March, I9i6.] Leng: NoTES ON CyCHRINI. 39 



Fig. 12. Dorsal view of head, thorax and basal abdominal segments of 

 the fossil insect, Corydaloides scudderi. Wings shortened. Figure based upon 

 material from various sources. 



Fig. 13. Head and pronotum of the Coleopteron Einbaphion, dorsal view. 



Fig. 14. Dorsal view of the sixth and seventh abdominal segments of the 

 Phasmid Ectatosoma, shown from the side in Fig. 11. 



Fig. 15. Dorsal view of two abdominal segments of a nymph of the New 

 Zealand Ephemerid, Oniscigaster based on figures by MacLachlan, 1876. 



Fig. 16. Dorsal view of pro-, meso-, and metanotum of Lepisma. 

 Fig. 17. Dorsal view 6f five segments of a Diplipod. 



Fig. iS; Dorsal view of thorax and two abdominal segments of a nymphal 

 Plecopteron (Pteronarcys). 



Fig. 19. Dorsal view of head and five segments of an Isopod {Porcellio). 



Fig. 20. Dorsal view of anterior portion of a Trilobite (Triartlims), 

 based on figures by Beecher and others. 



For the identification of the immature Ephemerid depicted in Fig. 

 4, I am indebted to the kindness of Dr. Morgan, of Mt. Holyoke 

 College, and for the identification of the immature Plecopteron de- 

 picted in Fig. 18, I am indebted to the kindness of Dr. Smith of the 

 some institution. 



NOTES ON CYCHRINI. 



By Charles W. Leng, 

 West New Brighton, N. Y. 



In a letter from the late Frederick Blanchard on the subject of 

 Dr. Hans Roeschke's " Monographic des Carabiden-Tribus Cychrini " 

 this sentence occurs : " I was very much impressed with the thorough- 

 ness of the treatment and also with the feeling that it was almost 

 presumptuous to consider it critically or to comment." All must 

 concur in the sentiment thus expressed ; and it is only because the 

 subject matter of these notes has been long under consideration and 

 discussion with Mr. Schaeffer as well as Mr. Blanchard that they 

 are printed. 



The locality cited on page 267, "Washington, D. C. (Charleroi)," 

 should probably be Charleroi, Washington Co., Pa. A number of 

 specimens of several species have been distributed from that locality 

 and there is no connection known between " Charleroi," either as 



