4. On Some South African Aviculariidae (Arachnida). Families 

 Miyidae, Ctenizldae, Diplotheleae, and Dipluridae. By R. W. E. 

 TUCKER, B.A , Assistant. 



("With Plate IX and Thirteen Text-figures.) 



FAMILY MICIDAE. 



GEN. MOGGRIDGEA, O. P. Cambr. 



The separation, of M. setiroxa, coegensis, and nigra by Hewitt (Ann. 

 Trans. Mus., vol. 5, No. 2, p. 92) under the heading (a 1 ) "Coxa II 

 with a distinct posterobasal group of shorter and more densely crowded 

 (often spiniforni) setae inferiorly" seems doubtful. Purcell, in his 

 description of M. coegensis (Ann. S. Afr. Mas., vol. 3, pt. 4, p. 72), 

 mentions " Coxa II with a much smaller and scarcely distinct group 

 (formed of 6-8 setae placed closer together than elsewhere ") ; and in 

 the type specimen the approximation of the bristles is scarcely a 

 distinct group. Of the other members, nli/ra has no such group, and 

 #rh<-o.m has only a very slight approximation of bristles, as in 

 coegeitsis ; it may be advisable therefore to merge the seticoxa-coegensis 

 group with the quercina-microps group, with the posterobasal group 

 of bristles on Coxa III as the distinguishing character, making the 

 presence of a few extra bristles basal ly on Coxa II a subsidiary 

 specific guide. 



MOGGRIDGEA QTJERCINA, Sim. 



1903. Simon, E., Ann. Soc. Ent. Belg. vol. 47, pt, 1, p. 22. 

 1903. Simon, E., Hist. Nat. des Araign. vol. 2, p. 881. 

 1903. Purcell, W. F., Ann. S. Afr. Mus. vol. 3, pt. 4, p. 73. 

 1915. Hewitt, J., Ann. Transv. Mus. vol. 5, No. 2, p. 91. 



An adult $ specimen (No. B. 1364) taken from nest on a Mahogany 

 Umlcahla tree in Durban by H. W. Bell-Marley, September, 1915. 

 This specimen is so closely allied to M. quercina that it has been 

 referred to that species. 



Apart from the size, the few differences which present themselves 

 seem insufficient to separate it specifically from the above. 



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