540 Mr. Vigors on some new subjects of Zoology. 



subnitida . Tibice anticae quatuor dentibus instructae, tribus anticis 

 acutis, quarts fere obsoleta. 



Long. Corp. -^ ; lat. \. 



Faem. Capitis cornu fere obsoletum. Thorax glaber, convexus, 

 linea elevata brevi transversa, duobusque tuberculis mediis parum 

 elevatis nigris instructus ; angulis punctisTe uullis. Elytra^ 

 iibiwque anticae ut in mari. 



Long. Corp. -^^ ; lat. j. 



Habitat in Brazilia. 



In Mus. nost. 



This insect belongs to Mr. Mac Leay's fifth form of the genus 

 PhancEiis, of which the well known North American species P. 

 carnifex is the type. But though it agrees with that division in the 

 essential points of the form of the thorax and the pectus, it evi- 

 dently deserts the typical character, and evinces an approximation 

 to the first form of the same genus, represented by P. bellicosus 

 and lancifer, in the emargination of the cli/peus, and the appear- 

 ance, although nearly obsolete, of the fourth tooth on the ante- 

 riour tibice. Other species in Mr. MacLeay's cabinet complete 

 this circle of affinities. This species, therefore, affords much in- 

 terest to the inquirer into affinities, by thus adding a further 

 illustration of the gradual process by which nature passes from 

 one form into another. 



I have named this insect in honour of the distinguished authour 

 of the " Monographia Apum Angliae," whose experience and 

 valuable instructions have been among my best guides in Entomo- 

 logy, and whose friendship and kind encouragement among my 

 chief supports in my advances through the science. 



Stirps. Pktalocera Thalerophaga. Mac L. 

 Fam. Melolonthid.?3. Mac L. 

 Genus. Euchloka. Mac L. 



Mac Leayana. Eu. pallide virescens, capite thoraceque punctis 

 aureis confertis splendentibus ; eljjtris punctatis Jlavo-margi- 

 nulis ; corpore subtus pedibtisqite aureo-cupreis. 

 Tab. 20. f, 7. 



