HUBBA.RDIIDJE. 119 



Sexual characters. Males, where known, differing from females 

 in having the postanal sclerite expanded and spatulate in its distal 

 half, this organ in the females being unexpanded and subcylind- 

 rical ; chelae in male also frequently larger than in the female and 

 armed with spines. 



Habits. Occur beneath stones, the debris of leaves, &c. 



Distribution. Tropical West Africa ; Osylon, Burma, and the 

 Bismarck Archipelago (New Britain) ; California ; Venezuela. 

 Also introduced with exotic plants into conservatories in Europe. 



Further collecting will no doubt fill up the apparent gaps in the 

 distribution, and greatly increase our knowledge of the range of 

 this interesting little group. 



Family HUBBAKDIIDvE. 



Hubbardiidie, Cook, Proc. Ent. Soc. Wash, iv, p. 249, 1899. 

 Schironotidae, Thorell, Ann. Mus. Genova, xxvi, p. 358, 1888. 



Characters of the suborder. 



The Indian genera may be tabulated as follows : . 



a. Posterior plate of carapace undivided or at 



mot with a narrow sutural line SrmzoMtrs, p. 119. 



b. Posterior plate of carapace consisting of a, dis- 



tinct right and left half, or divided by a 



narrow pellucid longitudinal area TRITHYREUS, p. 121. 



Genus SCHIZOMUS, Cook, 



Nyctalops, O. P. Cambridge, A. M. N. H. (4) x, p, 410, 1872 (nom. 



Sraeocc.). 

 izonotus, Thorell, Ann, Mus. Genova, xxvi, p. 358, 1888 ; id. 

 op. cit. xxvii, p. 554, 1889; Pocock, A. M. N. II . (6) xi, p. 4, 

 1893; Kraep. Abh. Ver. Hamb. xv, p 51, 1897: id. Tier,*., 

 Scorp. etc. p. 233, 1899 (uom. prseocc.). 

 Schizomus, Cook, Proc. Ent. Soc. Wash, iv, p. 249, 1899. 



Anterior dorsal plate of cephaloikorax elongate, broad in front, 

 narrowed behind, its anterior border armed with a long sharp beak- 

 like process the length of which is greater than its basal width ; 

 posterior plate not divided into a distinct right and left half 

 separated by a definite pale membranous area, but uniformly pig- 

 mented throughout and at most only marked with a very tine 

 median sutural line ; no additional sclerites intercalated between 

 this plate and the anterior portion of the carapace. No eyes. 

 Chelcc of c? dentate beneath ; caudal sclerite cylindrical at base, 

 its distal half expanded into a heart-shaped plate : chelce 

 of 2 unarmed beneath ; caudal sclerite irregularly cylindrical 

 throughout. 



Type, S. crassicaudatus, O. P. Cambr. 



Distribution. Ceylon. 



