February iSgi.] 



PSYCHE. 



27 



other Orchelimum. The elytra are so 

 strongly reticulate that they look rough. In 

 the female they are peculiar in having the 

 anal field form a distinct angle (as in Scud- 

 deria) with the rest of the elytra. In the 

 male they are peculiar in that the posterior 

 vein of the stridulating apparatus is trans- 

 verse instead of oblique as in the other spe- 

 cies and only half the length of the adjacent 

 vein on the right instead of twice as long as 

 it is usually. The posterior femora are 

 slender and armed below on the posterior 

 half with several small spines. The ovipos- 

 itor of the female is long, slightly curved on 

 its upper side and slenderly acute. 



This very marked and handsome spe- 

 cies I found on the banks of Rock River 

 near Cleveland in Henry County. The 

 specimens upon which this description 

 is based were found in a clump of rank 

 growing Sagittaria variabilis which 

 grew in the angle of an old wall that 

 had once formed a part of the founda- 

 tion of a mill. A peculiarity in the 

 stridulation attracted my attention and 

 led to the discovery of this as well as 

 the preceding species. I was passing 

 this forementioned clump of weeds in a 

 canoe when the peculiar stridulation fell 

 upon my ear and I at once proceded to 

 investigate the cause. These specimens, 

 unlike any Orchelimum with which I 



am acquainted, flew about from one 

 broad leaf to another. The song has a 

 new note in it. It may be represented 

 as follows : zip-zip kr-ze-e-e kr-ze-e-e, 

 the last part of the song not lasting 

 more than a half to three quarters of a 

 second and is always preceded by the 

 sound which I represent imperfectly by 

 kr. I have found this species in no 

 other place and it must be very rare as 

 its unusual note would have betrayed it 

 to me if I had ever been near it. Two 

 males and two females taken August 

 19th. 



41. Udeopsy lla nigra Scudd. I have 

 found this species not uncommon in 

 woods from the first to the middle of 

 June. 



42. Ceuthophilus vmculatus Say. A 

 rare species at Moline, a few specimens 

 taken in June. 



43. Ceuthophilus latens Scudd. Not 

 uncommon in the latter part of June. 



44. Ceuthophilus niger (?) Scudd. 

 I have a single immature specimen 

 which I refer to this species. 



45. * Ceuthophilus gracilipes Scudd. 

 Mr. S. H. Scudder gives Southern Illi- 

 nois as a locality for this species. I 

 have not identified it. 



Marine Insects. Those interested in 

 this somewhat restricted field will find in last 

 year's Revue biologique of Lille an interest- 

 ing contribution to the subject by Prof. R. 

 Moniez, entitled Acariens et insectes marins 

 des c6tes du Boulonnais. Six species of 

 Thysanura of four genera, one of Coleoptera 

 (Micralymma) and one of Diptera (Chiron- 

 omus) are recorded. 



The trustees of Dartmouth college 

 have recently established in the agricultural 

 department a chair of entomology and zo- 

 ology, and filled it by the election of Dr. 

 Clarence M. Weed, now in charge of the 

 entomological department of the Ohio Ex- 

 periment Station at Columbus. Professor 

 Weed is also editor of the entomological de- 

 partment of the American naturalist. 



