396 MOLLUSKS OK TllH (iALAl'A(;()S — STKAKNS. 



Family CElUTllllDJO. 



({.•nils CERITHIUM l<nif,Mii.'iv. 



76. Ceiithium maculosuiu Kifiicr. 



+ C. (KJnatiim KitMu>r. 

 — C. mhiilosiiin Sliy. 



CoiMiiKMi t»n the boaclios. 



DiiMcan, .lauios, and liHlolatijiablo islands. Nnnicrons spocinions, 

 8onio (inito fivsli and iHnlW't were obtained; thest^ inebide both; the 

 smoother form is the (I adxstnin Sby. var., non Kiener, the latter 

 ant hoi's tij>nre and dia^iiosis not ajireeiny;, else the wronj*; nnmber is 

 attached to the ligiire. At Chatham Island, Dr. Joues collected sev- 

 eral examples. 



Family MODHLID.E. 



(aiuis MODULUS (hay. 



77. Modulus cerodcs, A. Ad. 

 Beach shells. 



Hood Island, two beach-worn s])ecimens (Mns. No. 102354). Not 

 heretofore reported from the (Jalapajios. 



Family VFUMFTID.E. 



(i.Miu.s VERMETUS Monh. 



Subgenus SERPULORBIS Sassi. 



78. Serpulorbis sqiiamigerus Cpr. 



Beach shells, numerons. 



Hood, .lames, and lndcfatii;:ible islands (Mns. No. 102341, 1023r)0, 

 IITIUJO, 117!>07). From Hood Island, one example api)arently varie- 

 tal (No. 102350), rather tlattencd with pinched sides, resembling V. 

 (Alctcs) vtnti<iti(i<lnis Val. 



SubgiMius ALETES rarponter. 

 79. Aletes, sju'cifa. 



Beach, fragment. 



Hood Island, too small and imperfect to warrant an attempt at de- 

 termination. 



Family MTTOIHNID.K. 



(u'uus TECTARIUS N'altMuiounoa. 

 80. Littorina (Tectarius) galapagieusis JStoaius. 

 riat»> I.I, I'murc" 7. 

 Pnliiuinary tloscriptinu iu '•'I'hc Nautilus," UecomluM-. 1892. 



.lames Island; one example fresh an«l in good condition (Mns. No. 

 102509). 

 Shell small, rather solid, ovatt' conic, angnlatcil in onlline; tive to 



