LACHNOSTERNA. 201 



is a little more approximate to the apical one in both sexes. The tawny-brown colour, 

 dense erect yellowish-tawny pile, and dense, moderately strong punctuation, distinguish 

 the species. 



V. Lower tooth of the claws as in IV., but situated below the middle, and inclined 

 towards the large basal dilatation. 



36. Lachnosterna rugipennis. (Tab. XI. fig. 12, d .) 



Lachnosterna rugipennis, Schauf. Stett. ent. Zeit. 1858, p. 318 \ 



Eab. Mexico 1 , Toxpam, Cordova (Salle), Jalapa, Misantla (Edge); Guatemala, 

 Purula (Champion) ; Panama, Chiriqui (Trotsch), Volcan de Chiriqui (Champion). 



A pruinose nearly glabrous species resembling L. rorulenta, but distinguished readily 

 by the tarsal claws being greatly dilated from the base to the lower tooth, which is 

 straight and at its base forms part of the dilatation. The male further differs from the 

 same sex of L. rorulenta and its allies by the long and freely articulated spurs of the 

 hind tibiae ; and by the abdomen being concave in the middle, with a deeply canali- 

 culated sixth segment, and a closely granulated patch on the hind part' of the fifth 

 segment. The pygidium is closely punctured and hairy in both sexes. In some 

 specimens of the female, especially those from Chiriqui, the elytra near the suture are 

 beset with very long erect tawny hairs. Most Mexican examples of the female show 

 no trace of these long hairs, but sometimes a few shorter similar hairs are seen near 

 the base and apex of the elytra. A male from Jalapa is figured. 



37. Lachnosterna Kssopyge, 



L. rugipenni proxhne affinis, forsan ejus varietas ; differt pygidio castaneo polito, brevissirae sparse et vix 



perspicue setoso : supra nigra, pruinosa, elytris discrete punctulatis. 

 Long. 22-25 millim. 



Eab. Nicaragua, Chontales (Belt) ; Panama, Volcan de Chiriqui (Champion). 

 Two males only. 



38. Lachnosterna hemilissa. (Tab. XI. fig. 13, $ .) 



L. rugipenni affinis, sed facies valde diversa. Elongato-oblonga, nigra, capite thoraceque politis, elytris solum 

 pruinosis, margine piceo-rufo ; subtus cum pedibus piceo-rufa ; clypeo fere semicirculari, margine antico 

 medio sinuato-reflexo, capite toto grosse punctato ; thorace multo densius quam in L. rugipenni punctato ; 

 elytris subrugulosis et sat dense umbilicato-punetulatis, costis paullo elevatis, punctis prope apicem 

 griseo-setulosis ; pygidio erecte longipiloso ; tibiis intus et tarsis subtus longe pilosis ; pectore flavo-villoso. 

 Ungues basi dilatati, dente inferiore recto postice spectanti, juxta dilatationem sito. 

 J . Pygidium valde regulariter convexum. Venter sicut in L. rugipenni medio cavatus, sed segmentis medio 

 setosis, 5° concavo, 6° concavo et canaliculate Calcaria postica elongata, libera. Tarsi subtus densius 

 pilosi. Antennarum clava valde elongata articuloque 7° intus acute producto. 

 $ . Pygidium triangulare vel conicum, juxta apicem planatum et utrinque bituberculatum, margine apicali 

 verticaliter arcuato. Venter segmento 6° magno, convexo, paucipunctato. 



Long. 21-24 millim. 



Eab. Panama, Chiriqui (Trotsch). Two examples only. 

 biol. cente.-amer., Coleopt., Vol. II. Pt. 2, April 1888. 2 DD 



