Nicholls and Richardson — Tivo New Species of Acrotclsa. 137 
ibits also a number of other minor differences. The specific name 
lendens is chosen for this new species on account of the showy 
inulation of the filiform appendajyes and the mottled condition of 
le body. 
Acrotelsa westralis ^P- nov. Plate XVI Ij fi^'S. 11-20.) 
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Specific diagnosis . — Body moderately elongate, dorso-ventrally 
expressed, smaller in girth than A. splendcns and tax)ering 
ig'htly x*osterioriy. Head dexiressed and closely attached to the 
lorax. Tufts of setae less developed. Eyes slightly anteriorly 
tuated and less consxoiciious. 
There is no visible neck region. Thorax as wide as abdomen, 
,iort and little constricted posteriorly. Tergite ten ecpiilateral, less 
cutely pointed than in A . splendcns, converging edges almost 
iiraiglit and each bearing setae in three prominent, symmetrically 
L-ranged, short combs of not more than two or three setae. Body 
itirely covered with scales. Antennae not as long as body, and 
,.'rci as long as the abdomen. Metasternite short, with an almost 
'ini-cireular x^osterior margin with three single rows of 
Aae on each side. Mesosternite slightly larger and more acute, 
ith three of similar combs. Legs stout though not x>i'omineiit, 
\e femur only visible in ])art from the dorsal asx>eet. Claws asym- 
letrical, the outer one strongly hooked. 
Colour (in spirit) purxfiish gia'y with browui scales; legs dark 
rowu to black. 
Length: male, 7 mm. Antennae, 5 mm. Caudal styles, o mm. 
Locality. Beaconsfield, one specimen only, male. 
Detailed description . — The body is less elongate than that of 
I. splendens, being about three times as long as wide. The thoiax 
i only slightly depressed, giving the body a more cylindrical ap- 
earance. The head is less prominent, with the anterior margin 
.^ss convex in outline. There is no visible inter-segmental region or 
eck. 
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Thorax The thoracic tergites are moderately develox>ed, short, 
dth the posterior margin characterised by an angular excavation 
a the pro- and meso-thoracic tergites. The posterior margin of the 
letathoracic tergites is concave posteriorly. The lateral margins of 
he thorax are strongly setose and the characteristic combs of 
n-istles are in laterally situated rows which arc' inclined to the 
aargin of the tergite. 
Abdomen— Tliei-ii is little viiriution iu the length of the ab- 
lominal tergites, all of which bear a symmetrical pair of setose 
ombs towards the lateral margin. The sternites of the eighth ami 
ihith bear styles; those of the eighth are small ami reduced, whilst 
