new Suiiftitfu and PeJipalin. 235 



tlieir lengtli with very iiiuneious slender cylindrical bristles. 

 Papilla) are absent. 



Legs. — Metatarsus of fourth lej^ armed with a row of six 

 spines on tlie inner side of its ventral surface, and also with 

 an a|iical spine. 



Colour. — Head-plate rather deep brown, but with an 

 indistinct central yellowish stieak; ventral surface of cephalo- 

 thorax yellow. Abdomen rather dark brown above, the 

 tergites being very dark ; its ventral surface is paler. Cheli- 

 cera dark yellowish to pale brown in tint. Femur of palp 

 yellowish except at the distal end, which is dark brown ; 

 tibia, metatarsus, and tarsus of palp deep brown throughout 

 their length above. Proximal segments of legs and th« 

 malleoli yellow ; femora of anterior legs brown at the distal 

 end only ; the posterior legs have this segment deep brown 

 distally for more than half its length ; tibia3 of anterior legs 

 only slightly darkened, but those of the posterior legs are 

 deep brown throughout their length ; metatarsi of posterior 

 legs brown at the proximal end ; tarsi yellowish throughout. 



Measurements in mm. — Length of trunk 19, of tibia of 

 palp 9" 75, of metatarsus of palp 7 ; width of head-plate 

 about 5'75. 



Material. — An adult male example (the type) and an 

 immature exam])le from Mexico (Fry Coll.). Both these 

 specimens are dry and pinned. 



Remarks. — Closely allied to E. affinis, Krpln., and to 

 E. girardij Putnam (both of which are found in Arkansas). 

 The new species differs from the former in the coloration of 

 its appendages and from the latter in the dentition of tho 

 movable tinger of the chelicera. 



Masiigoproctus formidahilis, sp. n. 



J . First sternite marked with a pair of very shallow 

 impressions and with a little median impression near the 

 posterior margin also ; it is furnished with transverse ridges 

 and granules at the sides and is transversely striate in the 

 middle, except posteriorly, where it is finely punctured. 

 Second sternite very coarsely punctured at the sides and with 

 the usual raised area in the middle. Third sternite with 

 distinct punctures and striae. Hemaining sternites smooth 

 and polished ; they have only a very indistinct sculpturing 

 of line irregular lines, and are furnished with very line but 

 distinct punctures ; close to the lateral margins a few minute 

 granules are present. 



Ommatidia minute and oval in shape, like those of 



