the base of 

 a 3'; d:p is 8:11 (=0.75). The empodium is longer in relation to 

 the claw than in wheeleri; the relation is 8:9 ( = 0.9). We will call 

 this relation e:u, empodium: unguis; in wheeleri it is 3:5 (=0.6). 



The female squama genitalis (fig. 17) resembles that of wheeleri, 

 only the outer angles of the well-sclerotized part are longer and 

 proceed proximally to a larger degree. Processus sternalis is as it is 

 in wheeleri. 



The chaetotaxy is schematically as follows (the pleurals are included 

 in the tergum): 



Figures 18-19 show the chaetotaxy of abd. V. It is apparent that 

 the accessor} 7 setae in the terga are a little shorter than the principal 

 ones, "la" in VII being as usual very much shorter. The shape of 

 the anterior tergal lamina is also shown. 



On the basis of the chaetotaxy of s VIII, the species belongs to the 

 wheeleri group; it is apparent that the chaetotaxy exhibits no difference 

 at all from this species. 



Tarsus III has a spine which is weaker than that usually found in 

 the genus, although it is distinctly stronger than even the strongest of 

 the setae. Figure 20 shows that the setae on the tarsus are of 

 extremely different development. 



The most significant characters are found in the mouth parts and in 

 the slender shape of the head (fig. 21). The mouth parts (fig. 22) 

 exceed the forcmargin of the head so that the tip of the mandibles, 

 which is equipped with distinct striae, is easily seen. The galea and 

 outer lacinia (La 2) are nearly as long as the maxillary palpus. Both 

 laciniae have a very characteristic appearance different from that of 

 E. wheeleri and E. transitorium. 



Eosentomon pallidum Ewing 



Figures 23-28 

 Eosentomon pallidum Ewing, 1921b, p. 194; 1940, p. 525.— Bonet, 1950, p. 116. 



This species, especially the chaetotaxy, was redescribed in 1950 by 

 Bonet, but without figures. In 1940 Ewing supposed E. minimum 



