112 collembola from northern sarawak. 



Subgenus Acanthurella. 



3. Acanthurella zonata n. sp. 



Diagnosis. Ant. I 1 : 0.39. 



Ant. I: II: III: IV=1: 1.66: 1.33: 2.06. 

 Abd. Ill: IV=1 : 5.43. 

 Maniibr : Mucrodens = l: 0.88. 



Mesonotimi strongly protruding, slightly curved backwards. 

 Eyes 8 + 8, the two proximal ones much smaller. "Maculae'" 

 nearly round. Antorg. II consisting of 3 or possibly 4 free 

 staffs. Ant. Ill I have not been able to trace, but probably 

 it consists of two staffs within a fold as usual. Internal 

 margin of claws with a proximal double tooth and a distal, 

 simple one. Pseudonychids indistinctly developed, but seem 

 to have a lateral tooth at the base. The empodial appendix 

 in all the three pairs of legs stilette-shaped. The difference in 

 size of the different pairs of legs very little pronounced. They 

 reach to the distal tooth or slightly over it. There is a tibio- 

 tarsal and distinctly incrassate sensitive seta. The spines of 

 the furcula appear already on the lower parts of manubrium. 

 They are of different size and distinctly serrate. They alter- 

 nate here with very robust serrated setae, which appear to be 

 double contoured. The joint is also covered by long, slightly 

 curved, feather-like setae on the ventral side. Of dental 

 spines there are only some few ones left above. They seem 

 to vary in size. Mucrones bidentate, with basal spine. 

 Scales large, thin, rounded in the free end, with a sculpture 

 of sometimes very small, indistinct striae. On the antennae 

 they are noticeable to the second joint. Between the abdomi- 

 nal segments and on the upper side of mesonotum there are 

 groups of extraordinarily long scales. Under mesonotum 

 there is a group of protruding, robust, unsculptured sharply 

 pointed setae. 



Ant. I, II, densely covered by feather-shaped setae of 

 normal size, among which also some longer ones seem to be 

 directed outwards at the sides of both the internal joints. On 

 Ant. Ill, TV, the feather-shaped setae become smaller and 

 transparent and are placed more distant apart from each other. 



Coloration. Head yellowish. Ant. I and II slight reddish, 

 III and TV are whitish, the former with a distal blue spot. 

 Mesonotum is blue pigmented with oblique stripes and scat- 

 tered dots. A blue girdle is noticeable extending from 

 mesonotum to Abd. III. There is also an obliquely placed 



