1890.] • OF THE FAMILY BUTHID^. 131 



Tergites almost wholly smooth ; the sixth bearing a few minute 

 scattered granules, the seventh somewhat closely but finely granular ; 

 each of the first six furnished with a smooth median keel, the seventh 

 with a low anterior median elevation, and two lateral almost obsolete 

 granular keels. 



Sternites wholly smooth, sparsely punctured, obsoletely bisul- 

 cate. 



Tail wholly without keels ; the first four segments shallowly 

 excavated above and feebly granular ; the first three furnished 

 posteriorly on each side with two large granules which mark the 

 positions of the terminations of the keels that have disappeared ; on 

 the first segment the superior keel is further represented by one or 

 two granules anterior to the terminal one ; on the other segments 

 each superior keel is represented by a row of punctures ; upper 

 surface of the fifth posteriorly hollowed ; under surface of the seg- 

 ments conspicuously but somewhat sparsely punctured. Vesicle 

 punctured beneath, with a tuft of setse above and another round the 

 large spine which is situated beneath the aculeus ; aculeus stout 

 and considerably curved. 



Palpi : humerus almost wholly smooth ; the positions of the nor- 

 mal carina; marked by a few granules and setiferous pores ; brachium 

 sparsely and weakly granular in front, rounded, smooth and punc- 

 tured elsewhere ; ?«awMs narrow, sparsely punctured, sparsely granu- 

 lar in front ; digits long and curved, in contact tliroughout their 

 extent ; the internal series of teeth widely separated from the median 

 rows. 



Lefjs almost entirely smooth, not carinate. 



Pectines projecting slightly beyond the fourth coxae ; furnished 

 with 18 teeth, of which the basal is much dilated. 



Measurements in millimetres. — Total length 29 ; cephalothoras, 

 length and width 3'5: length of tail 18 ; of 1st two segments 5; 

 of 5th 3"5 : humerus, length 3; brachium, length 3-5, width 1*5; 

 manus, width 1'3 ; length of " hand-back " 1 ; of movable digit 4. 



A single female, probably immature, specimen in the Museum, 

 collected at Mombassa by Mr. Grose Smith. 



Very closely allied to the typical form otL. Jischeri, Karsch, from 

 Barawa (Somali). This species is unknown to me, but the descrip- 

 tion of it fails in a number of particulars to apply to the specimen 

 here named. These particulars, although of small importance when 

 considered separately, constitute in the aggregate a sufficiently wide 

 distinction to justify the separation of this specimen as the type of a 

 new variety. 



Thus the cephalothorax of L. Jischeri is said to be adorned with 

 two oblique yellow bands which meet at an angle in the middle line ; 

 these bands are not observable in L. nigrimanus : the upper surface 

 of the abdomen in L. Jischeri is said to be adorned with a median 

 wide yellow band, no mention being made of lateral sjiots ; in L. 

 nigrimanus this band is not complete, nor would it be wide if it were 

 so, for the median spots exist only on the posterior half of the ter- 

 gites and are narrow ; moreover there are very conspicuous lateral 



