732 VliOCEEDlNGS OF THE NATIONAL MUSEUM. 



Locality. — The type was a single male specimen from Mombassa. 

 Subsequently this species has been reported from various other places 

 in that region. It is without doubt congeneric with A. stelli/er, the 

 type of the genus, the habit, secondary sexual characters, and copu- 

 latory legs being closely the same. 



The copulatory legs, compared with those of the specimen from Dar 

 es Salaam (Stuhlmann), show several' appreciable differences. The 

 basal spurs of the node are much more pronounced. Those of the 

 mesial face are situateji close together at the apex of a long, subconic 

 process. The distal spine of the node of laxtis is smaller than that of 

 Stuhlmann's specimen, while the lateral corner opposite is pointed in 

 the type and rounded in the other. 



The process of the sixth segment is broader and stronger than in the 

 type and has the distal corners somewhat jirominent, while that of the 

 type is triangular, longer than broad, the lateral margins merely con- 

 vex. The process of the fifteenth segment is somewhat longer and 

 more pointed in the Dar es Salaam si)ecimen, and the marginal calli 

 are throughout somewhat broader and more prominent. The first seg- 

 ment is longer in the type and is more decidedly shortened laterad, 

 the posterior margin being cairied more obliquely forward. The 

 depressions in which the pores are located are shallower in the type. 



The preanal scale has a distinct, small and rounded, subconic apex, 

 though the contrary might be inferred from Gerstiicker's description. 



The wart-like prominences which Gerstacker ascribes to the basal 

 joints of the posterior legs seem to be merely the usual small granules 

 which appear at the bases of the hairs of this and other families. 



The terminal knob which Gerstacker ascribes to the process of the 

 sixth segment does not appear on his type. The apex of the process is 

 as usual somewhat thickened and the point blunt, but in this speci- 

 men the apex distinctly tapers both in breadth and thickness. 



The i)rocess of segment 15 is in its proper place, not on the fourth 

 pair of legs from the last, as Gerstiicker states. 



Gerstacker gives the length as 78 mm., but this is certainly a mis- 

 take. The specimen is strongly curled at both ends, so that exact 

 measurement is difficult, but his type is certainly less than Go mm., 62 

 mm. being a careful estimate. 



On the label of the type specimen in Gerstiicker's handwriting the 

 locality is given as Sansibar, while in his published description it 

 stands as Mombassa. Dr. Karsch informs me that this may not be 

 a contradiction, as specimens were usually specially indicated which 

 came from the island. The material, however, from any one locality is 

 still so small that it is difficult to estimate tlie value of the minor 

 differences noted, and some of the characters of the type specimen, 

 such as the form of the last segment, may easily be the result of 

 accident. 



The species can be distinguished at once from stellifer by the some- 

 what more slender body and the more narrow and pointed process of 



