—So- 

 lower portion only has the papillce and hairy surface. The sacs and 

 tentacles here are whitish, instead of orange, as in acrcea. The 

 processes of the latter species have a most remarkable resemblance 

 to the tentacles of the larva o'i Papilio asferias, both in color and in shape. 

 In both species an intense odor, somewhat like the smell of laudanum, 

 is apparent when first the tentacles are exposed; and there is no reason- 

 able doubt but that they are odor-glands, though exactly what purpose 

 thev serve is not so clear. In closely allied s-pecies no trace of this struct- 

 ure has been detected. Several fresh specimens of several species of 

 Arctia, Spilosoma virginica, and Hyphafiiria iexior showed no trace of it: 

 and no dry specimens of any either species thus far examined have a 

 similar structure. 



Some years ago Mr. Morrison observed and described the structure 

 in acraa and mentions having found similar structures in Agrolis pleda 

 and Euplexia lucipara. This I have not been able to verify. Prof Riley 

 has described similar structures in Aleiia xylina, and probably a consider- 

 able number of other species will be found to have them. 



Notes on Geotrypes Opacus, Hald. 



By Alfred W. Jones, Salina, Kans. 



I do not know as to the relative rarity of this species, but from the 

 fact of always finding a ready exchange for it, I su] pose it is not very 

 common. 



I have almost always taken it, where I have found no other scavengers 

 at work, except Aphodius, and a few Staphylinus perhaps, and I have al- 

 ways taken it either very early in spring or late in the fall. 



Generally I have taken it on low bottom land, or on sand bars in 

 the river, where cattle are wont to drink: here I have taken most 

 of the specimens, and I have taken them at the very water's edge v/here 

 they had burrowed down into sand that was saturated with water. But 

 I never found more than three or four in one place until last November, 

 when in company with Mr. Warren Knaus, I drove to Manhattan and back 

 from Salina. On our trip going down I saw a specimen crawling along 

 in the road, and stopping to get it, I observed some fresh manure which 

 yielded several specimens. Thinking we had procured all of them, we 

 drove on, but returning about a week later we stopped to examine the 

 very same place, and though at first it appeared as if it were a useless 

 search, Mr. Knaus said that he saw several burrows going down into the 

 sand and meant to find out what was there. He dug down nearly a foot 

 with no success before he threw out one, and then in a few minutes we 

 had eleven specimens in the Cyanide bottle. 



