136 Annals of the South African Museum. 



followed by a band of 12-14 stout spinules which reach to the base of 

 outer or anterior surface. 



Labium with 8-9 denticles anteriorly. 



Chelicerae. Inner curve of fang with the usual serration ; groove 

 with 5 strong teeth on the inner border and 3 smaller ones posteriorly 

 on the outer border. 



Genital operculum. Covered with hairs down to the lower lip, and 

 apparently with no striae on its surface. 



Measurements. Total length 2O5 mm. ; carapace 6'5 mm. long aud 

 5'9 mm. wide ; sternum 4 mm. long ; length of tibia of 1st leg 

 2 - 6 mm. 



NOTES. 



POECILOMIGAS ABRAHAMI, O. P. Cbr. 



Since writing the foregoing notes, p. 84, the Eev. Neudick 

 Abraham has supplied me with further information, based on his 

 own observations, on the above paired discs. Their presence on the 

 lids of the trap-door retreats was pure chance, since thev are con- 

 structed by larvae (imago not known) which live in the band con- 

 necting the two discs. This band is tubular, and has a flap or door 

 at each end. The grub issues at either door and feeds on the lichen, 

 etc. covered by the disc above : when that is finished it transfers its 

 attention to the area covered by the other disc, and thus feeds con- 

 cealed from possible enemies, and with a safe retreat in the tube if a 

 bird should turn the discs over. When these two pastures are 

 exhausted, it transfers its dwelling-place to another region, and it 

 was thus quite by chance that the discs happened to fit over the trap- 

 door lids. The Rev. Abraham has not succeeded in rearing any of 

 the larvae to maturity, but the above note may serve to guide others 

 to secure further information. 



HOMOSTOLA ZEBRINA, Pure. (p. 97). 



Since going to press a further paper by Hewitt (Ann. Transv. Mus. 

 vol. v, pt. 3, p. 203) provides fresh localities and a diagram of the 

 palp of the $ of specimens, which the author refers to Spiroctenus 

 (Homostola) zebrina ; I have since examined Hewitt's specimens, both 

 <$ <$ and ? ? , and consider them to be true Homostola, sp. zebrina, 

 and can hardly agree that they are Spiroctenidae, though the two 

 genera have much in common. The relative sizes and positions of 

 the sternal sigilla (see Text-fig. 13, and note on sternal sigilla, p. 129) 

 are a clear and definite distinction, apart from the dentition of the 

 chelicera and scopulation of metatarsi, etc. 



