78 AN EXPEDITION TO MOUNT KINA BALU. 



ternally, and its length is only about that of prothorax and 

 mesothorax tog-ether. The width of the first segment is two- 

 fifths that of the metathorax, that of the last segment one-fifth. 

 The prothorax bears dorsal ly two tubercles, about equidistant 

 from the middle line and the side, and slightly nearer the pos- 

 terior than the anterior margin. The mesothorax bears two pairs 

 of tubercles, an anterior and a posterior, the posterior pair being 

 situated near the centre of each half of the segment, and the 

 anterior pair at equal distance from the posterior pair and the 

 anterior margin of the segment, and nearer the middle line ; the 

 metathorax also has two pairs of tubercles, placed like those of 

 the mesothorax. The first eight abdominal segments bear three 

 pairs of spines each, viz. one pair of lateral ones (shown in Gahan's 

 figure), and two pairs of ventral ones ; the last segment has 

 lateral spines only. 



Colour: the thoracic tubercles are black, and the tips of the 

 ventral spines are yellowish. The rest of the body is uniformly 

 deep chestnut brown. 



Size : length of the largest Singapore specimen 41 mm. ; of 

 the largest Perak specimen 49 mm. ; greatest width (metathorax) : 

 21 mm. in both cases. 



Hab : mountainous jungle of Singapore and Malay Penin- 

 sula, Rare. 



The Kina Balu ktrva differs from this one (1) in the propor- 

 tions of its dimensions, the thorax being narrower, and the abdo- 

 men longer and broader ; (2) in the position of the thoracic 

 tubercles, which are always placed in one row and close to the 

 posterior margin of the segments; (3) in the presence of ab- 

 dominal tubercles, viz., two in each of the first eight abdominal seg- 

 ments, also placed close to the posterior margin of the seg- 

 ments ; (4) in the structure of the antennae, which, although of 

 the same size and shape, and having also a narrow chitinous ring 

 round their base, have the crown-like chitinous structure at their 

 distal end divided, not into four, but into 12 narrow finger-like 

 lobes ; (5) its colour, being of a lighter chestnut brown, with an 

 orange line along the sides of the thorax, the tubercles and feet 

 also being orange. The number of thoracic tubercles and ab- 

 dominal spines is, however, the same in the two species. 



No luminosity was observed in either species, although I 



