THE NAUTILUS. 119 



grandis, which is one of a few collected about 30 miles north of 

 Denver. This shell, which is 160 mm. long and 100 mm. 

 high, and the specimens from Black Wolf Creek were com- 

 pared, as Anodonta danielsi is a member of the Anodonta grandis 

 group. The oral end of this Anodonta grandis is rather abruptly 

 truncated, the same portion of the eastern Colorado shells being 

 broadly rounded ; the umbonal region is reddish brown shading 

 to almost black along the margin of the valve, the shell as a 

 whole lacking the greenish cast so evident in the specimens 

 from Black Wolf Creek ; and the Anodonta grandis shell is 

 more inflated and broader than the others. The umbonal 

 sculpture of this Anodonta grandis and of the Anodonta danielsi 

 from Black Wolf Creek seemed identical, and the contour of 

 the siphonal end of each valve is the same for both species. 



Department of Biology, 

 University of Colorado. 



NOTES. 



APPETITE OF EUGLANDINA. M. L. Vignal gives an interesting 

 account of the behavior of Glandina guttata C. & F. from Mexico 

 kept alive and under observation for some time (Bull. Soc. Nat. 

 d'Acclimatation, Nov. 1915, pp. 344-349). Ordinarily a large 

 Glandina ate an adult Helix aspersa every 2 or 3 days. Between 

 June 6 and Aug. 28 (1911) it devoured 28 Helix aspersa, weigh- 

 ing, without the shell 121 grams (about 65J ozs. ) Five Glan- 

 dinas ate 102 Helix variabilis and 7 H. nemoralis in 17 days, an 

 average of over 6 per day for the five. 



NOTE ON C^ECILIOIDES. In 1907 the Avriter proposed a group 

 Ccec'dianopsis to include the very small Cxcilioides of tropical 

 America, C. iota (C. B. Ad.), C. consobrina (Orb.) and their 

 varieties (See Manual of Conchology XX, p. 38). Not expect- 

 ing to find a land snail in a book dealing with marines, I over- 

 looked the publication by De Folin of Karolus primus, a minute 

 shell found at Vera Cruz (Les Fonds de la Mer I, p. 182, 189, 



