33 



segments notched at apex on under-surface. Front femora stout and feebly 

 dentate; four basal joints of front tarsi stout, and forming a briefly ovate pad, 

 basal joint of hind tarsi very slightly longer than second. Length, 5-5.5 mm. 



$ . Differs in having the antennae and legs somewhat shorter and abdomen 

 not notched. 



Hab. — South Australia: Murray River (R. F. Kemp) ; Victoria: Pianjil, in 

 July (C. Oke); New South Wales: Mulwala (T. G. Sloane). Type, I. 12867. 



The sides of the head for their greater extent are quite parallel ; the teeth 

 of the mandibles vary on each side, and also on the individuals ; those figured 

 are of the type male. The elytra on two specimens are not quite black', although 

 at first glance they appear to be so ; their punctures are small and not very 

 sharply defined, but are usually lineate in arrangement. In general appearance 

 like some of the dark forms of L. mutator, but head considerably longer and 

 m.ore parallel-sided, eyes smaller, antennae thinner, and not infuscated in 

 middle, etc. 



Lathrobium punctipenne, n. sp. 



d . Shining black; tarsi and palpi flavous, a few erect setae' oh upper- 

 surf ace, becoming longer and more numerous at apex of abdomen, elytra and 

 abdomen sparsely pubescent. 



Head subquadrate between antennae and neck, angles rounded off ; ,vith 

 numerous, but not crowded, sharply-defined punctures of moderate size. 

 Mandibles strong, with several acute teeth. Antennae with first joint as long- 

 as second and third combined, third slightly longer than second and distinctly 

 longer than fourth, fifth-tenth subglobular. Prothorax slightly longer than wide, 

 widest at apex, where the width is about equal to that of head, sides feebly 

 decreasing to base, hind angles strongly rounded; an almost regular row of 

 punctures on each side of the shining median line, towards sides with irregular 

 ones. Elytra about one-fourth wider than prothorax and one-half longer, parallel- 

 sided except that the angles are rounded off; with distinct rows of punctures. 

 Subapical segment of abdomen triangularly notched at middle of apex on under- 

 surface, the preceding segment depressed there. Front tarsi with four basal 

 joints dilated to form a circular pad, basal joint of hind tarsi slightly longer 

 than second. Length, 4.75-5 mm. 



9. Differs in having the head slightly smaller, the legs slightly shorter, 

 and the abdomen not notched. 



Hab. — Western Australia: Swan and Vasse Rivers (A. M. Lea). 



A highly-polished black species, like very small and thin P. australkum. 

 On the type male the antennae and legs (except tarsi) are almost as dark as the 

 other parts, but on the female they are of a dingy brown. The punctures on 

 the elytra are about as large as those on the prothorax, but being somewhat 

 rugose they are much less sharply defined. 



Lathrobium tropicum, n. sp. 



d . Black ; legs and part of under-surface of abdomen of a dingy testaceous- 

 brown, antennae darker, but becoming paler towards apex, labial p^lpi still 

 paler. Length, 5 mm. 



Hab. — Northern Territory: OenpelH (P. Cahill). Type (unique), in 

 National Museum. 



The sculpture is almost exactly as described in the preceding species, and 

 the general appearance is much the same, but it differs in having larger eyes 

 (the distance from each eye to the neck is but little more than the length of 

 an eye, on that species it is twice the length of an eye), antennae distinctly loriger 

 and thinner, punctures on top of head sparser, prothorax slightly w:ider,' legs 

 paler, and clothing somewhat sparser. From L. orthodoxum it differs in haying 



