collected in Nczff Holland by Mr. Tiohcrt Bronm. 467 



tus : niargine explanato rotiindato. 5'c»/e//H77j apice rotiinda- 

 tum, punctotiini. Elylra porcata : porcis crenatis, alternis ca- 

 tenatis, vel ex punctis oblongis elevatis, ut in Carahis pluribiis 

 obtinet, constantibus. 



Obs. Poici omncs in apicc elytri interrupti sunt. 



I (lid not discover that AdeUinn caraboidts had been described 

 by Fabricius till after the figures illustrative of this paper were 

 drawn ; and as the insect here given confirms the genus I had 

 laid down in my former paper, and is another instance of its spe- 

 cies imitating the form and appearance of the Carabidce, I think 

 it may be interesting to Entomologists, particularly on account 

 of Mr. Curtis's excellent figure, if I retain it. I have altered 

 Fabricius's trivial name, as the insect certainly is neither a Cara- 

 bus nor a Calosoma, to make it harmonize with those of the spe- 

 cies before described. 



Hel;eus Latreille. 

 * Thorace antice bipartito, ante caput protenso. 



Brownii. 18. H. ater, glaberrimus, thorace caput ambiente, co- 

 Icoptris disco elevato granulate : sutura cari- 

 nata. 



Plate XXIII. Fig. 8. 

 Long. corp. lin. 9. 

 AflSnis H. perforato Latr. sed dimidio minor. Palpi maxillares 

 articulo extimo minori, subpetiolato. Coleoptra glaberrima, 

 haud punctata, granulis quibusdam subseriatim notata. Su- 

 tura in carinam elevata. Sternum vix carinatum. Alias simil- 

 limus. 



This family of the genus Helaus presents some of the most sin- 

 gular insects in nature. The lobes of the thorax meet over the 

 VOL. XII. 3 p head, 



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