230 CALIFORNIA ACADEMY OF SCIENCES. 



Mexico, it belongs rather to the highlands and more tem- 

 perate parts of the country. 



LiODERMA LiGATA Say. This species extends from 

 Washington and Utah, all the way down the Pacific terri- 

 tory to Cape St. Lucas. It is common in Arizona and 

 southern California, from many parts of which I have 

 examined specimens, as also from Mexico, as far south 

 as into Sonora. 



LiODERMA viRiDicATA Uhler. I have examined speci- 

 mens from the collection of Mr. Henry Edwards, which 

 were collected in Lower California. 



LiODERMA Sayi Stal. A few specimens were collected 

 near Cape St. Lucas by Mr. John Xanthus. Specimens 

 were found by Mr. C. D. Haines at Comondu, Cala- 

 majuet, and on Margarita Island. 



Peribalus liimbolarius Stal. One specimen was 

 captured in the vicinity of Cape St. Lucas by Mr. John 

 Xanthus. It has been brought from other parts of the 

 peninsula by several collectors. 



HoLcosTETHUS ABREViATUS Uhler. A single speci- 

 men from the peninsula was obtained from Mr. Henry 

 Edwards. 



Thyanta perditor Fab. This species lives on low 

 weeds in barren grounds, and so we may expect to find 

 it in most parts of Lower California. It is already known 

 from Cape St. Lucas and from the northern part of 

 the peninsula. It is common in Mexico, Arizona, Colo- 

 rado, the Gulf States, Central America and the Antilles. 

 In Hayti it lives on bushes and low weeds along the roads. 



Thyanta custator Fab. This is the commonest and 

 most variable species of the genus. It varies in size, as 

 well as in color. B}^ its adaptability to varieties of climate, 



