104 RISSOID^. 



21. Eissoa algeriana. 



Rissoa Algeriana, Monterosato, J. de C, 1877, Algiers, pL III, Jiff. 5, " coll. 

 Joly." 



20 Algiers [typical] ; coll. P. Joly, Esq. 



var. rufula. 

 E. Algeriana, var. rufula, Monterosato, I. c. 

 9 Algiers; coll. Mons. Joly. 



22. Bissoa pusilla. 



Rissoa pusilla, FMlippi, Unum. Moll. Sicil. 1S36 ; fide Schvarlz, JR., dolium, 

 Njst, 1843. 



10 Algiers; coll. P. Joly, Esq. 



23. Rissoa desmaresti. 



Eissoa desmaresti, Andouin, Descr. de I'Egip'e, pi. HI, fig. 21, 1826. 



The outline figure of type, natural size, measures about 3 

 mil. 



var. minima. 

 1 Annesley Bay ; coll. W. T. Blauford, Esq. 

 Long. 1 mil. 



24. Rissoa auriscalpium. 



Tuvbo auriscalpiuui, Linncetis, Syst. Nat. Ed. XII, 1757 ; sect. Zippora. 



30 Algiers, &c., Mediterranean ; coll. Herr Schwartz von Mobrenstern, 

 and P. Joly, F. Stoliczka, and G. Nevill, Esqrs. 



25. Rissoa (?) rudis. 



Rissoa rudis, Phillippi, Enitm. Moll. Sicil. I, 1836. 

 50 Algiers ; coll. P. Joly, Esq. 



Not included in Bissoa [restricted] by Schwartz, but con- 

 sidered an Alvania ? 



