StaphijUnidcB of the Amazon Valley. 73 



have come to pieces in the spii'it in which they were pre- 



'"'ot'-ThiB minute insect is smaUer than the European 

 G boieti and in size scarcely equals our smaUest Ohgot^. 

 I find it not easy to see with distinctness the form of the 

 hind margin of 7th segment, but I beheve the dorsal plate 

 has tbehtV margin^ little obtusely promment m the 

 middle, and has a curved spme on each side. 



2 GvropJmna parvula, n. sp. Nigro-fusca, nitidula 

 fere W elytris^parce punctatis, antenms pedibusque 

 Stacel" 'prolhorac'e valfe transverso, basx et laterxbus 

 rotundatis. Long. corp. i hn. , , ^ ^-k 



This species is extremely similar to G.pumila, but the 

 elyla axrire distinctly', and not qmte so sparmgly 

 strewed with punctures, which on exammation with a high 

 30wl appeyto me to be fine elevated granules; besides 

 iMlitT larger and broader, with the head especiaUy a 

 good deal broader ; in other respects it appears extremely 



"^^^'Hm found on the Rio Purus with 

 G. pumila by Dr. Trail. 



3 Gvroph<Bna parca, n. sp. Nigro-fusca, nitida, an- 

 tennis Ci basi ^pedibusque testaceis; P--nne P-nC: 

 tata, prothorace .valde transverso, disco subtilitei quadn 

 pimctato. Long. corp. I Im. ^ 



Antenna, short and stout ; the four basal joints yeUow 

 the others infuscate ; 3rd jomt much smaller than 2nd its 

 basal portion constricted ; 4th joint extremely small ; 5- 

 iS s mUar to one another, each rather strongly transverse 

 1 ItHbort and obtuse. Head broad, but a good deal 

 i t^er than thorax, shining black, .jath a few very 

 fir,^ -nnnrtures- the eyes moderately large. ilioiax 

 stToni^^ tilnsv^^^^^^ much rounded at the base, and dis- 

 trctlvna -rowed towards the front; pitchy very shming, 

 SC finTpunctures on the middle placed so as to 

 form rtiTcorneis of a square. Elytra short, bu a good 

 taTlonoer than the thorax, pitchy, shilling, with a very 

 Iw inSict punctures. Hind body V^^^^J ^ ^^^'^^l^^, 

 at the base and extremity; almost ^^ipunctate ^^t not 

 ouite so shining as the anterior parts. Legs yellow, 

 ^"in the male^the hind margin of the ^o-l pkte ^^^^^^^ 



7th segment of the hind body is produced m the middle so 



