188 RECORDS OF THE ADSTRALIAN MUSEUM. 



For the detei-niiiiatiou of species treated in this |5aper, I 

 have made a series of diagrams, illnstratiug in each case the 

 scheme of dentition. The system adopted is a new one, and 

 it is curious to note that a somewhat similar idea of elucidating 

 species was adopted by Mr. John Hewitt^ in his paper, 

 "Descriptions of New Species of Arachnida from Cape 

 Colon}'." Before Mr. Hewitt's paper, dated September 10th, 

 1913, arrived in S^'dney, the MS. and diagrams reproduced 

 below were awaiting attention at the hands of the printer. 

 At the same time, I wish it to be understood that this system 

 of deliniation appears to me to be so obviouB and natural, that 

 I do not claim any merit for originality, even if such exists. 



Family AVICULARID^. 



Sub-fumih/ MioiNi?:. 



Group HOMOGONE^. 



For the reception of the species desci-ibed below, I venture 

 to propose a new group oi- sectitui and a new genus to be known 

 respectively as Homogoneiw and J-l(niio(join(. The species 

 appeal's to be a ver^' anomalous one, presenting, as it does, 

 featui-es that make it difficult to harnu)nise with any existing 

 genus, and yet at the same time displaying unmistakeable 

 affinities to sevei-al. The contour (especially when viewed in 

 profile) is sugestive of Hfisxiihum, Walck., by the elevation of 

 the cephalic segment, but it differs widely thei'efrom in the 

 disposition of the eyes, which in Homcujoiin is much more 

 compact. Again, the genus just quoted, and described here- 

 under, suggest affinities, both in Toi-m and armature, to Simon's 

 South American genus Cahitlmtarsiifi aiul Hogg's Tasmanian 

 genus Heteroiiiigas, and also by the ])i-eseiice of the peculiar 

 large and erect bristle imjnediately in front of tlie anterior 

 median eyes. But from botli tliese genera 7/(u»oj/o)/a differs in 

 repect of its eyes. The points will be a])parent to the student 

 if he will compare the figui-es sul)mitted hei-eunder with those 

 of Simon* and Hogg.-'^ Again, in IJeferoniigns the thoracic 

 fovea is desciibed as l)eing " straight or slightly pi'ocurved,"^ 

 but in Homoijona it is strongly procurved. 



' Hewitt — Kec. Albany Mus., ii., ti, ]>. -tTo. 



•» Simon— Hist. Nat. des Araii,'ii.. ii.. IHKT (lito;^'. p. STil. 



' HojjTg— Proc. Zool. Soc, 11(02, p. 12H. 



* Hogg — Loc. cit. 



