86 Mr. E. I. Pocock on 



Genus ACANTHOSCURRIA, AusS. 

 Acanthoscurria antillensis, sp. n. 

 ? Mygale Blondii, Walck. Ins. Apt. i. p. 210 (1837) (in part). 



$ . — Integument covered with hairs of a rich olive-brown 

 hue, a pair of pale patches (probably pink in colour when 

 fresh) on the head ; legs marked with indistinct pale longitu- 

 dinal lines, but scarcely distinctly banded at the ends of the 

 segments ; bristles on legs greyish in colour, not long and not 

 numerous. 



Carapace with the cephalic area noticeably higher and 

 narrower than in A. geniculata and A. Brockhhursti, as long 

 as patella 4- tibia of fourth leg, a little shorter than tiiose of 

 first leg, and a little longer than protarsus + ^ the tarsus of 

 the fourtli, shorter by j of the tarsus than the patella, tibia, 

 and tarsus of palp, and shorter than the femur + ^ the patella 

 of the first ; distance from the fovea to the anterior border 

 less than protarsus of fourth and barely exceeding patella + 

 tibia of palp. 



Eyes of anterior line subequal, subequally spaced, medians 

 about a diameter apart, posterior median eyes close to the 

 posterior laterals, much closer than to the anterior medians; 

 the two laterals less than half a diameter apart. 



Legs 4^ 1, 2, 3 in length ; spines on anterior tibite very 

 short, protarsus of first spined only at apex ; fourth leg about 

 three times as long as carapace ; third leg less than two and 

 a half times as long ; palp more than one and a half times 

 as long. 



Stridulating-organ consisting of about 25 long plumose 

 spines on the trochanter of the palp and of long plumose 

 and simple acuminate spines on the first leg. Inner side of 

 coxa, trochanter, and femur of first leg and outer side of the 

 corresponding segments of the palp clothed with simple hairs 

 and bristles. 



Measurements in niilUmetres. — Total length 55 ; length of 

 carapace 24, from fovea to anterior edge 17; width 21; 

 length of first leg Q,b, second 60, third 57, fourth 69 ; patella 

 -J- tibia of first 24, of fourth 23 ; protarsus of fourth 19. 



Loc. Lesser Antilles: St. Lucia {G. A. Ramage and Miss 

 Alexander) ; Point Michel, in Dominica {G. A. Uamage). 



This species has a higher narrower head than the South- 

 American species of the genus with which I am acquainted. 

 In the length of its legs it resembles A. geniculata. 



It is, perhaps, to this species that must be referred the 

 specimen from bt. Vincent, and possibly the one from Mar- 



