298 ME. E. I. POCOCK ON THE AEAOHNIDA AND MTEIOPODA 



The typical form from the Canary Islands appears to be of a 

 uniform olivaceous colouring, and to offers none of the strongly 

 contrasting patterns characteristic of the subspecies inhabiting 

 Persia, Arabia, and Socotra. Examples of the subspecies Bal- 

 fouri were evidently referred to by Karseh as Collaria morsitans 

 (Abh. nat. Yer. Bremen, ix. p. 67, 1884). 



DiPLOPODA. 



Spieosteeptus aeabs, sp. n. 



$ . Colour. Legs and antennae clear reddish yellow ; head 

 infuscate above, fading off into ferruginous below; segments 

 deep black ; the lateral portions of the 1st tergite obscurely 

 ferruginous ; the anterior half of the segments ferruginous or 

 ochraceous. 



Head. Frontal region slightly sculptured, without a definite 

 striate ridge beneath the edge of the 1st tergite ; frontal sulcus 

 deep ; faint trace of a stria between the inner angles of the 

 eyes ; a small pit-like depression on the inner side of antennal 

 socket ; lower half of head strongly wrinkled, sculptured with 

 anastomosing strise and sulci ; labral border with a deep, uui- 

 dentate, angular excision. Distance between eyes about equal 

 to their long diameter ; eyes composed of about 7 transverse 

 rows of ocelli. Antennae extending laterally to the end of the 

 3rd segment ; segments 2-6 gradually decreasing in length. 



1st tergite minutely punctulate above, its lateral portion ex- 

 tending below the lower border of the 2nd ; its posterior border 

 emarginate above the posterior angle, which is rounded; the 

 anterior border much more deeply and widely emarginate above 

 the angle, which is convexly rounded ; the lower portion of the 

 segment covered with cristules as shown in the figure (p. 299). The 

 rest of the terga minutely punctulate ; the transverse sulcus com- 

 plete on all from the 2nd backwards, lying in a shallow depression ; 

 the area in front of it closely covered with transverse cristules 

 which behind become stronger and more widely separated from 

 each other ; the area behind the sulcus longitudinally striate up 

 to the pore. Pores minute, beginning on the 6th segment some 

 distance behind the sulcus, which is lightly sinuate opposite to them. 



Sterna quite smooth; grooves short. Anal tergite with a very 

 short triangular process in the middle of its hinder border, a 

 shallow transverse depression in front of it. Valves with strongly 



