ENTOMOLOGY OF EPPING. 155 



In the Rypophaga we want — 



The extreme rarity of Boleii, or, as they are commonly 

 called, saps, on the trees about us, account for the absence of 

 some genera; others cannot be expected to occur here ; and if 

 any of the minute genera, whether honoured with a name of 

 six syllables in length, or doomed to rest content with only 

 two, really occur here, they have as yet escaped me. 



Of some genera, as Leiodes, Octhebius, Micropeplus, and 

 Necrodes, we rarely find a specimen ; other genera and 

 species, on the contrary, abound. Necrophorus humator and 

 mortuorum, Oiceoptoma thoracica, many species of Catops 

 and Nifidula, are in unusual abundance. Perhaps it may be 

 worth my mentioning, that N. vespillo is here very scarce, 

 whilst N. mortuorum is so common that I have taken dozens 

 out of one decaying rook. 



In the Helocera, Trinodes, Limnichus, Synccdypla, Noso- 

 dendron, Oomorphus, Simplocaria, Onthophilas, and Platy- 

 soma, are those genera which do not occur here. Our soil 

 and situation will account for the absence of most of these, 

 as well as for the scarcity of the Byrrhi, of which we only 

 take B. pilula and sericea : the former of these is not 

 very common here. 



In the Lamellicornes we are a little deficient. Of the 

 Lucaniies, Dorcus parallelipipedus, and Lucanus cervus, 

 are the only species taken here, both very rarely ; the latter is, 

 I am told, more common at Loughton. Of the other Lamelli- 

 cornes, we have Typliaus, Geotrupes, Aphodius (numerous), 

 Trox (sahidosus only, and that very rare), Serica (rare), 

 Melolontha, Hoplia (rare), Cetonia aurata (rare). The other 

 genera do not occur, neither do any of the Biiprestites in the 

 next division. 



All the species of Elater, — as the genus now stands in 

 Mr. Stephens's Nomenclature, — are strangers to us, (except 

 E. hipustulatus). Also, 



