Descriptions of new species of Hymenoptera. 67 



Slcivartii, as I have figured it, will also remain. Chem- 

 nitz, however, has described a shell which he calls Helix 

 Lugubris, and which is figured by Ferrussac in the splen- 

 did work just mentioned — this also is a variety of the 

 same species as our shell, and of course has the priority 

 in name. If therefore the nomenclature is to be changed, 

 it should stand as follows: — 



Achatina Lugubris 



Synonyms 

 Helix Lugubris, Chemnitz. 



Lorata, Ferrussac. 



Luteolata, Do. 



Vulpina, Do. 



Achatina Stewartii, Green. 

 It may not be uninteresting to some, to mention, that 

 Chemnitz informs us that so high a value was placed by 

 the shell dealers on the Achatina Lugubris, when first 

 brought to Europe, that he was obliged to give two gui- 

 neas for his specimen. 



Descriptions of netv species of Hymenoptera of the 

 United States. Br Thomas Sat. Read March 3, 



1828. 



AULACUS. Jurine. 



A. fasciatus. Wings violaceous with a hyaline band. 



Inhab. Ohio. 



Body black; thorax confidently punctured almost in 

 transverse grooves; wings violaceous with a hyaline band 

 on the middle, hardly reaching the anal margin; abdomen 

 much compressed; oviduct longer than the abdomen, 

 aiuch incurved at tip. 



Length half an inch. 



