20 



Hab. The mouths of rivers running into the bay of Manila. 



This species, which is hy far the largest of the genus, presents a 

 very peculiar arrangement of the epidermis. Over about one-third 

 of the length of the shell from the posterior extremitj-, the epidermis 

 lies in narrow ridges parallel with the lines of growth ; these ridges are 

 then suddenly directed towards the umbones, and become dispersed 

 over the remaining portion of the shell in the form of shrivelled 

 wrinkles scattered in the contrary direction. 



2. Glauconome steaminea. Glauc. testd suhelongato-ovatd, cir- 

 citer umbones erosd, latere antico rotundato, postico subattenuato, 

 leviter angulato, rotundato ; epidermide nitidd, viridescente-stra- 

 mineu, angulum svper corrugatd. 



Conch. Icon. pi. 1. f. 2. 



Hab. Mouths of rivers running into the baj' of Manila. 

 A light delicate straw-coloured shell, slightly angulated on the 

 posterior side, with the epidermis lying on the angle in wrinkles. 



3. Glauconome eadiata. Glauc. testd obhngo-ovatd, compres- 

 siusculd, corned ; purpureo-radiatd ; epidermide viridescente prope 

 marginėm indutd, lateribus rotundatis, postico subacuminato. 



Conch. Icon. pi. 1. f. 3. 



Hab. Mouth of a small river at San Nicolas, island of Zebu, Phi- 

 lippines. 



This is a very pretty species, vividly rayed inside and outside with 

 violet-purple. 



4. Glauconome corrugata. Glauc. testd elongato-ovatd, subti- 

 lissime striatd, circiter umbones erosd, lateribus rotundatis, postico 

 acuminato-angulato ; epidermide angulum super corrugatd, intus 

 vivide purpureo-radiatd. 



Conch. Icon. pi. 1. f. 6. 



Hab. Mouths of rivers running into the bay of Manila. 



The posterior side of this species is more elongately angled than 

 that of any other ; the epidermis is \vrinkled over the posterior half 

 of the shell, and the interior is vividly rayed \vith purple. 



5. Glauconome angulata.- Glauc. testd elongato-oblongd, striatd, 

 circiter umbones plūs minusve erosd, latere antico rotundato, pos- 

 tico angulato, carind obtusd ab umbonibus ad marginėm decurrente. 



Conch. Icon. pi. 1. f. 5. 



Hab. Mouth of a small river at Jinigaran, island of Negros, Philip- 

 pines. Rather a dingy, short, angulated species. 



6. Glauconome curta. Glauc. testd ovatd, curtd, tenui, subti- 

 lissime striatd, ad umbones paululum erosd, lateribus rotundatis, 

 intiis ceEruleo-carneo tinctd. 



Conch. Icon. pi. 1. f. 7. 



Hab. Mouth of a river in Agoo, province of Pangasinan, island of 

 Luzon, Philippines. 



A very delicate specie.'^, with a fine smooth silken epidermis, short, 



