118 COLLEMBOLA FROM NORTHERN SARAWAK. 



Antorg. Ill consisting of two staffs within a wavy skin-fold. 

 Tibiae two-jointed, the tibio-tarsal sensitive seta long and 

 incrassated to^^ards the apex. Opposite to this and on the 

 underside of the joint there is a single long seta among the 

 serrated ones. 



Claws with a proximal donble-tooth and two distal ones, 

 psendonychia big with a lateral appendix at the base ; the em- 

 podial appendix obliquely cut off, the ventral lamella ex- 

 tremely thin and distinctly serrated. 



Denies unarmed, mucrones bidentate, with basal spine. 



Scales extended, pointed, with elongate striation. 



Hairs and scales only partly preserved. Some scatterec 

 slightly curved ones, flattened towards the apex, can be seen 

 near the anterior margin of mesonotum. Genae thinly cover- 

 ed with long fine hairs, antennae and legs with long setae, 

 directed forwards. There are also some excessively long 

 feather-shaped setae on the femoral joints anterior part. The 

 apical segments with several pairs of long feather-shaped seta. 

 Apical appendix densely covered with scales and long serrated 

 setae. 



Furcula richly hairy. At the joint between the manubrium 

 and dentes the hairs grow thicker and are arranged in groups. 



7. Eptmetrura mirabilis n. sp. 



Coloration. The preserved specimen is yellowish-white 

 with some odd beautiful blue dots on the antennae and the 

 legs. 



Length of body (except head) 3 mm. 



Locality. One single specimen from Mt. Dulit, 5000 feet, 

 together with Lepidosira montana n. sp. 



Remarks. This very peculiar form approaches the genus 

 Lepidocyrtus by the excessive development of the second 

 thoracic segment but reminds one in all other points of Sira, 

 as for instance in the type of scales, the two-jointed tibiae, the 

 claws, etc. By the finger-shaped apical appendix it occupies 

 an independent position. First T took this organ for an ab- 

 normall}'' extended part of the apical segment itself. From 

 this it is, however, separated by a distinct joint. A similar 

 appendix has been described by Imms from another Collembola 

 form which he calls Heteronuiricus crucifer, which, however, 

 has entirely differently shaped antennae and abdomen. 



