325 



distal or fourth segment is spiniform , i.e. stout at the base then 

 abruptly narrowed, the distal three fourths tapering gradually to 

 a point. 



Length 10.5. 



This species resembles G. albicornis, G. camifex, G. pallida, and 

 G. concolor l ) in having a very large number of striae on the 1 st 

 dorsal plate. From all of them it differs in being almost wholly 

 fuscous, and, in addition, from the first three it may be recognised 

 by the impressed and strongly emarginate anal tergite of the male, 

 by the absence of a process on the first segment of the copulatory 

 foot, by the presence of but one process on the second segment and 

 by the much less curved and more slender fourth segment. 



Family zephroniidae , nov. 



Sphserotheria , Brandt, Bull. Mose. 1833, p. 198. 



Antennae widely separated , situated completely at the sides of the 

 head and lodged in deep sockets. Eyes composed of a circular mass 

 of ocelli. There is no sensory organ on the face between the antennae 

 and eyes. 



Gnathochilarium with the mentum and lingua not separately recog- 

 nisable, but represented by a single nearly parallel-sided plate; the 

 cardo on each side is very large, larger than the stipes which is 

 furnished with only a single mala. 



Thirteen distinct tergal plates; and on each side eleven distinct 

 pleura? bearing the ambulatory limbs; the pleuras of the 1 st and the 

 2nd segments obsolete. Twenty-one pairs of legs in the Q, twenty- 

 three in the cT; terga 1—4 with a single pair each, 6 — 12 with two 

 pairs each; anal tergite with a distinct pleura on each side and 

 furnished with 1 pair 2 ) of legs in the Ç and with three pairs in cf. 

 The anal tergite apparently representing three segments; its anterior 

 portion has a distinct pleura on each side and is often defined by a 

 notch on the lateral margin. The anal valves apparently formed as in 

 the Glomeridœ, but in the Ç there is a distinct median anal sternite 



1) Pocock, Ann. Nat. Hist. 1S89, p. 474, from Borneo. 



2) It is very difficult to determine the exact nature of the correspondence between 

 the legs and the pleurœ. I have not succeeded in satisfying myself that my determination 

 is correct. 



