36 



MR. II. R. HOGG ON SOME 



whom I have named the species, was found in close proximity to 

 a male specimen, which agrees closely with M. Simon's description 

 of the Paris Museum types of P. listeri White; but the two are 

 very different in coloration. 



Suborder LANIATORES. 



Family TRi^NOBUNiDiE Poo. 



Proc. Zool. Soc. Lond. 1902, vol. ii. p. 400. 



Genus Tri^nobunus Sor. 

 W. Sorensen in Koch & Keys. Die Araclin. Austr., 

 Suppl. p. 59 (1886). 



Dr. Sorensen desciibed the type species of this genus T. hicari- 

 natus from Sydney, and Mr. R. I. Pocock 2\ pectinatus from 

 Tasmania. To these #1 have now to add a New Zealand form 

 from the collection of Mr. T. Hall. In this the curious structure 

 of the eye-tubercle is still more elaborated than in the other two, 

 since it has four pairs of lateral branches. There is, further, 

 an apical spine, and the horns on each side of the base are 

 more powerful. The whole creature is profusely bespined and 

 granulated. 



Dr. Sorensen (loc. cit.) merely regarded Tricenohunus as a 

 second genus in the family Tripenonychidse, but Mr. Pocock very 

 rightly writes it down as a separate family. The quite different 

 type of sternum, together with the smaller and weaker palpi, 

 apart from the very remarkable development of the eye-tubercle, 

 show that it has proceeded along considerably different lines 

 from the above-named ioumiXy. The form of the eye-tubercle is a 

 specialisation of that seen in Eridanus Thor. and Plistobunus Foe. 

 of M. Simon's family Phalangodidfe. 



Synopsis of /Species. 



a. Eye-tubercle having two pairs of lateral branches in front of 

 the eyes. 



a^. Two longitudinal rows of spinous tubercles reaching 

 from the base of the eye-tubercle to the anterior rear 



segment hicarinatus Sor. 



W. A single median longitudinal row of spinous tubercles 

 reaching from the base of the eye-tubercles to the 



anterior rear segment pectinatus Poc. 



h. Eye-tubercle having three pairs of lateral branches in front of 



the eyes acuininatus, sp. u. 



Tri/ENOBUNUS acuminatus, sp. n. (PI. II. figs. 6 a-d.) 



Colour. Upper side greyish yellow all over ; the small tubercles 

 forming a pattern on the back are rather yellow. The under side 

 is more yellow all over, with two dark brown patches on each side 

 of the anal segment. Both joints of the mandibles are so thickly 

 covered with black network on yellow ground as to appear black. 



