PSILOPTEEA.— DICEECA. 1 L 



12. Psiloptera cupreo-aenea. 



Buprestis cupreo-amea, Latr. Voy. Humb. Ins. ii. p. 60, pi. 34. f. 5 ; Lap. & Gory, Mon. iv. Suppl. 

 p. 91, t. 16. f. 88. 



Hah. Centeal Amekica. 



I am not acquainted with this species. 



33. Psiloptera dilaticollis. (Tab. I. fig. 15.) 



Yiolaceo-uigra, subtus violacea, depressa; thorace lato, postice sinuatim angustato, opaco, disco lsevi, lateribus 

 crebre fortiter punctatis, basi fossa rotundata impressa ; elytris punctato-striatis, striis parum impressis, 

 maculis plurimis auratis punctatis et pilosis notatis. 



Long. 11-15 lin. 



Hob. Mexico, Hacienda de Bleados, San Luis Potosi, Sierra de San Miguelito 

 (Br. Palmer). 



The head is very strongly and rugosely punctured. The disk of the thorax has 

 sometimes two or three strong punctures ; there is a slight median impression, which 

 terminates posteriorly in a deep fossa. The striae of the elytra are strongly punctured, 

 scarcely impressed on the back, but more so at the sides ; the apex of each elytron is 

 slightly obliquely sinuate, the sutural angle somewhat dentiform. The brassy spots are 

 placed very irregularly, but have a tendency to unite transversely. All the underside 

 is closely and strongly punctured, of a deep violet-blue, with a little brassy colour on 

 the sterna and base of the abdomen. The prosternal process has only two or three 

 punctures. The posterior coxse have their posterior exterior margin finely punctured. 



This species should be placed near P. tucumana. 



DICEECA. 



Dicerca, Eschscholtz, Zool. Atl. i. p. 9 (1829) . . 



The species of this genus are principally found in North America, Europe, and 

 Siberia ; but some are recorded from Senegal, Brazil, Peru, and Chili. 



l. Dicerca inconspicua. 



D. cenece affinis et similis, griseo-nigra, senescens ; thorace linea mediana angusta laevi, elytrorum marginibus 



maculis duabus impressis subtiliter punctulatis. 

 Long. 10 lin. 



Eab. Mexico (Edge, Flohr). 



So near is D. inconspicua to B. amea (Linn.) that at first sight it might be taken for 

 a variety of that insect. The form is nearly the same, with the thorax less angular at 

 the sides than is usual in that species, and with the apex of each elytron a little more 

 oblique and the external angle less produced. The sculpture is similar ; but that on 

 the thorax is perhaps a little less coarse, and there is a fine, smooth, raised median line. 

 The punctuation of the interstices of the elytra is less strong and less rugose ; and the 



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