ELISHA MITCHELL SCIENTIFIC SOCIETY. 49 



P. carolinensis Hentz, was one of those to which he refers. 

 I think he was right in placing it in this genus, but for the 

 relative position of the eyes, aud some slight difference in 

 the form of the labium there should be allowed some varia- 

 tion in generic character, which he undoubtedly would 

 have done, had he the opportunity to see the specimens. 



1. Pachylomerus carabivorus, n. sp female. 5 specimens, (Plate 

 V, figs 1 and 4, and 20.) 



Eijes. AnteriMi and posterior la'erals 'orming a trapezium; base '>f 

 which formed by the po,-t-laterals one-fifth longer than the opposite side. 

 Height about one-third of base. Vii.-w of eyts taken perpendicularly to a 

 plane parallel with the ventral surf ce of the ceoh'x. With this view 

 the ant- and po-t lateral eyes app ar elliptical in outline; but viewed 

 from a point toward whi h each eye may be said to ' look" they are 

 nearly circular n utline, ani app.-^ar like "dormer windows," from the 

 arched portion of the caput for each one. Fig. 3, Plate V , rep-esents 

 position aud re'ative size of the eyes as s^en from the v ew exi lained 

 above ; the arrows indicate the direction from which ihe greater number 

 of rays of light enter the eyes. Aline through the center of the ant cen- 

 tral eyes would pas=i a little above a line half way betw een the base and 

 O! posite side of the trapezium ; ant-centr^ls are s-ituated trom each other, 

 and from the ant-later% s about one diameter; receive the raj s of light 

 directly from above. Post-lateral eyes in line with base of trapezium, or 

 a trifle anter'or in some specimens, receive the rays of light from a point 

 ciudo-dor^al. Ant-lateral, largest, ant-central and post-1 tteral of about 

 equal size, post-central smallest, though in one specimen they are of 

 equal size with the ant-central and po.-t- lateral. 



Ceph'x a liitle longer than bnwd at widest pa^^. In one specimen 9 

 mm. X 8 25 mm., anoth' r 11 mm x 10 mm.,.&c, U-shaped ('epression 

 situa'ed about two-thirds of the distance from the ant' rior margin of the 

 caput. Base of ceph'x 3.5 mm; posterior angles quite sharply defined; 

 Literal edg'% from posterior angle to point of greate-t width, straight 

 Greate-t height of ceph'x, 6 mm. Mandibles 3 5 mm. long x 3 mm. dc-p. 

 Abdomen 12 mm. long, whole leng h of spider 24 5 mm. Legs: 1st, 16 

 mm; 2d, 15.25 mm ; 2rd 15-25 mm ; 4th, 19 5 mm. These aie meajure- 

 ments taken from one individual. In some the legs are 4, 1, 2, 3. 



Armature. The legs have few hairs, though more abundant on tibia, 

 metatarsus and tirsus, of all the legs, and patella III and IV. 



Patella iV on sides of proximal half covered with very short sp'nes. 

 Anterior side of metatarsus and tarsus IV slender spines; a few spines 

 on under side, distal end of tibia IV. Trochanter III with a short papilla. 

 Anterior side and upper distal end o* patella III, whole upper surtare of 

 metatarsus III, and oistal end of tibia III, covered with short, strong, 

 black spines. On upper side of proximal end of metatarsus III is an 

 elongated denuded spot, which seems to be the miniature of the smooth 

 depression at proximal end of tibia III; tarsus III with few spines. 

 Tibia, mttat'-irsus and tarsus of II and I. and tibia and tarsus of palpus, 

 with dense row of short, strong, Mack s- pines on anterior and posterior 

 sides 



Sternum with f.w hairs on c^ge, longer than broad, in one specimen 

 6.25 mm. by 5.75 mm., Sharply angled between the articulation of the 

 coxse; greatest breadth between coxae II and III. 



Maxilla? longer than coxa I ; at edge of base a clustered row of short, 

 strong, brown spines; densely hairy with rufous hairs on anterior edge. 

 Labium broadest at base, distal end truncate, anterior angles well 



