63 



t£ab. —Queensland : Cairns district (A. M. Lea). Type 

 (unique), I. 11839. 



One side of the prothorax of the type is gently incurved 

 to the middle, but the other is slightly dilated there, this 

 appears to be due to post-mortem contractions. The dark 

 part of the elytra is slightly dilated on the sides. At first 

 glance the type appears to be a specimen of T. froggatti, 

 with more of the apex of elytra black than usual ; but the 

 doubling of the central areolet associates it with T . insignis, 

 which is a much larger species, with part of the prothorax 

 black, and the black markings of elytra longitudinal instead 

 of apical ; the basal portion of the central areolet is half the 

 length of the segment, then there is a portion half its size, 

 and a carina connects this with the apex. 



DUMBRELLIA PILOSICORNIS, Lea. 



Two males, from Melville Island, appear to belong to 

 this species, but differ from the type in having more of the 

 apex of the elytra black : on one specimen occupying about 

 one-fourth of the elytra, on the other less about the suture, 

 but as much near the sides ; the prosternum and mesosternum 

 are flavous, and the head is moderately infuscated instead of 

 black; on one of them the head is flat between the eyes, on 

 the other there is a depression there, although not as deep 

 as on the type ; the differences are probably due to contractions 

 on drying. 



DUMBRELLIA MELANCHOLICA, n. sp. 



O . Sooty-black ;' head and prothorax somewhat shining. 



Head with a rather feeble median line, but ending in 

 front in a small, deep fovea. Antennae rather long and thin, 

 most of the joints cylindrical, second very small, third wider 

 than fourth, but somewhat shorter, the following ones to 

 tenth feebly decreasing in width, eleventh slightly longer than 

 tenth. Prothorax about twice as wide as long, apex gently 

 produced in middle, sides feebly increasing in width to base, 

 front angles obtuse, hind ones produced and acute, a narrow 

 deep transverse impression on each side of base, but isolated 

 from a small medio-basal impression; with rather large sub- 

 marginal punctures at sides and apex. Elytra thin and 

 parallel-sided; with almost regular rows of rather large, 

 rounded punctures. Length, 5*25 mm. 



Hab. — Queensland: Cairns district (A. M. Lea). Type 

 (unique), I. 11843. 



Readily distinguished from the two previously described 

 species by its entirely dark upper-surface; the deep median 

 line of the prothorax of these species is represented on the 

 present one by a basal fovea only. 



