398 CLASS ARACHNIDA. 



the males is hollow at its base, and finishes in an elongated 

 and very sharp point. 



South America and the Antilles furnish other species, 

 which are known by the French colonists under the name of 

 araignees-crahes (crab-spiders). Their bite is supposed to be 

 very dangerous. The East Indies have also another very 

 large species, {M.fasciata, Seba., Mus., I. Ixix. 1. ; Walck. 

 Hist, des Aran., iv. 1. fem.) We also receive from the Cape 

 of Good Hope, a species almost as large as the avicularia. 

 Another of the same division, {M. valentina) has been found 

 in the arid soils and deserts of Moxenta, in Spain, by M. 

 Dufour, who has described and figured it, in the fifth volume 

 of the Annals of the Physical Sciences, published at Brussels. 

 M. Walckenaer has made us acquainted with another species 

 found in this peninsula {M. calpeiana) which has two 

 eminences above the respiratory organs. These two species 

 form a small particular group, having as character, the hooks 

 of the tarsi projecting or naked. 



In the following mygales, the superior extremity of the 

 first articulation of the forceps presents a series of spines, 

 articulated, and mobile at their base, according to the obser- 

 vations of M. Dufour, and forming a sort of rake. 



The tarsi are less hairy underneath than in the preceding 

 division, and their hooks are always uncovered. The males of 

 one species, the only one which I have seen, have their copula- 

 tory organs less simple than those of the preceding species. 

 The scaly and principal piece encloses in an inferior cavity a 

 particular body, semi-globular, and terminating in a point, 

 bifid. 



These species excavate, in dry and mountainous places, 

 situated to the south, in the southern countries of Europe, and 

 some others, subterraneous galleries, tubiform, being often two 

 feet in depth, and so sinuous, that, according to M. Dufour, 



