432 Mr. R. I. Pocock on new 



than dorsum of segments, their anterior borders convex, but 

 not sharply shouldered at base; posterior border also lightly- 

 convex, at all events at the base, where in the posterior half of 

 the body it is distinctly shouldered. Pores about six diameters 

 from the lateral margin of the keels. 



Coindatory foot (as in fig. 4, 4 a), when viewed from below, 

 ending in two prongs, one above the other at the base, 

 whence they diverge, the inferior prong curving upwards, 

 outwards, and backwards, the superior upwards, inwards, 

 and backwards. 



Measurements in milUmetres. — Total length 78, width 15'5; 

 width of second segment 11'3, of fifth 15'0. 



Loc. Sandakan {D. Cator). 



Stenoniodes angulicolUsj sp. n, 



^ . — Closely allied to S. Catorii, but not so black in colour, 

 being browner. 



Keels of the first segment more elevated, projecting forwards, 

 so that the anterior border between them is distinctly concave. 



Prominence at the base of the keels on the other segments 

 low and relatively but little noticeable as compared to Catorii. 



Copulatory feet practically as in Catorii. 



Measurements in millimetres. — Total length 73 ; width of 

 second tergite 10'5, of fifth 15'2. 



5 , — Larger than male and more convex, with smaller keels, 

 those of the first tergite not being produced. 



Measurements in millimetres. — Total length 80 ; width of 

 fifth segment 17, of caudal process 4. 



Loc. Sandakan {D. Cator). 



Stenoniodes Creaghii, sp. n. (Figg. 5, da, p. 431.) 



Smaller than Catorii, but very closely resembling it in 

 colour (except that the white border on the keels is broader, 

 being distinctly traceable on the first tergite) and structure, 

 the tergites presenting the same smooth prominence at the 

 base of the keels ; the keels, however, of the first tergite are 

 distinctly more produced, though not so much as in anguli- 

 col lis; and the copulatory organ is siiorter, with the pi'ongs a 

 little difterently disposed, as shown in figg. 5, 5 a. 



Measurements in millimetres. — Total length 67 ; width of 

 second tergite 11, of fifth 13. 



$ . — Like the male in colour ; rather more granular than 

 the female of angulicollis, the anterior rows of tubercles being 

 distinct on all the tergites. 



Measurements in millimetres. — Total length 69; width of 

 fifth segment 13'5, of caudal process 3*5. 



