62 [March, 



small hairs. There are seven genal spines. Between the antennal groove and the 

 helmet there are two rows of bristles, the first containing about a dozen small ones, 

 and the second seven bristles, of which the third from the top is very long. There 

 are five rows of stout bristles on the occiput, as well as some additional bristles. The 

 rostrum is slightly longer than in ^. dast/uri. 



Thorax. — The pronotum bears two rows of bristles, and a comb of twenty-five 

 or twenty-six spines. Tliere are throe regular rows of bristles on the meso- and the 

 metanotum, the former having in addition two dorsal sub-apical slender spines on 

 each side. The metathoracic epimerum bears two rows of bristles as in S. dast/uri, 

 but the first row contains more bristles, there being in this row in the g of S. simsoni 

 six, and in the $ eight bristles. 



Abdomen. — The tergites one to six bear each two rows of bristles. The seventh 

 tergite has three rows of bristles in the ? and two in the <?, with an additional 

 bristle on the back. Both rows are more extended laterally than in 5. dast/uri, at 

 least three bristles of the second row being placed below the stigma on the middle 

 segments of iS. simsoni. The numbers of short apical spines on the tergites are in 

 the (? 5, 6, 4, 2, 2, 2, on the two sides taken together, the ? having one or two more 

 on the anterior segments. Ihe seventh segment bears no such apical spines. The 

 bristles on the sternites are also a little more numerous than in S. daxyuri. 



Legs. — The mid and hind coxse are broader atid more rounded than in S. 

 dasyuri. The hind tibia bears more bristles on the outer side, and some of its 

 dorsal bristles are longer, the longest apical bristle reaching beyond the apex of the 

 first tarsal segmert. The first mid tarsal segment is about one-third longer than 

 the second, the proportion being 24 : 17. In S. da.<tyuri the proportion is 22 : 20. 

 The longest apical bristle of the first hind tarsal segment reaches to the apex of the 

 second segment, while the longest bristle of the second segment reaches a little 

 beyond the apex of the third. 



Modified Segments. — ^ . The clasping organs are of the same type as those of 

 S. dasyuri. The manubrium, however, is more curved, being pointed at the apex. 

 The elliptical process of the clasper is shorter. The proximal dorsal bristles are 

 accompanied by a single small hair. The finger is rather more slender. The ninth 

 sternite is less curved and differently armed. This sternite bears a long bristle near 

 the base and another half way towards the apical spines, with some hairs in between. 

 The apical spines are decidedly shorter than in S. dasyuri, especially the proximal 

 one. The anal tergite (PI. I, fig. 5) is peculiar, bearing on the upper side near the 

 apex a very dense patch of short bristles. 



? . The seventh sternite is less deeply emarginate than in -S. dasyuri. The 

 eighth tergite (PI. I, fig. 2) bears beneath the stigma a vertigial row of five bristles, 

 of which the third is very long, the two lower bristles being more proximal than the 

 others. Ventrally this sternite bears about eleven stout bristles and two small 

 hairs, besides a number of hairs which stand at and near the conically produced 

 apex. Length, 3 mm. 



We have one ^ and ? of this species from Launceston, Tas- 

 mania, the male from Mus velufinus and the female from Basyurus 

 macula/us, collected by Mr. A. Simson. 

 Tring : December 29th, 1904. 



