Zoological Society. 371 



Genus Zamia. 



Zamia furfur acea. — There are two fine old plants in the Botanic 

 Gardens at Cambridge and Chelsea, which are males, and bear cones 

 almost every year. Their stems are short and branched. In the 

 Botanic Garden at Liverpool is a female, which produced a cone in 

 1848. These three plants agree quite as well with Miquel's de- 

 scription of *' Zamia muricata, var. angustifolia," as with his descrip- 

 tion of Zamia furfur acea. 



Zamia integrifolia. — A fine female plant in the Botanic Garden at 

 Cambridge produces a cone every year, and one is now appearing. 

 Five or six bulbs grow from the stem, some of them bearing leaves*. 



Genus Ceratozamia. 



Ceratozamia mexicana. — A male plant flowered at Chats worth in 

 1847, and another of the same sex at Kew. The cone of the last is 

 preserved in the museum. Two fine plants of this species are now 

 flowering at Kew, and there are two in the garden at Chiswick, 

 also in a flowering state. At Kew and Chiswick these plants 

 are called " Dipsacozamia." In these gardens the plants differ 

 so much in the size and form of their leaves, that they may be pre- 

 sumed to belong to some of the four new species preserved at Am- 

 sterdam, which Miquel describes in the ' Tijdschrift voor de Wetten- 

 schappen,' 1847, p. 38-43. The same observation applies to the 

 Ceratozamias in the conservatory of Mr. Loddiges at Hackney. 



ZOOLOGICAL. SOCIETY. 



Nov. 14, 1848. — Wm. Yarrell, Esq., Vice-President, in the Chair. 

 Description of a new Genus of Acephalous Mollusca, op 



THE FAMILY PeCTINACEA, COLLECTED BY CaPT. SiR EdWARD 



Belcher during the voyage of H.M.S. Samarang. By 

 Arthur Adams and Lovell Reeve, FF.L.S. 



Genus Hemipecten. 



Hemipecten Forbesianus. Hem. testd orbicularis Anomiaformi, 

 tenuissimd, hyalind, concentrice lineatd, linearum interstitiis eocimie 

 reticulatis ; valvd inferiore planulatd, postice auriculatd, auriculd 

 longitudinaliter radiatd, sinu infra profunda, margins opposito 

 subtiliter denticulato ; valvd superiore convexd, extus interdum. 

 decussatim rugosd, vix auriculatd; cardine edentulo, ligamento 

 angusto, marginali, cartilagine parvo solido in cavitatem centralem 

 superficiariam valvis ambabus ligamentum intersecante ; pellucido- 

 albd, valvd superiore interdum rufo-aurantio radiatd. 

 Hab. Sooloo Archipelago, Eastern Seas. 



The subject of the foregoing description, which constitutes an ex- 

 tremely interesting discovery in the acephalous family Pectinacea, is 

 an inequivalve shell, partaking of the characters of Pectcn and Ano- 



* Four Zamias of other species are now flowering at Kew. 



25* 



