90 



cous. In maculatus the frontal region of the céphalothorax is mesially 

 fulvous and the legs palpi and tail are throughout variegated. In for- 

 mosus, however, the frontal region and the brachium are entirely 

 fuscous and the distal half of the tail is fuscous or rufo-fuscous and 

 not variegated. Associated with these differences in colouration there 

 are certain other characters — such as a smaller number of pectinal 

 teeth (11 as opposed to 18), a distinctly thicker caudal vesicle etc. 



From melanodactylus it also differs in colouring , the trunk in this spe- 

 cies being of a more uniform tint, the humerus being wholly pale and 

 the brachium bearing only one or two fuscous spots; moreover the three 

 proxinal caudal segments are uniformly ochraceous above. Again associ- 

 ated with the colouring certain structural features may be noticed. Thus 

 melanodactylus has a much more slender vesicle and a shorter aculeus, 

 while the terminal granule of the superior caudal keels is spiniform. 



From assamensis it differs in the colouring of the palpi as it does 

 from maculatus , although closely approaching the former in the colours 

 of its tail and céphalothorax. In assamensis, however, there are 16 

 pectinal teeth, the visicle is slender, the terminal granule of the 

 superior caudal keels of at least the 2 nd and 3 nd segments is spini- 

 form, the median keels on the last abdominal sternite are obsolete 

 and the whole animal is much less strongly granular. 



Pam. SCORPIONIDAE. 

 sub. fam. Iurini. 



Chaerilus. 



5. Chaerilus variegatus, Simon. (PI. VI. fig. 4 — 4a). 

 Simon, Ann. Soc. Ent. Fr. (5), VII p. 239, pi. Ill, fig. 13 (1877) and 



X, p. 381 (1880). 

 Karsch, Mitth. Munch. Ent. Ver., 1879, pp. 107-108. 



Three specimens, two adult and one immature, from Tjibodas in Java. 



Since, so far as I know, no measurements of a specimen of this 

 species have yet been printed , I take this opportunity of publishing 

 the following dimensions in millimetres of the largest of the three 

 specimens. Total length 42.5; céphalothorax, length 6, width 6.3, dis- 

 tance of eyes from posterior margin 3.8; length of tail 21, of 1 st segm. 

 2, of 2nd 2.5, of 3°d 2.8, of 4^ 3, of 5th 5 ; w idth of l«t 3.7, of 2™ 

 8.1, of 3>»d 2.9, of 4th 2.7, of 5th 2.4, of vesicle 2.5, length of vesicle 



