78 Mr. D. Sharp's Contributions to the 



7th segment of the hind body forms a very acute tooth in 

 the middle, and at each outer angle has a stout, elongate, 

 ])ointed spine, which is distinctly curved inwards and pro- 

 jects much farther back than the central tooth. 



Gan-ao; a single male found in fungus 11th November, 

 1874, by Dr. Trail. 



10. Gyrophccna boops, n. sp. Rufo-testacea, nitida, 

 capitc, elytris(humeris exceptis) abdominecpie ante apicem 

 nigricantibus ; oculis maximis ; capite thoraceque fere im- 

 punctatis ; elytris abdomineque parce pvmctatis, pubes- 

 centia sparsa distincta. Long. corp. 11 lin. 



Antennce rather slender and moderately long, yellow ; 

 3rd joint more slender and distinctly shorter than the 

 2nd; 4th joint only a little smaller than the 5th; 5 — 10 

 only differing slightly from one another in width and 

 scarcely at all in length, the 5th about as long as 

 broad, the 10th a little transverse; 11th moderately 

 long, pointed. Head blackish, the eyes exceedingly 

 large and convex, occupying the whole side of the 

 head, coarsely facetted ; the space between them is quite 

 parallel-sided, shining, and almost impunctate. Thorax 

 very strongly transverse, more than twice as broad as 

 long, slightly narrowed behind, the base roimded; it is 

 of a shining-yellowish colour, and is almost impunctate. 

 Elytra a good deal longer than the thorax, shining, black- 

 ish, with the humeral angles yellow, Avith a very few, fine, 

 setigerous punctures. Hind body yellow, with the penul- 

 timate segments blackish, the segments very finely and 

 spai'ingly punctured, and also sparingly pubescent. Legs 

 clear }'ellow. 



In the male the elytra bear each near their hind margin 

 two tubercles, one near each angle ; the dorsal ])late of 

 the Oth segment of the hind body bears in the middle, at 

 the base, an oblong, large, shallow impression ; the hind 

 margin of the following segment exhibits an obtuse, 

 tubercle-like ]irojection in the middle, and on each side 

 a very short spine. 



Rio Purus, l.'3th October, 1874; a fine sei-ies brought 

 by Dr. Trail ; also an individual from Ega found by 

 Mr. Bates ; and yet another, found at Garrao, on the 

 11th November, 1874, in fungus, by Dr. Trail. 



O/a";. — This s})ccies varies considerably in size, some- 

 what in colour and sciil[»ture, and a good deal in the 

 secondarv sexual characters of the male : the individual 



