426 MR. A. G. BUTLER ON THE GENUS ACROSOMA. [Apr. 1, 



41. ACROSOMA MATRONALE. 



Acrosoma matronale, Koch, Arachn. xi. p. 68, pi. 376. f. 887 

 (1845). 



" Mexico " (Koch). ? B.M. 



We received this species in a miscellaneous collection chiefly from 

 India and Arabia ; so that it is impossible to know where it came 

 from. 



42. Acrosoma aureolum. 



Acrosoma aureolum, Koch, Arachn. iii. p. 60, pi. 93. f. 213 

 (1836). 



" Brazils " (Koch). 

 Allied to A. matronale. 



43. Acrosoma bifurcatum. 



Acrosoma bifurcata, Hahn, Arachn. ii. p. 65 (1834). 

 Epeira sexspinosa, Hahn, Monogr. der Aran. iii. pi. 4. f. B. 

 Acrosoma sexspinosa, Hahn, Arachn. ii. pi. 68. f. 158 (1834). 

 "Surinam, Brazil" (Hahn). 

 A peculiar-looking form, allied to A. jissispinum. 



44. Acrosoma reduvianum. 



Plectana reduviana, Walckenaer, Apt. ii. p. 201. n. 78 (1837- 

 39) ; Abbot's Georgian Spiders, f. 49. 



? A. digitatum, Koch, Arachn. vi. pi. 210. f. 523 (1839). 



New York. B.M. 



45. Acrosoma bisicatum. 



Plectana bisicata, Walckenaer, Apt. ii. p. 192. n. 64 (1837-39). 

 Sp. ead. ? Brazil. B.M. 



46. Acrosoma fissispinum. 



Acrosoma fissispinum, Koch, Arachn. iii. p. 54, pi. 92. f. 208 

 (1836). 

 Brazil. B.M. 



47. Acrosoma elongatum. 



Acrosoma elongatum, Kevserliug, Sitzungsber. der Isis zu Dresden, 

 p. 75, pi. 2. f. 8 (1863, edit* 1864). 

 "Bogota" (Keyserling). 

 A curiously shaped species of the A. fissispinum group. 



48. Acrosoma duplicatum. 



Plectana duplicata, Walckenaer, Apt. ii. p. 194. n. 68 (1837-39). 

 "Brazil" (Walckenaer). 

 Apparently allied to A. fissispinum. 



49. Acrosoma asciatum. 



Plectana asciata, Walckenaer, Apt. ii. p. 194. n. 69 (1837-39). 

 " Brazil " (Walckenaer). 

 Allied to A. duplicatum. 



