LACHNOSTEENA. 207 



integro, toto capite sequaliter dense subconfluenter punctulato ; thorace sicut in L. molopia ante medium 

 dilatato et postice lateribus parallelis, angulis posticis subacutis, marginibus nullomodo crenatis, supra sat 

 dense punctulato, foveis duabus mediocribus ; elytris punctulatis et rugosis, costis elevatis. Ungues dente 

 inferiore paullo infra medium, parvo sed curvato. 



c? . Pygidium convexum, grosse confluenter punctatum, glabrum. "Venter leviter callosus, medio glaber, parum 

 punctulatus ; segmento 5° apice medio transversim depresso, 6° transversim depresso rugoso. Calcaria 

 postica elongata, libera. Antennarum clava elongata, articulis 2°-7 m eonjunctis paullo longior. 



2 • Pygidium convexum^ apice leviter depressum, grosse confluenter punctatum, glabrum. Yenter medio 

 glaber, sparse punctatus, segmentis 5° apice et 6° (piano) toto densius punctatis. 



Long. 18-19 millim. 



Hah. Mexico, Ciudad in Durango (Edge, Forrer). 



Three examples only. Evidently also an incipient species, but somewhat further 

 segregated than L. segregans and L. divertens from L. molopia. 



52. Lachnosterna ? 



Hob. Mexico, near the city (Flohr). 



A single example (female) of a small species distinct from all the foregoing. 



53. Lachnosterna ? 



Rah. Mexico, Oaxaca (Hoge). 



A single female example, similar to, but specifically distinct from, the preceding. 



54. Lachnosterna ? 



Rah. Mexico, near the city (Flohr). 



Also a single female only, whose affinities are not determinable. 



55. Lachnosterna ? 



Rah. Mexico, Matamoros Izucar, Puebla (Hoge). 



A single female example, apparently of a distinct species, allied to L. molopia. 



56. Lachnosterna nigerrima. (Tab. XI. fig. 17, s .) 



Breviter ovata, omnino nigerrima, glabra, nitida, pectore fulvo-villoso ; capite lato, toto dense subconfluenter 

 punctato, clypeo subsemicirculari, antice late obtuso et sinuato, paullo reflexo; thorace medio sat late 

 rotundato-dilatato, angulis anticis obtusis, posticis rectis, margine crenato, supra discrete punctulato, plaga 

 oblonga dorsali ltevi ; elytris (prascipue $ ) paullo ampliatis, coriaceis, discrete punctulatis. Venter breviter 

 sparsissime griseo-setosus. 



<$ . Pygidium paullo convexum, disperse punctulatum, glabrum. Venter medio late depressus ; segmento 5° 

 medio postice depresso et aspere punctulato, 6° basi convexo, lasvi, apice depresso punctato. Calcaria 

 postica libera. Ungues dente parvo, acuto, baud procul a basi sito. Antennarum clava parum elongata, 

 articulis 2°-7 m eonjunctis vix sequalis. 



c? var. Segmentum ventrale 6 m transverse depressum. 



