1901.] MYBIAPODA OE THE " BKBAT EXPEDITION." 517 



bristles at the edges. The deep frontal sulcus does not quite 

 reach to the level of the antenna?. Antennas short. 



1st tergite. Anterior margin very slightly indentate, straight, aud 



furnished with a ridge with tubercles, but the tubercles are not 

 very prominent or very distinct ; the furrow behind the ridge is 

 carried out into a depression which is bluntly triangular, and 

 extends to near the middle of the tergite. The posterior margin 

 is straight with some large tubercles on it, but, as in the anterior 

 margin, the tubercles are confused and not prominent. The sides 

 of the tergite are rounded-off so as to make a blunt point nearer 

 the anterior than the posterior margin. The tergite is about the 

 same breadth as the head, the curve of the head being continuous 

 with that of the tergite. 



2nd tergite. Is prolonged downward and forward so as to form 

 an open V embracing the first tergite ; the ends are rounded so as 

 to form blunt points. On the posterior margin there is a short 

 ridge covered with tubercles. 



3rd tergite less prolonged forward and backward than the 2nd. 

 The lateral inargm is distinct and makes an acute angle with the 

 anterior, though the point is rounded-off. 



-1th tergite. A trace of shoulder is apparent. 



oth tergite. The shoulder is apparent, and the anterior angle is 

 less acute. 



6th tergite. Anterior angle nearly a right angle. 



12th tergite. The minute teeth are visible on the posterior 

 margin of the keel, those on the anterior margin are not visible 

 distinctly till the 15th. After the 15th the keels begin to be 

 directed backward, and there is a small tooth on the posterior 

 angle, but this is never very big. 



AaaJ tergite. The anal tergite shows only four of the longitudiual 

 ridges in place of the six possessed by most of the other species. 

 The sterna are smooth, though examination with a lens shows 

 numerous small granules. 



Platvriiacus malax c ax rs Peters. (Plate XXXII. tig-. <i:i 65, 

 ii8, 87. 88.) 



Prom large cave. Bukit Jala, Jail District. 



Two perfect specimens and one broken, all female. 



Length 80 mm. Length of antenna: 8 mm.; distauce between 

 bases of antenna? barely 2 mm. 



nun. 



Width of 1st tergite 8 



2nd „ 19 



3rd „ M 



4th .. 12 



5th ., 1 I 



Colour coffee-brown at edges of keels and anal tergite. sterna 

 and legs same colour but lighter. 



Head. Cpper Lip with median indentation, three stiff bristles on 



linn. 

 AVidth of 6th tergite 13 



16th , 



12 



17th . 



. 11 



L8th , 



L0 



19th . 



g 



