1889.] 397 



ON A NEW SPECIES OF TERETRIOSOMA, HORN. 



BY G. LEWIS, F.L.S. 



Tereteiosoha Hoeni, n. sp. 



Cylindricum, viride, metallicum, undique sat dense punctatum, suhtus 



minutissime strigoso-rugosum ; antennis pedibusque obscure rufis; f route 



parum convexa ; pronoto stria Integra ; elytris transversim basi impressis ; 



pygidio in medio leviter conigero, infra concavo ; prosterno lato in medio haud 



striato. striis marginalibus validis, rectis, antice sensim divaricatibus, lobo 



subtruncato; mesosterno antice marginato; tibiis anticis mediisque 6-dentatis. 



Length, 2| mm. 



This species in colour is like T. virens, Mars., and it resembles it also in structure, 

 but it may be known from it by the following characters : — It is longer and narrower 

 in proportion to its width ; the transverse ridge of the pygidium, which divides the 

 concave from the convex portion (easiest seen from beneath), shows a slight but 

 distinct tendency to being conical in the middle ; the prosternal lateral margins 

 are more distinctly elevated, are straighter and diverge gradually to the edge of the 

 lobe ; the lobe is more truncate, and the meso- and meta-sternal plates (corresponding 

 with the greater length of the whole insect) are very distinctly longer. The antennae 

 have the scape clothed with greyish hairs like T. virens, Mars., but the pubescence 

 is not conspicuous as in T. cyaneum, Lewis. In Teretriosoma virens the outline of 

 the ridge of the pygidium is semi-circular. 



The generic character for Teretriosoma given by Horn, " presternum 

 without striae," is a salient one, and will serve to distinguish all the 

 species from Teretrius. Teretriosoma now contains twelve species ; 

 besides two in my collection yet uncharacterized, ten are from America, 

 one, facetum, Lewis, from India and Ceylon, and one, T. Somerseti, 

 Marseul, from Australia. Whether the boss on the pygidium is a sexual 

 character or not is an open question, as I have only one example. 



This interesting addition to the American Fauna is from Key 

 West, Florida, and has been taken on a species of Rhus, which was 

 doubtless infested with wood-boring beetles. Dr. G-eo. H. Horn has 

 kindly sent me an example with permission to describe it, and it is 

 with a feeling of indebtedness for it and much general entomological 

 information that I have named it after him. 



Queen's Ride, Barnes : 



August, 1889. 



ON A SPECIES OP AMBLYOPUS (EROTYLIBM) FROM JAPAN. 

 BY G. LEWIS, E.L.S. 



Amblyopus palmipes, n. sp. 



Oblong o-ovatus, parum convexus, nitidus ; fronte thoraceque rufis ; 



scutello rufo nigro-marginato ; elytris nigris punctato-striatis ; subhis testaceo- 



rufus, metasterno nigro ; pedibus nigris apice triangulariter dilatatis. 



Length, 5$ — 6 mm. 



