Contribulio)is from the Sa?i Die^o Biological Laboratory ^y 



membrane seems to bear the same relation to the zona, as the 

 network of filaments does in this case. Before the eggs are de- 

 posited, this net work is stripped off the egg and forms a strand. 

 The strands of different eggs serve to bind them together. The 

 eggs thus come to be laid in clusters resembling bunches of 

 grapes. The yolk is bright lemon yellow, the germ granular 

 and opaque white There are many oil globules imbedded in the 

 yolk. On comparing these eggs with those of the crustacean, 

 with which they associate and whose eggs are deposited at the 

 same date, they are found to resemble them to a marked degree, 

 and the thouglit naturally suggests itself that the first eggs mimic 

 those of the crustaceans. In many cases, when for some reason 

 or other, the eggs were injured they expanded greatly in the di- 

 rection of their long axes, so that they became canoe-shaped, 

 measuring in one case .8x1. 8mm. 



Carl H. & Rosa S. Eigenmann. 



LIST OF BEETLES OF THE GENUS AMARA 

 TAKEN RECENTLY IN COLORADO. 



(Compiled from the Record Book of the Colorado Biological Association.) 



For the identification of the species here enumerated the asso- 

 ciation is indebted to Dr. John Hamilton, Prof. C. V. Riley and 

 the U. S. National Museum. 



Amara polita, Lee, Custer Co., Wet Mountain Valley. 



Amara confusa, Lee , W. Custer Co., W. Fremont Co. 



Amara n. sp., Fremont Co., W. Custer Co. 



Amara musculus. Say, W. Custer Co. 



Amara terrestris, Lee, W. Custer Co., Fremont Co., Canyon 

 City, N. E. Mesa Co. 



Amara cylindrica, Lee. ?, W. Custer Co. 



Amara interstitialis, Dej., Summit Co., Slate Creek, W. Cus- 

 ter Co., Pueblo Co. 



Amara fallax, Lee, S. Pueblo Co. 



Amara erratica, '' Sturm " var., W. Custer Co. 



Amara laticoUis, Lee. , W. Custer Co. 



Amara remotistriata, Dej., E. Montrose Co. 



Amara gibba, Lee. ?, W. Fremont Co. 



Amara obesa, Say, W. Custer Co. 



Amara aenea, W, Custer Co. near Ula. 



Amara latior, W. Custer Co. T. D. A. Cockerell. 



West Cliff, Colo., May 16, 1889. 



