458 Mr. C. J. Gahan on new Longicorn Coleoptera. 
Alveopora retepora , Ell. & Sol., sp. 
1786. Madrepora retepora , Ell. & Sol. Zoophytes, p. 166, pi. liv. 
figs. 3, 4, 5. 
1846. Alveopora retepora , Dana, Expl. Exp. Zooph. p. 512. 
Branching, also in irregularly lobate masses. Corallites 
subpolygonal, varying considerably in size, the smaller, 2 to 
3 millim. in width, intermingled with the larger, which range 
from 4 to 5 millim. and occasionally to 6 millim. 
Macclesfield Bank, 35 fath. 
Alveopora Tizardi , sp. n. 
Corallum growing in flattened irregularly lobate expansions; 
under surface uneven and covered by delicate wrinkled epi- 
theca. Calices polygonal, from 1 to 1*3 millim. in diameter; 
twelve septa, of the usual spinous character, alternate longer 
and shorter, but none reach the centre of the calice ; calice 
shallow, the space occupied by the septal spines ; walls very 
cribrate, so that the corallum is light and spongy in character. 
This species is mainly characterized by the small size of 
the corallites. Only a single specimen obtained. 
Tizard Bank, 27 fath. 
LIV. — On new Longicorn Coleoptera from Madagascar . 
By C. J. Gahan, M.A. 
The species described in the following paper were for the 
most part contained in a small collection recently sent to 
Mr. Meyer-Darcis, who brought them to me for determination. 
The types of all the species will be placed in the British 
Museum collection. 
Closterus longiramis , sp. n. 
C. fabeJlicorni ( ) similis, sed differt colore multo pallidiore ; oculis 
subtus plus approximatis ; articulo tertio antennarum quam 
quarto breviore, ramo elongato munito. 
Long. 29, lat. ad humeros 10 mm. 
Hab . Madagascar (Cr. F. Scott Elliot , Esq.). 
Head and prothorax dark brown ; prothorax thickly punc- 
tured and glabrous above, furnished with a short tawny fringe 
at the anterior and posterior borders ; the lateral margins 
