AETHROPOD FAUNA OF THE WEST INDIES. 393 



Total lengtb 97 mm., of carapace 11, of tail 65'5 ; width o£ 1st 

 segment 7, of 5th 9, of brachium 4, of mauua 7. 



Locality. Hayti (Mus. Brit. etc.). 



According to other specimens in the British Museum collection, 

 this species also exists in Mexico and Brazil. 



Hitherto this form has been known by the specific name of 

 HempricJiii. But So. junceus of Herbst appears to me to be the 

 same Scorpion, and I have consequently adopted this name for 

 it. Herbst' s specimen was said to have only 16 pectinal teeth, 

 a, number which is somewhat below the average ; but it does 

 not seem that this character can be of any great value, seeing that 

 within the limits of the eleven specimens known to me the 

 number varies from 17-23. 



In addition to the species recorded above, I refer to this genus 

 a second, of which the British Museum possesses three specimens 

 from Brazil. These specimens I, without hesitation, identify as 

 H. Agamemnon, C. Koch (Die Arachn. vi. p. 103, fig. 506). 

 H. Agamemnon differs from H. junceus in having an acute spine 

 beneath the aculeus of the tail and in having tlxe subpectinal 

 area of the first sternite finely granular, &c. 



Possibly also Centrums princeps of Karsch is a Heteroctemis 

 {cf. supra). 



Genus Diplocentrits, Peters, Hon. Ak. Wiss. Berlin, 1861, 

 p. 512 ; Thorell, Etudes Scorpiol. p. 10. 



Anterior border of carapace deeply excised in the middle ; the 

 ocular tubercle cleft and situated well in advance of the middle 

 of the plate. Three lateral eyes on each side, almost on the 

 very edge. 



Tail moderately strong ; vesicle with a distinct tooth beneath 

 the aculeus, which is very short. 



Palpi robust; hands large, convex, the denticles of the digits 

 consisting of a close-set median series, on each side of which is a 

 lateral series consisting of more scattered denticles, some of 

 which are enlarged. 



ChelicercE with the superior terminal fang much shorter than 

 the inferior. 



Terminal tarsal segment of the legs armed beneath with two 

 parallel rows of spines. 



Sternum pentagonal, about as wide as long, with parallel 

 sides. 



