1862.] M. o. A. L. morch's review of the vermetid^. 59 



triquetra, var. typica ; but I believe it has the same relation to B. 

 sutilis as B. triquetra to B. seinisurrecta. 



5. BivoNiA QUOYT, H. & A. Adams. 



T.solitaria, laxe contorta, termmscula, livido albo fuscoque varie- 

 ffafa, arena agglutinata prceserthn in anfr. primis ; anfr. ulti- 

 miis longus, porreetus, flexus, liris longitudinalibus obsoletis, 

 interstitiis lirulis parvis obsoletissimis ; strice increrhenti sub- 

 membranacece, expressed. 



ApertuTa circularis diam. circ. 4 m. 



Cladopoda quoyi, Adams, Genera, i. p. 359, t. 39. f. 3 a. 



Hob. Ad ins. Philippin. {Mus. Cuming'). 



The description is from the specimen represented by Messrs. 

 Adams. I do not know if the authors have placed this species in 

 the genus Cladopoda from a knowledge of the animal ; but the shell 

 seems to me so like that of Bivonia semisui'recta, that I have re- 

 ferred it to the present genus until the animal proves the contrary. 



Var. a. LILACINA. 



T. vix agglutinanSf crassiuscula, aperturam versus lilacina, liris 

 longitudinalibus granulosis ; in anfr. primis rugis obliquis cor- 

 rugata. 



Diam. aperturse fere 4f m. 



Hab. Ad ins. Philippin. (Mus. Cuming). 



One specimen a little larger and thicker than the preceding ; the 

 first whorls are lost. 



Var. /3. PLANORBOIDES. 



T. lilacino et albo variegata, arenulis sparsis agglutinatis, primum 

 irregulariter planorbiformis ; anfr. ultimus longiusculus, por- 

 reetus, refexus; anfr.graciles,teretes,subcequales, lirulis remotis 

 longitudinalibus, granulis scepe pulcherrimis, sat approwimatis ; 

 interstitiis lirula parva mediana granifera ; anfr. penultimus 

 striga longitiidinali ferruginea abrupta; varicibus tribus, ultimo 

 erecto valido. 



Diam. anfr. ult. circ. 3^ m. 



1 Tubulus vermicularis, Buonanni, Rec. p. 92. f. 20 A (sed duplo 

 major) ; Mus. Kirch, pi. 6. f. 20 A (copy). 



? Le cor de chasse, Favan. i. p. 669, t. 6. f, 3 (copy, but reversed 

 and enlarged). 



Hab. Ad ins. Philippin. (Mus. Cmning). 



I do not know any shell better resembling the figure of Buonanni. 



Var. y. laquearis. 



T. repens, sordide carnea; anfr.primi lividi, laqueatim torti; lirce 

 validiusculce, sat approximates, graniferm, hie illic squamulis 

 minutis ; rugce incrementi arcuatce, irregulares ; apertura af- 

 fixa, latere affixo piano obscuro. 



