290 Dr. D. Sharp on 



yellowish red, with the terminal segments black, shining, 

 with some fine punctures at the base of each segment. 



Kioto, June 10th, 1881 ; one specimen. 



A distinct species of the subgenus Zyras. 



Myrmedonia particornis, n. sp. 



Capite cum antonnarum basi, elytris, pectore abdomiuisque apice 

 nigris ; thorace abdomiueque nifo-testaceis ; antennis estrorsum 

 albidis, pedibus flavis ; thorace subquadrato, obsolete punctato. 



Long. 5 millim. 



Antennse black at the base, the apical joints quite white, 

 fifth to tenth joints transverse. Head shining black, obso- 

 letely punctate. Thorax a good deal narrower than the 

 elytra, slightly broader than long, a little narrowed behind, 

 foveolate at the base in the middle, sparingly and obsoletely 

 punctured. Elytra slightly longer than the thorax, shining 

 black, coarsely, moderately closely punctate. tlind body 

 with a few fine punctures at the base of each segment. 



Kioto, July 2nd, 1881 ; one specimen. 



This also belongs to the subgenus Zyras ; it is very re- 

 markable on account of the colour of the antenuse. 



Myrmedonia picta. 



Ilyohates pictiis, Sharp, Trans. Ent. Soc. Lend. 1874, p. 11. 



This insect was met with again near Nagasaki. There are 

 only four joints in the front feet, so the species must be 

 removed to Myrmedonia and placed in the subgenus Zyras. 



Myrmedonia cognata^ yav.Japonica. 



Myrmedonia cognata, Markel, Stett. ent. Zeit. 1842, p. 142. 



On his previous visit to Japan Mr. Lewis found only a 

 single example of this insect ; but more recently he has pro- 

 cured a good series in the nests of Formica japonica at 

 Bukenji. These examples differ from European examples 

 of M. cognata in being of a more uniform and dark colour and 

 more densely punctate ; but as they agree in other respects I 

 prefer to treat them as a variety, though, if these slight cha- 

 racters prove to be constant when examples have been found 

 in other localities, the two forms may be really distinct. In 

 Europe M. cognata inhabits the nests of F. faliginosa, a species 

 closely allied to F. japonica. 



