Linn&an Society. 329 



minal joints of the labial longer and slenderer. Mentum with 2 

 large lateral lobes and a strong conical one in the centre. 



Example. 0. Tentyrioides. 



4. Cylloscelis. 



Head broad, eyes small. Thorax subquadrate-cordate. Elytra 

 sublinear. Tibia?, anterior dilated, with a shallow notch, the apical 

 spine broad and lanceolate, hinder longer, slender and curved : tarsi 

 anterior with the 4 basal joints cordate. Antennae not longer than 

 the head, basal jointthe longest and stoutest, 3rd pyriform, 2nd, 4th 

 and following subovate. External maxillary palpi with the 3rd joint 

 nearly as long as the 2nd, 4th elongate and nearly linear : labial 

 with the 3rd joint long, subfusiform-truncate : mentum with a strong 

 trigonate tooth in the middle. 



Example. C. ellipticus. 



5. Metitjs. 



Head suborbicular : eyes prominent. Thorax subquadrate-cordate : 

 scutel dividing the elytra which are elliptical, the apex slightly 

 emarginate. Anterior tibiae not deeply notched : anterior tarsi with 

 the 3 basal joints dilated and obovate-truncate in the males. Antennae 

 slender, as long as the head and thorax, basal joint the stoutest, 2nd 

 not short, 3rd and following long. Labrum rather deeply notched : 

 mandibles short and strong ; terminal joint of palpi shorter than the 

 penultimate, elliptic -truncate ; mentum broadly emarginate and 

 simple. 



Example. M. harpalioides. 



The species noticed amount to 54, and were collected between 20° 

 and 56° south latitude. 



Read a paper on the affinities of Arachis and Voandzeia. By George 

 Bentham, Esq., F.L.S. 



The genus Arachis has been placed along with Voandzeia by De 

 Candolle among the Ccesalpinece in his tribe Geoffrece, which is cha- 

 racterized by having a papilionaceous corolla, combined stamina, and 

 a straight embryo ; but at the same time well aware of the affinity 

 subsisting between those two genera and the arborescent Geoffrece, 

 he suggests the probability of their forming a separate tribe. Mr. 

 Bentham has however, in the paper before us, clearly shown that the 

 real affinity of Arachis is with Stylosanthes, and consequently that its 

 proper place is among the Hedysarece, from which it differs chiefly 

 in the legume not separating into distinct articulations, a circum- 

 stance to be attributed to its position underground. Mr. Bentham 

 follows Ernest Meyer in referring Voandzeia to the Phaseolece. 



The perfect flowers of Arachis, accurately described by De Can- 

 dolle as to the calyx, corolla, stamina, ovarium, and style, are accord- 



