Mr. W. F. Kiiby on the Family Hetrodidoe. 145 



ict \ 

 is received. 



be distinct when a longer series of South-African Hetrodidse 



Acanthoproctus Howai'thcBy sp. n. 



Long. Corp., (J 22 millim., ? 38 millim. (app. anal. 

 6 millim.). 



Female. — Head testaceous ; labrum, space round the frontal 

 horn, and antennae (except the two basal joints) chestnut- 

 brown. Head above the antennse rugose, below smooth and 

 shining. Antennai about 53-jointed, the scape enlarged, 

 about as long as broad ; second joint enlarged but less so, 

 the rest mostly longer than broad, but differing considerably, 

 and apparently irregularly, in their comparative lengths. 

 Horn stout, pointed, nearly straight, about three times as long 

 as the scape. Pronotum reddish brown above, testaceous on 

 the sides, and with all the lateral spines testaceous ; strongly 

 rugose, wuth two transverse depressions behind the frontal 

 ridge, and another at about three quarters of its length ; a 

 reddish longitudinal depressed line behind the frontal ridge, 

 with three broad pyramidal elevations rather than spines, 

 obtusely rounded off at the summit, on each side. Frontal 

 ridge with two large but obtuse teeth in the middle, and with 

 a trifid lateral horn, the outermost point the longest, slightly 

 recurved, the second short, nearly straight, and the innermost 

 long, projecting forwards, about as far from the second as 

 from the central teeth, and as they stand apart. From the 

 front of the central mass of the pronotum projects a large 

 obtuse spine on each side, and on the hinder portion of the 

 pronotum is a series of seven large spines at equal distances, 

 the front pair being the largest, and the rest diminishing. 

 Below the front pair is another tooth of equal length, with a 

 short one at its base ; there is also a conspicuous spine on 

 the front coxae, and a smaller one, with indications of others, on 

 the lower lateral border of the pronotum before the front coxee. 

 Legs testaceous, moderately long; femora unarmed, with 

 slight transverse ridges ; all the tibire below with three pairs 

 of small spines towards the extremity (including the terminal 

 spines) ; hind tibiae with an additional pair about the middle 

 of their length ; pulvilli black. Abdomen black, varied with 

 reddish above towards the base, and with three dorsal rows of 

 strong spines, tipped with red and pointing slightly backwards 

 from the second to the sixth segment ; on the seventh the 

 lateral ones are replaced by wai ts, as is the central one on the 

 eighth segment ; on the second segment is an additional 

 small spine, below each of the lateral ones ; on segments 



