860 ME. E. I. POCOCK OK SCORPIOlirS, PEDIPALPS, [NoV. 14, 



Genus Aean^thea Butler. 



AEANiETHEA CAMBEIDGEI Butl. 



Arancethra cambridgei, Butler, Tr. Ent. Soc. 1873, p. 175, pi. iv. 

 fig. 8. 



Arancethra ungari, Karsch, Zeits. gesammt. Naturw. li. p. 322, 

 pi. ix. fig. 1 (1878). 



Loc. Feriiand Vas Eiver {Bu Chaillu ; type) ; Lagos (Oapt. Elmes) ; 

 W. Africa ; Feruaudo Po {Mr. Kalbreger) ; Accra {O. A. Hightt) ; 

 Loango Eiver {H. L. Duggan) ; Benito Eiver (G. L. Bates). 



Aean^thea butleei, sp. n. (Plate LV. fig. 1.) 



Colour. Carapace, mandibles, mouth-parts, sternum, and coxae 

 reddish yellow ; patella, tibia, and tarsus of palp black ; legs black, 

 the femur of 1st and part of 2nd reddish ; tibiae of 1st, 2nd, and 4th 

 pairs with a broad basal yellow ring, the ring incomplete below on 

 the 1st ; upper and lower side of abdomen and the tips of the lateral 

 prominences black ; sigilla reddish. 



Carapace and legs as in A. cambridgei. Abdomen of much the 

 same form also as in that species, about twice as wide as long ; 

 the median portion of the anterior border simply emarginate, with 

 a low tuberculiform prominence on each side ; lateral portion of 

 carapace furnished with five blunt conical lobes, one on the anterior 

 border just in front of the antero-lateral sigillum, the posterior 

 process lower than the others ; the entire convex posterior border 

 of the abdomen for a space which exceeds half the length of the 

 abdomen without tubercles; abdominal integument punctured as 

 well as striolate ; sigilla very large, the six on the middle of the 

 back arranged in a circular form, the quadrangle formed by the 

 anterior and posterior pairs only, about twice as long as wide. _^ 



Measurements in millimetres.— Length of abdomen 7, width 16. 



Loc. Benito Eiver (G. L. Bates). 



This interesting new species, which is dedicated to Dr. A. G-. Butler, 

 the describer of the genus Arancethra, may be recognized from the 

 typical and hitherto only known species of the genus by the 

 following characters : — 



a. Carapace, sternum, legs, &c. a rich dark red or black 



colour ; underside of abdomen entirely black, a black 

 band across the fore part of the abdomen above; 

 margin of abdomen furnished with at least 8 strong 

 sharp spiniform processes, the posterior not very far 

 from the postej-ior middle line ; sigilla much smaller, cambridgei Butl. 



b. Carapace, sternum, coxse, &c. reddish yellow ; tibiae of 



1st, 2nd, and 4th legs with a yellow band ; abdomen 

 flavous below and without anterior black band above; 

 abdomen furnished with only 5 lateral blunt tubercles, 

 the posterior of these being far from the middle of the 

 posterior border ; sigilla very large biitleri, sp. n. 



