Staphylinidce of the Amazon Voile?/. 421 



acute tubercle on each side, and behind this with two 

 coarse punctures on each side. Thorax scarcely 1^ hn. in 

 length by H "^ breadth. Elytra just as long as thorax, 

 with their inflexed margin rather coarsely punctured. 

 Hind body slender; on the upper side, at the base of each 

 segment, there are no punctures in the middle ; on the 

 imder side the basal segment is Avithout punctures m the 

 middle ; the following segments rather coarsely punctured 

 at the base; the 6th segment more sparingly than the 

 the others; metasternum with only ten or twelve "ot very 

 distinct punctures on each side, external to the middle 



Fonte Boa ; two individuals, communicated by Dr. 

 J. W. H. Trail, who captured them there on the 17th 

 October, 1874; and also found at Ega by Mr. Bates 



Ql,g^ /._This species, in the structure of its head and 

 mandibles, is very closely alHed to the Brazilian L. scoria- 

 ceus, Germ, but is much smaller and especially narrower ; 

 the antennae are considerably shorter, and the fine dense 

 punctuation found at the base of each of the two or three 

 front segments, on the upper side of L. scoriaceus, is 

 wanting. 



Obs. II.— 1 have drawn up the above description en- 

 tirely from one of the Fonte Boa individuals, which is, 

 I believe, a female ; the individuals from Ega, of which 

 several are before me, are slightly smaller, and show a 

 slightly greater development of the punctures on the under 

 side of hind body ; but these differences are only very 

 slight, and I believe all the individuals from both locahties 

 to be of one species. 



2. Leptochirus hninneoniger, Perty; Fauvel. 



Ega ; tAvo individuals. 



This appears to be a Avidely distributed, and yet but 

 little variable, species. I see no difference between these 

 Ega specimens and individuals from near Rio de Janeiro, 

 and the species is recorded by Fauvel as Mexican. I have 

 not myself seen any specimens from the north of the 

 Amazons ; on the other hand, an individual m my coUec- 

 tion is labelled " Peru." 



3. Leptochirus latro, n. sp. Niger, nitidus, thorace 

 sano-uineo; mandibulis brevibus ; antenms crassiusculis ; 

 vertice canaliculato, canaUcula antice profunda, clypeo 



