Stai>liyUnid(C of the Amazon VuUeij. 189 



this latter red at the extreme base ; joints 4 — 10 strongly 

 transverse, scarcely differing in length. Mandibles abont 

 half as long as the head. Head slightly narrower than 

 the thorax, considerably longer than broad, oblong, the 

 hind angles mnch rounded, but the sides straight; above 

 black, and quite dull, with a very faint brassy tinge, ex- 

 tremely densely and finely rugulose-puuctate, with a very 

 dense, short and fine erect pubescence ; lateral grooves 

 broad, shallow and densely punctured, these limited on 

 the miderside by a smooth, rather elevated line, the rest 

 of the under stirface coarsely and numerously punctured ; 

 punctuation at the hinder part fine and dense, passing 

 gradually into that of the upper surface. Thorax about 

 two-thirds of the Avidth of the elytra ; its length quite one 

 and a half times its Avidth, slightly broader from the base 

 to a little in front of the middle, thence much narroAved 

 and rounded to the front, extremely densely and finely 

 punctured, Avith an extremely short and fine, erect pubes- 

 cence, quite dull, Avith a middle line smooth, shining and 

 impunctate; it is also slightly transA-ersely impressed some 

 distance in front of the base, and in this transverse impres- 

 sion the smooth middle line is very nearly inteiTnpted ; it 

 is similar in colour to the head. Elytra Avith their greatest 

 length {i. e., measured from the humeral angle to the outer 

 apical angle) just equal to that of the thorax, extremely 

 densely and finely pmicturcd and pubescent, opaque black. 

 Hind body rather shining, brassy black, extremely finely 

 and rather closely punctured, and delicately pubescent. 

 Legs blackish, the tarsi pitchy ; the inside of the tibite 

 Avith a dense-gre}^ pubescence. 



Ega ; four specimens ; sex unknoAvn. 



Ohs. — This species is clearly closely allied to S. formi- 

 caria, Er., but contradicts his description in several im- 

 portant points. S.formicaria Avas originally described by 

 Laporte, but his description and figure are quite Avorthless, 

 and it is impossible to decide Avhether they relate to Erich- 

 son's species or not. Erichson places as synonyms of 

 S.formicaria, ih.Q flag elli cor nis and puhescens of Nord- 

 mann ; these tAvo descriptions are very carefully drawn up 

 by Nordmann, and it appears to me clear that they refer 

 to tAvo distinct species, and are erroneously united by 

 Erichson under the name oi formicaria. Hence I con- 

 sider the nsime for micaj'ia should be entirely dropped, and 

 Nordmann's flagellicornis be used instead, leaA'ing it to a 

 comparison of the types (in the Museum at Berlin, sec. 



