Scorpions from Ecuador. 417 



fifth 4*8, length of latter 7 ; width of vesicle 3'2, of brachiuni 

 2"7, of hand 3 ; length of hand-back 4, of movable digit 8*8. 



Loc. Cuenca, in Ecuador (95. 6. 23. 1). 



Differs from the female of forcipula in having the tail 

 wider, its upper crests more strongly denticulated, those on 

 the fifth segment in forcipula not being denticulate. The 

 differences in the proportions of the tail-segments may be 

 judged by a comparison between the measurements in milli- 

 metres given of T. spinatus and those of the female of the 

 type oi forcipula. 



? of forcipula. — Total length of tail 39 ; width of first 

 segment 3*8, of fourth 4*2, of fifth 4*2 ; length of fourth 6"2, 

 of fifth 7 ; width of vesicle 3'4, of brachium 2'5, of hand 2'5 ; 

 length of carapace 6*5. 



These data show that the vesicle is larger as compared with 

 the width of the tail in forcipula than in spinatus. 



Tityus ecuadorensis, Kraepelin. 



Titi/us ecuadorensis, Kraepelin, JB. Hamb. Wissen. Anstalteu, xiii. 

 1896, p. 127, figs. 6, 7. 



Subspecies zarumcBj nov. 



Specimens of a species of Tityus received from Zaruma in 

 Ecuador may be recognized from the typical form of ecuador- 

 ensis as follows : — 



a. Humerus, brachium, and trochanter of chelae 



a uniform ochre-yellow, or at most very 

 slightly variegated with black ; sterna 3 

 to 5, sometimes also 2, clouded with 

 black ; posterior and lateral portions of 

 carapace much more heavily infuscate ; 

 keels and granulation of fifth caudal seg- 

 ment and vesicle stronger ecuadorensis, Kraep. 



(Loja, in Ecuador.) 



b. Humerus, brachium, and trochanter of chelae 



very largely infuscate above ; only the 

 last sternite mottled (the fourth some- 

 times slightly so at the sides) ; posterior 

 and lateral portions of carapace mostly 

 yeUow, lined with black ; keels and granu- 

 lation of fifth caudal segment and vesicle 



much weaker ecuadorensis zanimcp, nov. 



(Zaruma, in Ecuador.) 



Male and female examples of this form were obtained by 

 Mr. T. Gunter. The male has the tail long and slender and 

 the hands dilated. Co-types of the principal form have been 

 sent to the British Museum by Prof. Kraepelin, of Hamburg. 



