ON A SMALL COLLECTION OF SCORPIONS. 309 



to have been established upon immature specimens that are possibly 

 referable to more than one true species. May be some of them are 

 inecjaceiphalus of Koch. 



The species described by C. Koch (loc. cit. ix. pp. 9-11) as ceyloni- 

 CMS, Herbst, is, judging by the length of the tail, still another 

 species. Possibly it may be the young of sicammerdami. 



Whether Dr. Karsch (Abh. Nat. Ver. Brem., ix., pp. 68-69) in his 

 synopsis of this genus is discussing Herbst's species or Koch's or 

 both, I am unable to surmise. 



This new species, phipsoni, which I have great pleasure in dedicat- 

 ing to the secretary of this Society, perhaps comes nearest to 8c. 

 megacejjhalus of C. Koch (loc. cit., iii., p. 73, fig. 224) of which the 

 Museum has examples from both India and Ceylon. The two agree 

 pretty closely in smoothness, in the shortness of the tail, &c. ; but 

 in megacephalus the manus is much larger, its width being much 

 greater than the length of the back of the hand, moreover the tuber- 

 cles on its upper surface are lower and more anastomosed ; the upper 

 caudal keels too are nearly smooth. The largest example that I have 

 seen of megacejjJialus measures 122 mm. in length. 



It also closely approaches hcngalensis of C. Koch ; but the manus 

 is much flatter and much more distinctly tubercular. 



The following synopsis may prove of some use to those who are 

 in difficulties over the Indian species of this genus : — 



Synopsis of the Indian Species of Scorpio, 

 a. Tail in 6 and 9 more than four times the length of the 

 cephalothorax ; the cephalothorax in $ and ? shorter than the 

 first two caudal segments ; manus strongly produced posteriorly, 



with its inner edge nearly straight sicammerdami (Simon). 



h. Tail in S and $ less, in $ always much less, than four 

 times the length of the cephalothorax ; the cephalothorax in $ 

 always, in the 6 usually considerably shorter than the first two 

 segments; inner border of the manus more convex. 



a^. The external area of the upper surface of the hand 

 nearly vertical and separated from the rest of the surface by a 

 distinct though sometimes irregular ridge formed by the linear 

 anastomosis of tubercles ; legs, chelicerae and vesicle clear 

 fulvous or ferruginous .fulvipes (C. Koch) . 



