MUSEUM OF COMPARATIVE ZOOLOGY. 137 



Glandina truncata, GMKLIX. d>. 84.) 

 Found also in North Carolina. 



Glandina Texasiana, PFEIFFER. (p. 87.) 

 Found also in Louisiana. 



Macrocylis Voyana, NEWCOMB. (p. '.".) 

 A smaller variety of 9 mm. greater diameter is found at Los Angeles. 



Macrocylis Hemphilli, w. G. BINN. 



Plate II. Fig. M. 



At Olympia, Oregon, Mr. H. Hemphill collected several specimens of a 

 Macrocyclis, which appears to be distinct from, though nearly allied to, M. Van- 

 couverensis. It may be best described by saying that 



The umbilicus is narrower and not excavated so much, the termination of 

 the last whorl not receding from the umbilicus as in all the forms of I'uiicou- 

 verensis and co^cava; in all, the whorls are more or less strongly striated with- 

 in the umbilicus, often almost ribbed in concava ; not so in this shell ; the 

 texture of the shell is glassy like Ilyalina, and there is no trace of the micro- 

 scopic spiral lines found in all the other forms ; beneath, the last whorl is pro- 

 portionately wider. The greater diameter is 14 mm. ; loser, in ; height, o. 



The jaw and lingual dentition aie as usual in the genus. I could not dis- 

 tinguish the characters of the central tooth in this species. 



Zonites capnodes, W. G. BINN. (p. 98). 



Plate III. Fig. C. 



Living specimens received from near Knoxville, Tenn., through the kindness 

 of Mrs. George Andrews, have enabled me to figure the genitalia. The genital 

 bladder (g. b.) is large, globular, on a short, narrow duet : the penis-sac. (/). x.) 

 lias the same peculiar accessory process which T hav.' di'trcted in Ihosc of 

 Z. lii'i-i/jatus, Rugcli, fuliyinosus, fritiliilis, and inornatus. There is a vaginal 

 prepuce. 



It is in many individuals more easy to distinguish ccqmodcs from fiiliyinosus 

 by the dentition than by the shell. 



Zonites fuliginosus, GRIFF, (p. 100.) 



In a specimen from Indiana, sent me by Mr. F. Stein, I lind the same acces- 

 sory process to the penis-sac noticed above. It is not given in Leidy's figure 

 in Vol. I. 



