Mr. W. H. Benson on new Cingalese Land-Shells. 381 



point is more conclusive ; for he states that Adolphia differs from 

 Ceanothus and Colubrina in the form of its calyx and petals, its 

 simple style, opposite leaves, and spinose branchlets, which are 

 all floriferous below. 



ADOLPHIA, Meisn. Calyx campanulatus, brevis, ultra medium 

 5-fidus, laciniis acutis, intus carinatis et callosis, sestivatione 

 valvatis. Petala 5, ovata, cucullata, imo unguiculata, stamina 

 amplectentia. Stamina 5, inter lacinias calycinas cum petalis 

 infra marginem disci inserta ; filamenta complanata, erecta, 

 apice inflexa ; anthera rotundatse, cordatse, 2-lobse, connective 

 reniformi dorsali affixa?, rima hippocrepica 2-valvatim dehis- 

 centes, et hinc demum peltatim apertse. Discus crateriformis, 

 carnosulus, magnitudine tubi calycis, et ei arete adnatus. 

 Ovarium in fundum disci insitum, et paululo iminersum, 

 depresso-globosum, 3-loculare; ovula in quoque loculo soli- 

 taria, erecta. Stylus brevis ; stigma obtusum, 3-lobum. Fruc- 

 tus capsularis, 3 -coccus, ut in Colletia. 



Prutex Mexicanus, ramosissimus, spinosus, ramulis oppositis, te- 

 retibus, stepius spina terminatis; spinis patentibus, decussatim 

 oppositis, rigidis; folia opposita, longe linearia, integerrima ; 

 flores solitarii, axillares 3 quasi fasciculati. 



1. Adolphia infesta, Meisn.; Benth. PL Hartw. 286; A. 

 Gray, PL Wright. 34. Colletia infesta, Brongn. Ann. Sc. Nat. 

 x. 366. Ceanothus infestus, H. B. K. ii. 31. Colubrina 

 infesta, Schl. Linn. xv. 468 ; Frutex 3-4-pedalis, ramosissi- 

 mus, spinosissimus ; ramis ramulisque patentibus apice spi- 

 nescentibus, junioribus retrorsum hirtellis, spinis decussatis ; 

 foliis parvis, oppositis, anguste lanceolatis, apice mucronatis, 

 integris, crassiusculis, pilosulis, demum glabrescentibus, sub- 

 tus pallidioribus, brevissime petiolatis ; stipulis parvis, oppo- 

 sitis, gibbosis, squamiformibus, fusco-rubellis, 2-fidis, laciniis 

 lineari-acutis, erectis, ciliatis, sinu petioliferis ; floribus 2-6, 

 in gemmam squamosam congestis. 



Hab. Mexico. v. s. in herb. Hook., Zacatecas (Coulter, 10) ; 

 El Paso, Nov. Mex. (Wright, 91). 



[To be continued.] 



XLI. Characters of new Cingalese Land-Shells collected by P. 

 Layard, Esq., Ceylon Civil Service. By W. H. BENSON, Esq. 



Helix Rosamondaj B. n. s. 



Testa perforata, turbinata, tenui, arcuatim rugose striata, superne 

 lineis confertis granulatis, infra striis obsoletis spiralibus decussata, 

 luteo-olivacea, spiram versus fuscescente j spira conica, lateribus 



