CHERNETIDIA. 833 



in Spain ; Hemiblossia 1 species in S. Africa ; Gluviopsis 2 species in 

 the Old World ; Saronomus 1 species from Venezuela ; Procleobis 

 and Pseudocleobis have each one species from S. America ; Amtno- 

 trecha with 7 New World species ; Mummucia 1 S. American species. 

 Sub-fam. 4. Eremobatinae, Eremobates the single genus has 18 

 N. American species. 



Sub-fam. 5. Karschiinae. Ceroma with 6 species extends from 

 British East Africa to the Cape ; Gylippus 4 species Syria, Persia 

 and Central Asia ; Barrus 1 Egyptian species ; Eusimonia 5 species 

 North Africa to Central Asia ; Karshia 4 species Transcaucasia to 

 Central Asia. 



Fam. 3. He xisopodidae. The 4th leg has no claws, some of the segments 

 of the limbs spinous ; the tarsi of all the legs is one-jointed, no toothed 

 plate over stigmata, flagellum filiform. This family contains but one 

 genus Hexisopus with five species all confined to South Africa. 



Order 6. CHERNETIDIA (PSEUDO-SCORPIONIDA).* 



Small tracheate Arachnida with chelate chelicerae and pedipalps ; 

 abdomen segmented, without waist, with two pairs of stigmata and 

 spinning organs ; postanal tail absent ; no eyes or 2 or 4 

 simple ones. 



The Chernetidia (Figs. 547, 548) are small neat-looking 

 Arachnids ; a quarter of an inch in length is their outside limit 

 and as a rule they do not surpass an eighth. They are uniformly 

 coloured as a rule and are mostly brown or chestnut. 



The cephalothorax (prosoma) has 

 either no traces of segmentation or at 

 most one or two transverse striae. The 

 two or four eyes when eyes are 

 present are placed near the lateral 

 edge. The abdomen (opisthosoma) has 

 twelve segments with eleven terga, tin- 

 last two being fused, and nine sterna, 

 the last four being fused ; the terga 

 may be in right or left halves separ- 



i p i ii ji -jji FIG. 547. Obisium trombidioides. 



ated from each other in the middle g t pedipaip. 



line by a membranous skin. The ab- 

 domen is capable of considerable extension, especially when the 



* Bernard, J. Lin. Soc., London, xxiv, 1894, p. 410. Tr. Lin. Soc.. 

 London, Ser. ii, vi, 18947, p. 305. Croneberg,.Z?uM. Soc. Moscow, Annee 

 1888, 1899, p. 416., Pickard-Cambridge, Monograph of the British Species 

 of Chernetideae, 1892. 



z in 3 H 



