202 LAMELLICOENIA. 



39. Lachnosterna schizorhina. (Tab. XI. fig. 14, <? .) 



Latius oblonga, minus convexa, nigra vel castanea, polita, supra nuda, pectore fulvo-villoso ; clypeo sat parvo, 

 biarcuato, antice medio profunde inciso, margine reflexo, toto capite discrete punctato ; thorace medio 

 subangulatim dilatato, utrinque prope angulum acutum anticum late depresso, supra sat dense rotundato- 

 punctato, iinea dorsali lsevi ; elytris punctatis, costis elevatis. 



c? . Pygidium parum convexum, punctatum, nudum. Venter valde convexus, medio vage canaliculars, parum 

 punctulatus, segmento 5° postice medio declivo et dense granulato, 6° medio transversim concavo. Calcaria 

 postica elongata, libera. Ungues dimidio basali dilatato, dente inferiore recto parvoque juxta dilata- 

 tionem sito. 



Long. 22-24 millim. 



Hob. Nicaeagua, Chontales (Belt) ; Panama, Chiriqui (Trbtsch). 



There are three examples only of this fine species, all males. In all three the elytra 

 cover the base of the pygidium, but this may be accidental. A Nicaraguan specimen 

 is figured. 



40. Lachnosterna tenuipilis, 



L. gigantecB subsimilis, sed valde differt inter aba unguibus basi late dilatatis. Oblonga, castaneo-rufa, rufo- 

 fusca vel nigra, opaca, subtilissime et densissime punctulata et breviter subrecumbeute griseo-pilosa, 

 sericeo-nitens ; capite grosse subconfluenter punctato, fronte breviter setosa, clypeo transverso, extus late 

 rotundato, margine antico reflexo et leviter sinuato ; elytris costis obtuse elevatis ; pectore dense fulvo- 

 hirto. 



3 . Pygidium parum convexum, breviter erecte pilosum, ante apicem margineque longe setosis. Tenter medio 

 late canaliculars, dense punctulato-pilosus, segmento 5° simplici, 6° piano grosse punctato. Calcaria 

 postica lata, compressa, libera. Ungues basi late dilatati, dente brevi acuto proximo, versus basin inclinato, 

 dente apicali curvato longe libero. Antennarum clava elongata, articulis 2°-7 m conjunctis asqualis. 



$ . Pygidium sicut in tf . Venter convexus, densissime punctulato-pilosus, segmento 6° majore, convexo, grosse 

 punctato. Ungues dente mediano quam in S longiore sed dilatatione basali approximato. 



Long. 20-23 millim. 



Hab. Mexico, Orizaba, Teapa, Playa Vicente, Juquila (Salle) ; Guatemala, Aceituno 

 (Champion) ; Nicaeagua, Chontales (Belt). Eight examples. 



In the minute dense punctuation and fine short laid pubescence this Lachnosterna 

 is similar to L. gigantea, black examples being scarcely distinguishable from small 

 individuals of that species of the same colour. But the male sexual characters are 

 totally different and the claws show a much closer approximation to the basal dilatation 

 of the middle tooth, which in the male is short, inclined towards the base, and 

 separated from the large broad basal tooth only by a narrow cleft. 



41. Lachnosterna scissa. 



Elongato-oblongo-ovata, nigra, elytris partim obscure rufescentibus, glaberrima sed leviter lacteo-opalescens, 

 subtus piceo-rufa; capite lato, oculis maximis, clypeo valde transverso utrinque late rotundato, margine 

 antico naullo reflexo, medio sinuato, dense punctato ; fronte sparsissime grosse punctata; labro crasso, sicut 

 in SeJiizonychis nonnullis medio profunde scisso; tborace brevi, medio dilatato, angulis obtusis, margine 

 baud perspicue crenato, dorso discrete punctulato, interstitiis Iambus; scutello parum punctato; elytris 

 minus dense ruguloso-punctulatis. Antenna 10-articulatse, clava <S 2 brevi, articulis 6 vel 7 praecedentibus 

 multo latioribus baud productis. Venter 6 $ convexus, glaber, segmento 5° utrinque fulvo-barbato 

 excepto. 



