A NEW AND ANNEOTANT TYPE OE CHILOPOD. 423 



Craterostigmns tasmanianus, sp. n. 



Measurements in mm. — Total length from anterior 

 border of cephalite to posterior border of twenty-first tergite 

 S7, width across coxal plate of toxicognaths 3" 8 ; length of 

 cephalite 3'4, width 2*2 ; length of antenna 9'5^ of posterior 

 leg 12 ; length of last tergite 2-4, width 2. 



Colour yellowish brown, with the cephalite and toxico- 

 gnaths darker reddish brown. Integument sparsely hairy 

 and punctured. 



Cephalite pai-allel-sided, its posterior border convexly 

 rounded; frontal area with its sides converging between the 

 eyes and the base of the antennae. 



Eyes some distance behind the antenna; frontal sulcus 

 projecting posteriorly between the eyes, with strongly convex 

 backAvard curvature. 



Antennae about one fourth the length of the body and 

 head, rather less than three times as long as the head ; 

 the segments hirsute, especially towards the distal end of 

 the appendage, subcylindrical, longer than wide, the first 

 segment strongly constricted in its basal half. 



Prtecoxal processes of toxicognaths long, armed apically 

 and externally with seven teeth. Inner side of femur and 

 femoral process armed with about five teeth, the proximal 

 of which lies far back just in front of the suture marking 

 the line of union of the trochanter and the femur. 



Basal plate with posterior angles rounded, 



Terga without longitudinal grooves, with posterior border 

 straight, posterior angles rounded and unthickened margins; 

 the last tergum, and to a lesser degree the last but one, 

 granular ; the last with a weak longitudinal lateral crest in 

 its anterior half, its posterior border sinuous, its middle third 

 slightly and convexly produced. 



Sterna without grooves, those of the posterior somites 

 granular, the granules, as in the case of those on the terga, 

 formed by the elevations round the setiferous pores ; sterna 



