144 DR - K « w - VERHOEFF ON BRACHYCHAETEUMA, 



to say, with the fifth joint not strikingly enlarged. Inner 

 palpus of the gnathochilarium with only 2 + 2 freely pro- 

 jecting sense organs. 1 The anterior part of the mentura, that 

 is the triangular portion which is posteriorly inserted between 

 the lamellae linguales, is plainly separated from the rest of 

 the mentum (promentum) by a transverse suture. Eighth 

 abdominal segment of the male with two pairs of coxal sacs, 

 which belong to the eighth and ninth pairs of legs. These 

 sacs contain a fine-grained sperm. The eighth and ninth 

 pairs of legs are otherwise of simple structure ; even the 

 femora bear no kind of process. First to seventh pairs of 

 legs in the male likewise lacking conspicuous characters ; on 

 the third to the tenth the sucker-discs are wanting altogether. 

 Pseudoflagella are lacking on both pairs of gonopods. The 

 anterior gonopods are placed upon a depressed transverse 

 sternite, and consist of syncoxite and telopodites. The syn- 

 coxite is widely expanded in the middle line, and exhibits 

 three processes in front and two behind. Anteriorly it is 

 separated from the telopodites by a wide transverse pocket. 

 The telopodites resemble a couple of drinking horns ; they are 

 hollowed out in the form of a sac in the basal half, and come 

 into contact with one another in the middle line. The posterior 

 gonopods are likewise placed upon a depressed transverse 

 sternite. The latter, however, possesses tracheal pockets 

 with tracheae and stigmata. The posterior gonopods are 

 conspicuously three-jointed, the joint following upon the coxa 

 being directed backwards, and the last joint outwards. The 

 coxites possess no special internal characters. 



Female unknown. 



Relationships of the Brachychaeteumidce to other Families 

 of the Ascospermopho?'a. 



The Trachysomidae, Chordeumidae, Caseyidae and Verhoef- 

 fiidae are easily distinguished from our new family by the 



1 In reference to the mouth-parts of the Diplopods, cf. K. W. 

 Verhoeff, Die Diplopoden Deutschlands, parts 2-4, general introduction, 

 etc. ; Winters Verlag, Leipzig, 1911-1912 



