224 



Length, 23 ; breadth, 7 mm. 



Habitat. — 



I cannot compare this species with any previously described 

 species. From T. convexus, SI., its more elongate form and the 

 flattened elytra are sufficient to distinguish it at a glance. 

 T. ohsciirus, SI., and T. noctis, SI., nve founded on female 

 specimens, and comparisons between different species of 

 AmycteridcB, not of the same sex, are apt only to mislead. 



Talaurinus convexus, «. v'- 



This species from tjie McDonnell Ranges in Central Australia, 

 though not one of the Amycterides of the Elder Exploring Ex- 

 pedition, may be very appropriately described here, as being 

 closely allied to the preceding three species and adding another 

 to the isolated group they form in the genus 7\tlatirinus. Tt is 

 represented in my collection by a single example. 



Male. — Oblong-elliptical, convex ; prothorax coai'sely granul- 

 ate on disc ; elytra longitudinally convex, foveostriate. Black ; 

 a faint median vitta of griseous scales on foreliead, bifurcating on 

 rostrum; a few griseous scales near eyes; prothorax withovit 

 scales, excepting a small patch of griseous scales in middle of 

 vertical part of each side, and another similar patch of scales 

 near each basal angle ; disc of elytra almost free from scales, a 

 few in some of the foveai, the scales more plentiful on posterior 

 declivity, a discontinuous stripe of greyish scales along lateral 

 margins. Ventral segments with a narrow vitta of thiolv, bristly, 

 fuscous hair. 



Rostrum short, excavate, without internal ridges ; the middle 

 smooth, not raised ; a deep, broad, transverse impression at base ; 

 external ridges not divided from forehead, lightly convex, 

 diverging slightly in front. Head not large ; front depressed in 

 middle, and lightly excavate behind rostrum. Prothorax 

 broader than long (5| x 6 J mm.), dilatate 0)i sides, broadest 

 before the middle, wider across base than across apex, trans- 

 versely convex, hardly so longitudinally, but declivous in middle 

 to anterior and posterior margins ; anterior margin strongly 

 sinuate, middle lightly advanced ajid rounded above head ; base 

 truncate ; granules unequal, much larger on disc tlian on sides, 

 separate, unisetigerous, a few smaller ones extending to near 

 coxa; ; a narrow longitudinal median line dividing the granules 

 on posterior-half ; a light transverse impression across anterior 

 part, more clearly defined and nearer margin behind each post- 

 ocular sinuation ; an obsolete longitudinal impression on each 

 side, becoming well marked near each basal angle. Elytra oval 

 (14,'/ X 7^ mm.), lightly rounded on .sides, widest about middle, 

 transversely and longitudinally convex ; disc not flattened ; base 



