l879 '] MOLLUSCA OF COSTA RICA. 483 



26. Orthalicus zebra, Miill. 



0. zebra, Miill Verm. terr. et fluv. Hist. 138; Reeve, Conch 

 Icon. Bidimus, pi. 15. fig. 90. v-oucn. 



Bulimus princeps, Brod. 



Bulimus undulatus, Brug. 



Bulimus zigzag, Lam. 



All poor and dead specimens. 

 TaW^^jf* ab0UtLi P uri0 ^ 200feet *^ethe sea in 



27. Cyclotus boucardi, Angas. 



Cyclotus boucardi, Angas, P. Z. S. 1878, pi. 5. fio-g 3 4 



2 inc n hes a aci n oss! SPedmeU f ° Und ' ^ thaU the ^ ™ asurin S 

 "Mouth of Banana River, 5 miles from Limon" (Gabb). 



28. Cyclotus irregularis, Pfr. 



Cyclotus irregidaris, Pfr. P. Z.S. 1855, p. 117. 

 A large number of specimens. " The commonest shell in Tala- 

 manca; coast region, and to 500 feet high on the hills" (Gabb) 

 Animal pinkish ; tentacles bright red " (Gabb ) 

 There are two well-marked varieties of this species :— one large 



• ( ] \ T aC T s) ' bnght chestn "t, with a pale band at the 

 periphery; the other smaller (1 in. 5 lines across), pale yellowish 

 olive, with a narrow brown band at the periphery. 



It is curious in how many specimens the lower margin of the 



£w 5? 3PPearS t0 h / Ve been in J Ured and re P air commenced, 

 SS?f 8PPear ^ Ce °[ a n S \ C r d siuUS - 0f this ^markable injury 

 at different ages of the shell, Mr. Bland remarks :-« Examination It 

 the outer edge of the peristome induces me to believe that the animal 



tZyTllnTf^ZtT ** ******* so to ■* to 



29. Cyclotus dysoni, Pfr. 



Cyclotus dysoni, Pfr. P. Z .S. 1851, p. 243. 



* Only on hills, not common " (Gabb) ; Cervantes, Costa Rica. 



30. Cyclotus translucidus, Sow. 



Cyclotus translucidus, Sow. ; Pfr., Monog. Pneumon. vi. vol. i. 



Eight specimens found, all of a somewhat dwarf form as com- 

 pared with the type. " Lepanta " (Gabb). 



31. Cyclophorus lutescens, Pfr., var. 



<^ao. ed. 2, p. 333, pi. 43. figs. 12-14. 



Very fevr specimens. "Lepanta, Nicoyo" (Gabb). 

 Curiously hke Cyclophorus ivahlbergi, Benson, from Zululatld. 



31* 



