272 Mr. G. C. Champion on the Heteromerous Coleoptera 
face of the posterior tibiae are elongate, sharp, and very 
oblique ; the basal one is shorter. The elytra are 
mottled with fulvo-cinereous and fuscous pubescence, 
but the light-coloured pubescence predominates. 
Mordellistena austrina, n. sp. 
Elongate ; pitchy- or reddish-brown, the head and prothorax 
entirely ferruginous, or the prothorax ferruginous, with a trans- 
verse infuscate band across the middle ; thickly and uniformly 
clothed with fulvo-cinereous pubescence ; the legs ferruginous, the 
hind pair partly infuscate. Antennae long and slender, joints 3 and 
4 equal in length, 5 twice as long as 4, the succeeding joints 
similarly elongate. Pygidium elongate. Posterior tibiae with a 
short basal and two elongate, oblique ridges ; the first joint of the 
hind tarsi with three, the second and third joints each with two, 
oblique ridges. Length (to end of the elytra) 3^ mm. 
Hah. N. W. Australia — Port Darwin; Tasmania — 
Hobart. 
One specimen from each locality. The example from 
Port Darwin has the head and thorax entirely ferrugi- 
nous, and the pubescence denser than in the Tasmanian 
specimen, this latter being somewhat worn. Some of 
the Mordellse described by Mr. Waterhouse possess a 
similar extended distribution. 
Mordellistena jucunda J n. sp. 
Moderately elongate ; ferrugineo-testaceous, the elytra with the 
suture narrowly, and an oblique stripe extending from beneath the 
humeri to the apex, black or piceous, and the disc indeterminately 
infuscate from a little below the base to the apex ; the elytra with 
a line of yellowish-cinereous pubescence along either side of the 
suture, the pubescence on the other parts partaking of the ground- 
colour ; the antennae with the four or five basal joints ruf o-testaceous, 
the others brown ; the legs rufo-testaceous, the hind pair with the 
apex of the tibiae and of each of the tarsal joints 1-3 black ; be- 
neath ferruginous, the ventral segments (like the pygidium) partly 
infuscate. Antennae moderately long, joint 3 short, 4 twice as long 
as 3 and slightly longer than 5, 5-10 equal, longer than broad. 
Pygidium elongate, slender. Posterior tibiae with three short, 
acute ridges ; the first joint of the hind tarsi with two ridges, the 
second joint with one only. Anterior tibiae in the male slightly 
curved, sinuate within. Length (to end of the elytra) 2|-Jj^ mm. 
Hab, W. Australia — Fremantle. 
