377 



The three species of this genus obtained by Dr. Max Weber may 

 be recognised by the following table: 



a. The 1 st segment without a trace of keels above its lateral border; 

 the 2 nd and 3 rd segments smooth and not carinate above. The keels 

 on the rest of the segments entire, the small crests upon the 

 posterior half of the cylindrical portion of the segments nearly obsolete 



cavernicola, sp. n. 



b. The 1 st segment with traces of two or three small keels above 

 its lateral border; the 2 nd and 3 rd segments weakly keeled above. 

 The keels of the rest of the segments distinctly notched ; the cristules 

 on the cylindrical half of the segments stronger. 



a 1 . Head fuscous above, the infero-lateral area of the segments 



scarcely flavous , the keels more dentiform posteriorly 



dentata sp. n. 



b\ Head and infero-lateral area of the segments flavous: keels 

 not dentiform posteriorly calva, Pocock. 



74. Cambala calva, Pocock. 



Ann. Mus. Genov. XXXIII, p. 391. 



Sumatra: Fort de Kock. Several specimens. 



Closely allied to C. cavernicola; but smaller, with fewer somites 

 and with the head, first tergite and antennas pale, the pale tint of 

 the lower surface being also more sharply defined. Moreover the second 

 and third tergites are evidently carinate above , the carinas taking the 

 form of a posterior series of tubercles. The keels of the rest more 

 distinctly divided by the transverse sulcus, but not markedly produced 

 beyond the borders of the tergites. 



No. of somites up to 66. 



Length about 17 mm. 



75. Cambala cavernicola sp. n. 



Sumatra: Ngalau Cavern near Pajacombo. Many examples. 



Colour upper half of head and of body deep brown or black , lower 

 surface of head, of body, anal valves, legs and antennae flavous, 

 the two latter being lightly infuscate. 



Head smooth, convex above, flatter below, not sulcate. Eyes con- 

 sisting of a single row of 6 ocelli, running parallel with the border 

 of the first tergite. Antennœ normal. First tergite smooth, not carinate 

 above and only very slightly carinate along its lateral border which is 



