LACHNOSTEKNA. 203 



c? . Pygidium convexum, passim minus grosse punctatum, nitidum. Yenter convexus, suturis haud deletis, 

 sparsim punctulatus ; segmento 5° apice depresso, transversim sulculato ; 6° transversim concavo, ruguloso, 

 marginibus elevatis. Calcaria postica elongata, libera. Ungues valde curvati, basi dentato-dilatati et 

 juxta dilatationem dente angusto brevi retrorsum inclinato. 



$ . Pygidium basi convexum, post medium depressum, punctatum, glabrum. Venter fere sicut in c? , sed 

 segmento 5° medio apice haud depresso, 6° convexo, grosse punctate 



Long. 18 millim. 



Hab. Mexico, Cordova (Salle). 



42. Lachnosterna ? 



Hab. Mexico, Panistlahuaca (Salle). 



A single female example of a species closely resembling L. scissa, but differing in the 

 form of the pygidium and claws. 



43. Lachnosterna anguHcollis. 



L. cribricolli multo major, quoad tboracem subsimilis sed differt unguibus gracilioribus apice longe liberis 

 denteque parvo infra medium, dente minore basali paullo remoto. Elongato-oblongo-ovata, haud dilatata, 

 testaceo-rufa, nitida, nuda ; clypeo utrinque late rotundato, apice medio breviter inciso, capite toto grosse 

 dense scabroso-punctato, fronte barbata ■ tborace medio subangulatim dilatato, margine crenato antice 

 recte postice rotundatim angustato angulis obtusis, dense discrete mediocriter punctato ; elytris ruguloso- 

 punctatis, costis vix perspicuis ; pectore dense aureo-fulvo villoso. 



d . Pygidium mediocriter convexum, discrete punctulatum, nudum. Yenter convexus, medio leevi, segmento 5° 

 medio planato sat dense punctulato, 6° medio transverse concavo, margine apicali late refiexo et medio 

 inciso, punctulato. Calcaria postica elongata, libera. Ungues basi breviter dilatati, dente inferiore infra 

 medium brevi acuto, dente apicali elongato. Antennarum clava elongata, cseteris articulis conjunctis 

 fere aequalis. 



5 . Pygidium basi subconvexum, prope apicem transverse depressum, margine apicali refiexo, punctulatum, 

 nudum. Yenter convexus, laevis, sparse punctulatus ; segmento 5° margine postico depresso, 6° convexo, 

 punctato. 



Long. 18-21 millim. 



Hab. Mexico, Jacale, Parada (Salle). 



Var. Caput et thorax nigra, antennarum clava brevior. 



Hab. Mexico, Jalapa, Las Vigas (Hbge). 



Two examples of the unicolorous typical form and four of the variety. 

 I adopt the name the species bears in the Salle collection. 



44. Lachnosterna rugulosa. (Tab. xi. fig. 15, 6 .) 



Ancylonycha rugulosa, Blanch. Cat. Coll. Ent. i. p. 134 \ 



Hab. Mexico \ Tuxtla, Orizaba (Salle), Jalapa (Hoge) ; Guatemala, Purula (Cham- 

 pion). 



A metallic species, varying from brassy-black or b rown to dark brassy-green and rich 

 coppery-brown. It is almost glabrous above, having only a scanty clothing of short 

 subrecumbent grey hairs, mostly arranged in rows on the elytra. The sculpture is 



2DD2 



