87 



" I cannot quit this group without acknowledging that I am not 

 without doubts as to the specific difference of Bui. chrysalidiformis 

 and Bui. Mindoroensis . If the shells at the greater intervals be 

 taken, they appear to be distinct, but there are gradations in these 

 numerous and motley Mindoro snails, that at least closely approx- 

 imate the two sections into which I have divided them." — W. J. B. 



Mr. Cuming exhibited the various species and varieties of shells 

 described in the foregoing paper, and also a series to illustrate the 

 memoir of G. B. Sowerby, Esq., which was next read : it is entitled 

 •' Descriptions of new species of the family of Helicida, collected by 

 Mr. H. Cuming in the Philippine Islands." 



Helix (Cochlogena De F.) tolychroa. Hel. testa obotatd, te- 

 nui, nitidd, anfractibus quinque, pritnis prxsertim, ventricosis, 

 oblique lineis incrementi, striatis, ultimo majori, cateris duplb 

 longiori, fascia, diver sicolore, plerilmque albd, prope suturam : 

 nperturd suborbiculari, peristomate plerumqtce albo, extus rejlexo ; 

 columella albd, rectiusculd, antici subcallosd, subsinuatd. Long. 

 1-9. lat. 1-3 poll. ^ 



H. virido-striata, Lea secund. Jay. 



Hab. in foliis arborum ad insulam Temple dictam Philippinarum. 



One of the most beautiful, as well as one of the most variable spe- 

 cies in colour. In its general form it is very near var. b. of Lamarck's 

 Helix galactites {H. mirabilis, De F. Hist. Nat. Gen. et Part, des 

 Mollusques terr. et fiuv. t. 31 . f. 4 to 6), which has been called H. Phi- 

 lippinarum, but from which it may easily be distinguished by atten- 

 tion to the Jibove characters. The following seven varieties in colour 

 have been brought by Mr. Cuming : viz. var. a. bright green, with 

 darker, longitudinal, oblique, slightly undulated lines and bands, 

 and a white band at the suture : var. b. the same, with the addition 

 of a narrow, very darkly coloured brown band immediately below 

 the white sutural band, and a broad spired dark brown basal band : 

 var. c. the same, with two additional dark brown bands on the last 

 volution : var. d. bright light brown, with green, slightly undulated 

 oblique longitudinal bands, and a white sutural band : var. e. the 

 same as var. a., but having the sutural band of a light and dark brown 

 colour varied : var./. of chestnut brown, with a white sutund band : 

 var. y. of a dark chestnut brown, with a light orange brown sutural 

 band. 



This species is Helix virido-striata of Lea, according to Dr. Jay ; 

 I know not if that name be published or not. I hope not, because 

 it cannot be adopted, neither being consonant with the rules of no- 

 menclature, nor with classic purity. 



Helix (Cochlogena DeF.) flohida. Hel. testd obovatd, tenui- 

 usculd, haud nitente, anfractibus quinque ventricosis , tenuissimi 

 oblique striatis, ultimo majori, ceteris fere duplb longiori ; suturd 

 minutissimi crenulatd, albd; aperturd suborbiculari peristomate 

 latiusculo, rejlexo, rotundato, albo ; columella albd, subincurvd. 

 Long. 1'6, hit. 11 poll. 



