76 Mr, D. Sharp s Contributions to the 



In tlic male the 6th dorsal segment is opacjvie and bears 

 a few obsolete tubercles; the dorsal plate of the 7th seg- 

 ment is ti-ansversely depressed along the middle, and 

 beyond the depression is produced as a large triangidar 

 plate, the apex of which is divided by a narrow slit; on 

 each side is a long pointed spine, directed inwards, and 

 attaining a similar length to that of the central ])late. 



A single male individual of this species was found in 

 fungus by Dr. Trail, at Garrao, on the river Jurua, on 

 the 1 1th of November, 1874. 



7. Gyrophcena sparsn, n. sp. Convexa, nitidula, picea, 

 antennarum basi, pedibusque testaceis ; abdomine basi 

 dilutiore; prothorace valde transverso, disco quadri- 

 punctato; elytris parce tuberculatis, versus angulos ex- 

 ternos tevibus. Long. corp. vix 1 lin. 



Antenna3 short and stout, the four basal joints yellow, 

 the others darker; 3rd joint very small, much smaller 

 than 2nd; 4th very minute; 5 — 10 very similar to one 

 another, rather strongly transverse ; 1 1th short and obtuse. 

 Head a good deal smaller than the thorax, pitchy, shining, 

 scarcely visibly punctured. Thorax strongly transverse, 

 much rounded at the base, which is a good deal emargi- 

 nate in the middle in the front of the scutellum; the sides 

 also a good deal rounded ; it is of a sliining, pitchy coloiir, 

 with four fine pimctures on the disc. Elytra a good deal 

 longer than the thorax, rather paler in colour, very 

 shining, with a few rather coarse elevated tubercles, which 

 however do not extend to the outer angles. Hind body 

 impimctate, pitchy yellow, with the penultimate segments 

 pitchy. Legs yellow. 



In the male the hind margin of the 7th segment of the 

 hind body forms in the middle a rather large triangular 

 projection, and at each outer angle has a curved, pointed 

 spine, which reaches a little further backwards than the 

 middle pi'ojection. 



Garrao; a single male found in fungus on the 1 1th of 

 November, 1874, by Dr. Trail. 



8. Gyrophccna quassa, n. sp. Picea, nitidula, antcnnis 

 pedibusque testaceis, illis basi quam apice diiutioribus, 

 abdomine rufo-obscuro, ante apicem piceo; prothorace 

 transverso, fere impunctato; elytris parce tubercidatis. 

 Long. corp. j^ lin. 



