LACOTOSTEKNA. 209 



Blanch., from Toluca, in the Salle collection, may possibly belong to this species, but 

 they differ considerably. 



59. Lachnosterna rubella. 



L. integrce (Say) valde affinis et forsan ejus varietas geographica ; differt multo minore, supra densius punctu- 

 lata, pracipue elytris densissime ruguloso-punctatis. Breviter ovata, fulvo-rufa (raro castanea), breviter 

 setosa, fronte, thorace, elytrorum basi et pygidio longissime hirtis ; capite baud semicirculari, magia 

 transverso, utrinque latius rotuudato, supra concavo, margine reflexo integro. Ungues dente parvo acuto 

 post medium, basi haud dilatati. 



d . Venter sicut in L. anodentata, segmento 6° margine antico medio dilatato bidentato, dentibus plerumque 

 vix elevatis vel sub margine segmenti 5 1 occultis. Antennarum clava cseteris articulis conjunctis multo 

 longior. 



Long. 11-15 millim. 



Eab. Mextco, Toluca, Amecameca in Morelos, Pachuca in Hidalgo {Edge). 



Among the very numerous examples examined of this insect there are a few males in 

 which the sixth ventral segment scarcely differs from that of L. Integra; in all, 

 however, of both sexes, the shape of the clypeus is different, and this (in addition to the 

 smaller size and much closer rugulose punctuation of the elytra, on which there is no 

 trace of pruinosity) renders it necessary to distinguish the form by a separate name and 

 description. The four examples of L. anodentata are larger and more elongate-oblong 

 in form. 



60. Lachnosterna misteca. (Tab. XL fig. 18, s var.) 



L. integrce (Say) valde affinis, differt prsecipue antennarum clava in S multo minore ceeteris articulis conjunctis 

 breviore ; capite majore (clypeo semicirculari margine integro), colore supra obscuriore subcastaneo, 

 pruinoso, punctis thoracis sparsioribus. 



cJ 5 . Pygidium parum convexum, puuctulato-setiferum, ante apicem et ad marginem apicalem setis nonnullis 

 multo longioribus. 



Long. 15-20 millim. 



Hah. Mexico, Etla, Juquila, Oaxaca (Salle), Jalapa, Las Vigas, Mexico city (Edge). 



Var. J. Tenter sicut in L. Integra $ , medio convexus, lsevis, plus minusve canaliculars, segmento 5° medio 

 plaga obscuriore dense granulata, apice depresso, 6° margine anteriore depresso nee producto. 



Eab. Mexico, Puebla (Salle), Las Vigas (Edge). 



I adopt the name L. misteca, Chevr. (MS.), given to the species in the Salle 

 collection. An example from Puebla of the male variety is figured. 



61. Lachnosterna longipilosa. 



L. Integra; et L. mistecee affinis, sed Phytalo pruinoso similior ; differt <$ ventris segmento 5° margine anteriore 

 elevato, dilatato, medio inciso etc. Nigra, piceo-nigra vel fusco-castanea, pruinosa, elytris setis griseis 

 brevissimis, fronte, thorace antice elytrisque basi et juxta suturam longissime pilosis ; clypeo sicut in 

 L. integra, sed margine antico minus elevato et distincte sinuato, fronte grosse scabrosa ; thorace medio 

 sat angulatim dilatato, antice recte angustato, angulis anticis acutis, margine grosse crenato, disperse 

 punctato, punctis breviter griseo-setiferis, punctis majoribus pilis valde elongatis emittentibus ; pectore 

 fulvo-cinereo villoso ; abdomine lateribus sericeo-pruinosis, antennis pedibusque testaceo-rufis. Ungues 

 versus basin breviter ( 5 longius robustiusque) recte acute dentati, basi parum dilatati. 



biol. CENTK.-AMEE., Coleopt., Vol. II. Pt. 2, April 1888. 2 EE 



