PLACOSTYLUS. \[\\ 



in the shortening of the duct of the spermatheca, and the enlarge- 

 ment and evident functional importance of the first branch of the 

 pericardial vein. The latter is well developed, however, in the 

 American genus Macrodontes. 



Section Placostylus s. str. 

 (Species of New Zealand.) 



P. shongii Less., xiii, 22. v. novoseelandicusPfr.,xiii, 24. 



bovinus auct. neozealanicus Hutton. 



auris-bovina Petit. v. candidus Crosse, xiii, 25. 



hongii Suter, xiii, 235. 



(Species of Lord Howe Island.) 



P. bivaricosus Gask., xiii, 25. v. etheridgei Braz., xiii, 26. 



v. cuniculinsulas Cox, xiii, 26. v. solidus Eth., xiii, 27. 



(Species of New Caledonia and the Loyalty Is.) 



Group of P. bavayi. 



P. eddystonensis Pfr., xiii, 30. P. curtus Cr., xiii, 33. 

 hienguenensis Crosse. layardi Kob. 



servaini Euthyme. P. savesi Cr.', xiii, 33. 



P. bavayi C. & M., xiii, 31. ,P. rossiteri Braz., xiii, 34. 



v. dupuyi Kob., xiii, 31. 

 P. bondeensis C. & S., xiii, 32. 

 v. edentulus C. & S., xiii, 32. 



Group of P. fibratus. 



P. alexander Cr., xiii, 35. P. fibratus Martyn, xiii, 39, 235. 



v. procerula, ouagapensis, B. alboroseus, bulbulus, car- 



crassus, leucostoma, nigri- bonarius, necouensis, in- 



cans Crosse, xiii, 36; fundibu/um,superfasciatus, 



patulus Kob., xiii, 236. patens, of Gassies ; B. f. 



P. corpulentus Gass., xiii, 37. pallidula Crosse ; Voluta 



P. abbreviatus Gass., xiii, 37. austraiis Dillw.; H. auris- 



P. kanalensis Cr., xiii, 38. bovinus Fer.; Auricula 



v. tchioensis Kob., xiii, 38. aurantiaca Sclium.; B. 



thioensis Cr. bootis Mke. 



v. subeffusus Kob., xiii, 39. v. pinicola Gass., xiii, 42. 



