312 



wading depth, generally with a little open space in the deepest 

 part, but mostly choked with luxuriant vegetation (Graminea?, 

 Utricularia, etc.). Date of collection first week in July." 



The occurrence of the Apusdike form, which may be called Lep- 

 idurus Couesii, is of much interest, as the genus has not before 

 occurred on this continent south of the Arctic regions and Green- 

 land, where L. git <tial is occurs. Our western species, however, 

 more closely resembles L. productus from Europe, but differs in 

 the much longer telson, which is long, slender and spatulate. In 

 this character, and its much longer carapace it differs from L. 

 glacial in from Greenland. It also differs from L. product us in the 

 eyes being closer together and more prominent. 



In the males the carapace is a little shorter, and the telson twice 

 as large as in the other sex, being three or four times as long 

 as that of L. productus. Thirty-two males and thirty-one females 

 occurred. This equality in the number of the sexes is noteworthy. 



With these occurred a new Lymnetis with eggs. It is interme- 

 diate in size between L. Gouldii and L. gracilicornis, but more 

 spheiieal than either, li may be recognized at once by the much 



be called Ltwwtix mncronnhis. Length .10 .1.". inch. — A. S. 

 Packard, Jr. 



Artificial Hatching op Grasshoppers. — I recently noticed 



thai 1 thought them worthy of public mention. I was travelling 

 with U. S. Troops in the southwestern part of Dacota Territory, 

 through a region which had been visited by the flight of grass- 

 hoppers of 1874. It was January and the weather intensely cold. 

 We generally came into camp each day at 4 p. m., when the snow 



thaw. -d out the mound and heated it for some distance around. 



yet (-tu n the next morning young gra^hoppcr< were seen skipping 



an ungual forcing pro;v~. \\\ L. Carpenter, U. S. Army, 

 Camp Robinson, Neb., Jan. 17, 1875. 



[It seems probable to us that the larva; of the Caloptenus 

 hatched in the autumn before the snow fell, as those of other and 

 allied grasshoppers do in JN'ew England. — Ens.] 



