624 THE HON. N. C. ROTHSCHILD ON [May 26, 



bristles are situated along the dorsal edge of this lobe, while 

 two fairly long ones are placed just beneath the pointed apex of 

 the lobe. The clasper, moreover, is ventrally widened into an 

 obtuse triangular lobe, which bears one slender bristle. The 

 finger (F) is asymmetrical, being leaf -shaped with the apex 

 curving upwards, bearing two moderately long bristles below the 

 apex and a few still shorter ones farther proximad. The manu- 

 brium (M) curves upwards, the ventral margin bulging out in the 

 centre. The ninth sternite (PI. XXIX. fig. 12, IX. st.) resembles 

 that of S. simsoni in general structure, but the inner arm is 

 different in outline, the horizontal arm is longer, and the number, 

 size, and position of the bristles are diflTerent. There are, as in 

 JS. simsoni and dasyuri, two apical spines on each side of the 

 horizontal arm of the ninth sternite, as shown in the figure. 

 The anal tergite is very different fi-om that of S. simsoni, bearing 

 a few thin bristles and on each side a pair of long apical ones. 

 The anal sternite is divided at the apex, each lobe bearing three 

 long bristles. — $ . The eighth tergite, which resembles in outline 

 that sclerite of 8. simsoni, bears about 9 short but sti'ong bristles 

 above the stigma, and from 29 to 34 bristles on the sides and at 

 the apex, as shown in the figure (PI. XXXI. fig. 16), The eighth 

 sternite is elongate-triangular, ending in a long sharp point as. 

 in ;S'. simsoni. The tenth tergite is distinctly sepai-ated from the 

 ninth tergite, as is also the case in S. simsoni. Proximally to 

 this suture there is a transverse row of bristles on the ninth 

 tergite. The stylet is very long. 



Length : S 1-1 mm., § 3-3 mm. 



"We have examined a pair of this species, the S (the type) 

 from Emerald, Victoria, found under a rotten tree-trunk in the 

 vii-gin forest by Mr. Edw. Jarvis ; the $ , from Victoria, off 

 Phascologale stvainsoni, was forwarded to us by Mr. D. 

 McAlpine. 



8. Ctenophthalmus rettigi, sp. n. (Plate XXVIII. figs. 3, 4.) 



Similar to C. agyrtes, but differing especially in the bristles of 

 the abdomen and in the modified abdominal segments. 



Thorax. — The comb of the pronotum consists of 18 spines. 



Abdomen. — The bristles are longer than in C agyrtes, especially 

 the three apical ones of the seventh tergite. The sternites of 

 segments three to seven in the S have a transverse row of 4 or 5 

 bristles and generally some small bristles in front of this row. 

 The basal sternite in the 5 has two or more bi'istles on the side ; 

 the following four sternites have a row of 6 or 7 bristles and 

 from 6 to 10 smaller ones in front of the row ; on the seventh 

 sternite the row contains about 10 long bristles. 



Modified segments.— 6 . The eighth'tergite (PI. XXVIII. fig. 3) 

 has abovit 6 small bristles above the stigma. The sternite becomes 

 gradually narrower towards the apex, which is truncate ; it bears 

 on its lower j)ortion 14 or 16 bristles (PI. XXVIII. fig. 3). The 



