1901.] MYBIAPOOA OF THE " SEE AT EXPEDITION." 521 



part they are parallel. The tail is yellow, with a median hand 

 of the ferruginous ground-colour. The anal valves arc dark- 

 coloured. 



Head with indented upper lip; surface covered with short stiff 

 hairs. Frontal furrow well marked. The small circular pale 

 spots ahove the antennae are very conspicuous. Antenna' 

 covered with short fine hairs. 



1^ terf/ite nearly semicircular in shape, very little keel. The 

 margin is higher than that of the second, which it partly overlaps. 

 The pale streaks are as clearly marked in the 1st somite as in 

 the others, but anteriorly they converge and join at the extreme 

 anterior edge. 



2nd tcrgite has the posterior angle just marked, but not acute 

 like the 3rd. 



3rd tergite. Posterior angle acute and prolonged into a spine. 



Pleural heels not much developed, distinguishable on the first- 

 three somites and dying away about the fifth. 



There is no abrupt transition between the anterior somites and 

 the rest of the body, but the somites increase gradually in size. 



The keels are small, rounded anteriorly, and sharply spiniform 

 posteriorly. The spine, however, does not surpass more than the 

 half of the cylindrical part of the next somite. The sternum is 

 smooth and without furrows in the cylindrical part of the somite, 

 but has a median longitudinal furrow dividing the bases of the 

 legs including the last pair. The sub-anal plate and valves have 

 the usual tubercles and setas. The tail has the form of a trun- 

 cated cone with two small tubercles at the two posterior comers : 

 also two tubercles and seta? a little before the end of the tail. 



Stbonotlosoma coabotatum Saussure. 



From Gunong Inas, Perak. 



Stroxgylosoma. betosum Pocock. 



A young animal with only 19 somites. from Tapelung, 

 Patalung State. 



Genu- DOBATOWOTUS Pocock. 



I >OB vtonotcs CAVEBNIOOLA, sp. nov. (Plate XXXI. lig. 54, and 

 Plate XXXII. ligs. 69-71, 7."-. 74, 78, 82.) 



Prom Ghia G-lnf, dark region of cave, Bukit Grib, Raman Ihs- 

 tiict, and from Gua Tanan, Patani State. 



Bears a great resemblance to the species described by Pocock 

 as armatus. 



Colour light brownish yellow throughout. Legs, sterna, and 

 antennsa lighter. 



The head and antennas *aa in Pocock's species ; the sixth joint 

 of the antennsa is much the longesl joint. The maxilla? (Silveetri) 

 of the hypostoma are provided with two long appendices raaxil- 

 lares, each with aboul ^ix spikes at the end. The external margins 



