398 STUDIES IN AUSTRAIJAN ENTOMOLOGY, XVI., 



pronotum. Elytra smooth (except for rows of fine setae), widely 

 oval(2-25 X 1 '8 ram.); base arcuate, declivous; apex obliquely 

 truncate on each side, rounded in middle, a very light sinuosity 

 just within outer angle. Length 5, breadth 1-8 mm. 



Hah. — Port Darwin(Dodd). Coll. Sloane. 



A very distinct species, diiJering from our other two allied 

 species, L. globidicoUis MacL, and L. riverince SI., by smaller 

 size, duller colour, two pallid apical maculae of elytra, basal part 

 of elytra impunctate (except for the punctures from which the 

 rows of setae rise). 



The described Australian species of Lachnothorax (L. globuli- 

 collis and L. riverince were described under the genus Casnonia) 

 may be tabulated as under : — 



A. Pronotum punctate; elytra regularly striate; length 8"5mm 



L. palustris SI. 



AA. Pronotum smooth with long setaj; elytra not striate (unless 

 near base, e.g., L. fiverhuv). 

 B. Prothorax red. 

 C. Elytra purplish-black, with a broad posthumeral and an 



apical macula red; length 7 '5 mm L. glohulicollis Macl. 



C. Elytra bluish -green, a single broad red fascia on apical half; 



length 7 mm L. riverince^l^ 



BB. Prothorax piceous-black or brown. Elytra piceous-black, 

 each elytron with a small posthumeral yellowish fascia, 

 and a pallid apical macula; length 5 mm ...L. formicoides SI. 



Note. — I believe the four species tabulated above are referable 

 to Motschulsky's genus Lach7iotho7'ax{\8G'2), and that Lachno- 

 thorax might well be considered a valid genus, distinct from 

 Casnonia. By their facies, short globose pi'othorax, haiiy tarsi, 

 etc., the four species of Lachnothorax are thoroughl}^ differen- 

 tiated from all other Australian species which have been referred 

 to Casnonia. 



Tribe Pericalini- 



Genus Catascopus. 



Catascopus BREVispiNosus, n.sp. 



Elongate-oval; prothorax a little wider at base(3'25 mm.) than 

 -at apex(3-l mm.), sides widely margined, strongly sinuate at 



