124 COLLEMBOLA FBOM NOETHERN SARAWAK. 



armed with a double row of simple spines and covered with 

 scales and thin feather-shaped Petae. It seems impossible to 

 fix the lower limit of the rows of ypme as the spines downwards 

 become bigger and go over into long spine-like setae ; mucrones 

 short and broad, the dorsal position roimded above ; from 

 here an apical blunt tooth and two ventral ones, of which the 

 lower one is broad and lamella-shaped, are seen protruding; 

 further down there is a slightly • curved basal spine ; lateral 

 appendix indistinct. 



Coloration. In specimens preserved in alcohol the ground 

 colour seem to be dark honey-yellow. The markings consist 

 of a faint black margin on the ventral margin of mesonotum 

 and strong, irregular borders on or near the posterior margins 

 of Abd. IV and V. The ventral side of the big apical segment 

 is dark brown as also the whole of the apical segment. 



On the living animal Dr. Mjoberg has, according to a note 

 in the tube, observed two silver-shining greenish lateral bands. 

 Also the interstices between the hau' tuffs are silvery shining. 



The length of the animal from the tip of mesonotum to the 

 furcula is 3 — 4 mm. 



Locality. Mt. Duht, N. Sarawak, 3000 feet. 



Biology. In the above-mentioned note Dr. Mjoberg 

 remarks, that "this species strikingly imitates certain small, 

 narrow spiders by stretching straight forwards the lightly 

 coloured antennae, which are constantly moved, thereby giving 

 exactly the impression of a spider and its palpi. It was 

 observed on the leaves of a shrub, displaying in the direct 

 sunlight, an extraordinary habit of a Podurid." 



Remarks. Other species belonging to this genus are 

 Paronella pliimicorjiis (Par.) D. fasciatus Imms and D. longi- 

 ceps recently described by Handschin. Judging from the 

 description of the mucronal segments of the latter species, it 

 seems to come nearest to the Mt. Dulit species, but differs, 

 however, by the monstrous head. 



Though the species just mentioned in their organisation show 

 many peculiarities in common, justifying the creation of a 

 separate genus (as done by Imms) the choice of name seems to 

 me a bit peculiar, as there is no affinity whatsoever with the 

 genus Dicranocentrus. No doubt the discussed forms come 

 nearest to the species of the genus Aphyusa. This is evident 

 from the shape of the scales but above all from the appearance 

 of the mucronal segment of the species described by Imms. 



