LAMELLICOKNIA, 401 



convergentibus (nee subparallelis). Antennae 9-articulatae ; clava tf gracilis, caeteris articulis conjunctis 

 subsequalis. 

 Long. 11-12 millim. J $ . 



Eab. Mexico, Omilteme in Guerrero 8000 feet, Chilpancingo 4600 feet (H. H. 

 Smith). 



The similarity in form and coloration — chestnut-brown, with broad lateral (marginal) 

 thoracic vitta testaceous-yellow — and, especially, the very similar sexual characters in the 

 pygidium and abdomen, render it doubtful if this is a distinct species from P.Jissilabris. 

 But the difference in the volume and convexity of the eyes, and the flatter, broader, and 

 less sharply sinuated clypeus being constant in the large series of specimens taken at 

 Omilteme, and confirmed by the much closer and finer sculpture, I consider it necessary 

 to treat them as a separate specific form. 



LACHNOSTERNA (p. 185). 

 2 (a). Lachnosterna baroni. (Tab. XXIV. fig. 15, s .) 



L. heteronychce proxime afflnis, sed magis elongata fulvo-pubescens et corpore supra longe Mvo-piloso, pectore 

 fulvo-villoso ; caput magnum, grosse scabroso-punctatum, yertice lsevi fronteque subito declivi, clypeo 

 subsemicirculari apice obtuse truncato et sinuato, margine paullo reflexo ; tborax medio sat valde vix 

 angulatim dilatatus, angulis posticis obtusis, dense sed discrete punctulatus, margine basali medio longe 

 fulvo-penicillato ; elytra dense sat subtiliter punctulata, striis punctatis nullis ; ungues dente inferiore 

 lato apud medium denteque basali proximo lato vix breviore. 

 c? . Pygidium amplum, convexum, setifero-punctulatum. Venter medio depressus, sat dense setifero-punctulatus ; 

 segmento 6° subdepresso, densius et longius setoso. Antennae 10-articulatae, clava gracili articulis l°-7 m 

 conjunctis paullo longiore, articulis 3°-5 m parum elongatis intus convexis, 6° et 7° intus acute productis. 

 5 . Pygidium paullo elongatum, apice convexum, setifero-punctulatum. Venter convexus, sat dense setifero- 

 punctulatus, segmento 6° convexiore et grossius punctate Antennae sicut in $ sed clava parva. 



Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith), Mochitlan in Guerrero 

 {Baron). 



Mr. Smith obtained one example only, a well-preserved male. The female is also 

 described from a single somewhat abraded specimen sent by Mr. Harford from Baron's 

 collection. 



4 (a). Lachnosterna rostripyga. (Tab. XXI v. fig. 16, d .) 



L. piceolce quoad formam et sculpturam simillima, colore differt solum corpore toto rufo-castaneo. Caput 

 grossissime subalveolato-punctatum, vertice laevi, fronte abrupte declivi, longe pilosa, clypeo utrinque 

 rotundato, margine paullulum reflexo antice medio sat fortiter sinuato ; tborax medio sublobatim dilatatus, 

 margine laterali distanter crenato et setifero, pose dilatationem sinuato, angulis posticis rectis, grosse 

 spatiose punctatus punctis minoribus intermixtis; eljtra punctulata, versus suturam. antice subtiliter 

 rugulosa, postice laeviora parce longe pilosa : pectus fulvo-pilosus. Ungues latius quam in L. piceola fissi, 

 dente inferiore latiore, apice oblique truncato, dente basali brevissimo et obtusissimo. 

 3 . Pygidium mediocriter convexum, grossissime hie illic spatiose punctatum, glabrum. Venter medio convexus 

 laevissimus, segmento 5° apice medio depresso setifero-punctulato, 6° sat elongato, medio transversim 

 concavo et grossius punctato. 



biol. centr.-amee., Coleopt., Vol. II. Pt 2, December 1889. 3 FF 



