Spiders and Their Near Relatives 



by black lines, palpi usually yellowish. Occurs in 

 Texas, Arizona, and California. Vejovis spinigerus 

 CC. Under side of cauda, with the whole of the dorsum and 

 the palpi dark reddish brown; no black lines indicating 

 the keels on the cauda, smaller than the preceding 

 species. Occurs from South Carolina to Texas. 



Vejovis carolinus 



Genus HADRURUS (Had-ru'rus) 



There is a strong brown tooth on the lower margin of the 

 movable finger of the chelicerae. The last segment of the tarsus 

 with a large empodium. The penultimate tarsal segment of the 

 three front pairs of legs with a comb of long bristles. 



Hadrurus hirsutus (H. hir-su'tus). — This is a very large and 

 hairy species found in the Southwest. The penultimate tarsal 

 segment of the first three pairs of legs is furnished with long 

 hairs on the back. 



Order SOLPUGIDA* 



The Solpugids 



The order Solpugida (Sol-pu'gi-da) includes a small number 

 of comparatively rare arachnids; only a few species occur in the 

 United States, and specimens of these are rarely found; they 

 occur in the southern and western portions of our territory. 

 They are chiefly nocturnal and hide during the daytime, which 

 may account in part for their unfamiliarity, but some are 

 diurnal. 



Figure 37 will serve to illustrate the form of these strange 

 arachnids. Their most striking features are the enormous size 

 of the chelicerae, and the segmented condition of the thorax. 

 In the latter respect they resemble the Microthelyphonida and 

 the Shizonotidae already described; the segment bearing the second 

 pair of legs (the fourth pair of appendages) being more or less 

 distinct, and the segments bearing the last two pairs of legs 



* The name Solpugides was proposed by Leach in 1815 as a family name; it is now spelled Solpugida 

 for the sake of uniformity with other ordinal names of Arachnida. The name Solifugae, which is used 

 by some writers was proposed by Sundervall in 1833; there seems to be no good reason for substituting 

 this for the older name. The name Galeodea, proposed for this order by Kirby and Spence in 1826, 

 is used by some writers, evidently because the generic name Galeodes is older than the generic name 

 Solpuga; but as the name Solpuga is still retained for one of the genera of this order, there appears no 

 good reason fur adopting the latter ordinal name. 



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