﻿264 LE CONTE.— SYNOPSIS OF THE 



3. L. obtusus, piceo-ferrugineus, oblongus, convexus, capite rotundato fortiter marginato, confertim 

 punctato, thoraceque nitidis, hoc sat dense punctato, lateribus rotundatis medio subangulatis, angulis 

 posticis obtusis rotundatis, inarginibus et ad basin longe piloso, elytris glauco-pruinosis vage punctatis, 

 versus basin longe pilosis ad marginem parce pilosis ; pectore villoso ; calcare externo postico fere 

 duplo latiore et longiore, tarsis posticis tibiis vix longioribus. Long. -55. 



Mas notis sexus sicut in praecedentibus. 



One specimen found by me in Kansas, near Platte River. More robust and less 

 cylindrical than the preceding species, with the sides of the thorax less angulated. 

 Some of the hairs about the base of the thorax arise from the disc, and the hairs near 

 the base of the elytra are longer than in the other species, and the punctures behind 

 the middle are almost without hairs. The spurs of the posterior tibiae are as in the 

 preceding. 



B. Tibise posticse unicoronatae : tarsi postici tibiis baud longiores. 



4. L. f a 1 s u s, convexus ferrugineus, capite rotundato, antice vix sinuato marginato, fortiter punctato parce 



piloso, thorace punctato, lateribus serratis obtuse angulatis, angulis posticis obtusis sub rotundatis, elytris 

 glauco-pruinosis, obsolete tricostatis, parcius punctatis, parce pilosis ; lateribus et thoracis basi longe 

 parce setosus, pectore villoso, calcaribus posticis angustis externo longiore. Long. -54 — -59. 



Mas cylindricus elongatus, clava antennarum funiculo longiore; pygidio magis convexo, abdomine late con- 

 cavo, articulis 5to et 6to medio canaliculatis ; unguiculis dente medio minuto armatis vix obsolete 

 serratis, interno anteriore edentato. 



Femina subovata; pygidio paulo convexo, abdomine tumido, medio polito; unguiculis omnibus medio dente 

 parvo acuto armatis, obsolete serratis. 



Platte River, Kansas. This species, though having all the external appearance of 

 the others, by its characters approaches so near to Lachnosterna as to suggest a doubt 

 whether the two genera should properly remain distinct. 



5. L. f imbripes, subovata, convexa, ferruginea, capite rotundato, antice subsinuato, marginato, fortiter 



punctato, parce piloso, thorace punctato, lateribus obtuse angulatis, angulis posticis obtusis rotundatis, 

 elytris subpruinosis parce punctatis vix breviter pilosis ; lateribus et thoracis basi parce longe setosus, 

 pectore villoso, tibiis tarsisque posticis intus lcnge laxe pilosis calcaribus posticis angustis. Long. -48. 

 Mas antennarum clava funiculo fere longiore; abdomine medio fere piano, segmentis 5 et 6 leviter cana- 

 liculatis; unguiculis obsolete serratis minime dentatis. 



One specimen, Fort Riley, Kansas, Dr. W. A. Hammond, U. S. A. Somewhat 

 more robust than the preceding species. 



6. L- s c o p a r i u s, elongatus, cylindricus, piceo-rufus, capite rotundato fortiter marginato, antice vix sinuato, 



fortiter punctato, thorace punctato, lateribus subserratis angulatis, angulis posticis obtusis haud rotun- 

 datis, elytris parce punctatis et pilosis, glauco-pruinosis : marginibus longe parce pilosis, pectore dense 

 villoso, tibiis posticis intus longe, tarsis posticis subtus densissime villosis ; calcaribus posticis angustis. 

 Long. -61. 



Mas antennarum clava funiculo haud longiore ; propygidio fere nudo, pygidio maiore valde convexo ; ab- 

 dominis segmento 6to subtus producto et acute longe bidentato ; unguiculis fortius pectinatis. 

 Sonora, near the Boundary line, Mr. Arthur Schott. From the curious characters 



of the abdomen and posterior tarsi, I was strongly tempted to consider this as a 



