186 LAMELLICOKNIA. 



years' collecting. It reappears, however, in numerous species in South Brazil. In the 

 Old World it is spread over Eastern and South-eastern Asia, and a few species have 

 been described from islands in the Indian Ocean and also from West Africa. 



I. Claws broadly cleft, or with the lower tooth situated above the middle of the claw ; 

 base broadly dilated or toothed ; the three dentiform processes more or less closely 

 approximated. 



In the species included in this section the margin of the clypeus is generally a little 

 renexed and notched in the middle, and the thorax coarsely punctured and broadly 

 dilated. 



1. Lachnosterna castaniella. (Tab. X. fig. 18, <s .) 



L. parimipunctatce similis ; minor, castanea, nitida (capite thoraceque interdum obscurioribus) ; subtus cum 

 antennis pedibusque fulvo-rufa ; clypeo subsemicirculari, margine parum reflexo medio anguste sinuato ; 

 capite toto grosse et dense subconfluenter punctato ; thorace valde dilatato-subproducto, disperse medio- 

 criter grosse punctato ; scutello parce subtiliter punctato ; elytris postice paullo ampliatis, sat dense 

 punctulatis, prope suturam rugulosis ; pectore fulvo-villoso. 



c? . Pygidium apice obtuse truncatum, medio plus minusve late sulcatum, utrinque convexum, glabrum, politum, 

 sparse punctulatum. Venter medio paullo depressus, fere lsevi3, segmento 5° apice medio plaga parva 

 granulata, margine postice valde arcuatim emarginato, 6° magno, medio depresso, granulato et erecte piloso. 

 Calcaria postica libera. Ungues basi haud dentati sed dimidio basali asqualiter dilatato, dentibus duobus 

 apicalibus subparallelis, inf'eriore obtuso et multo breviore latioreque. Antenuarum clava valde elongata, 

 cseteris articulis conjunctis longior. 



$. Pygidium sicut in <$ , sed longior, basi convexum. Venter convexus, medio lsevis, segmento 6° magno, 

 convexo, 5° et 6° setifero-punctulatis. Ungues a J 1 haud diversi, dente inferiore excepto ab apicali magis 

 distanti. 



Long. 11-12 millim. 



Hab. Mexico, Atenquique in Jalisco (Edge). Ten examples. 



2. Lachnosterna heteronycha. ('Tab. x. fig. 19, 6 .) 



Parva, oblonga, postice latior, fulvo- castanea, undique sat longe, apud thoracem elytrorunique basin longissime, 

 fulvo-hirsuta, dense (thorace paullo grossius) panctulata; clypeo mediocri subquadrato, lateribus angulisque 

 rotundatis, margine antico paullo reflexo et sinuato, fronte declivi, plana, grosse scabrosa, supra transversim 

 obtuse carinata, occipite lsevi polito ; thorace post medium angulatim dilatato, antice sinuatim angustato, 

 angulis anticis acutis, posticis subrectis ; elytris ecostatis ; pectore pedibusque longe hirsutis. Antennas 

 1 (Particulate, articulis 3°-5 m paullo elongatis, 6° et 7° brevissimis. Ungues apice late fissi, dente inferiore 

 multo latiore, paullo breviore et deflexo ; basi 2 posticorum gradatim modice, 4 anteriorum grossissime 

 angulatim, dilatati. 



3 . Pygidium convexum, sat dense punctulatum et longe erecte hirsutum, apice explanatum margineque acute 

 reflexo. Venter medio depressus, sat sparsim punctato-setulosus, segmento 5° fovea lata densius punc - 

 tulata, 6° brevi, grosse punctato, canaliculate. Calcaria postica libera. Antennarum clava cseteris 

 articulis conjunctis longior. 



2 . Pygidium sicut in d 1 . Venter segmentis 2°-5 m sat dense erecte hirsutis. 

 Long. 12-13 millim. 



Eab. Mexico, Yolos (Salle), Mexico city, Jalapa (Edge). 

 A specimen from Mexico city is figured. 



