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XII. Descriptions of New Species of the Genus Bassus. 

 By Thomas Desvignes, Esq. 



[Read 1st July, 1861.] 



Having already given a list of indigenous Bassi, in the Catalogue 

 printed for the British Museum, I do not think it necessary to 

 recapitulate them here ; their descriptions are accurately given 

 by Grav. Vol. III. Teh. Eur. pp. 312—357. The following I 

 consider to be eleven new distinct species, and have, therefore, 

 ventured to describe them as such. The females in this sub-genus 

 of the family of the Bassi vary : — thus the apex of the abdomen 

 in some species is but little compressed, in others the remaining 

 segments from the second are completely so, forming, as it were, 

 a narrow dorsal ridge — but the males are mostly similar to one 

 another in their habits, and probably from this fact Gravenhorst 

 did not think it necessary to form another sub-genus. 



New species described : — ■ 



Bassus rufocinctus, D. 

 „ maculatus, D. 

 ,, picitans, D. 

 ,, scabrosus, D. 

 ,, albicinctus, D. 

 „ frenator, D. 

 „ thoracicus, D. 

 ,, Jlavus, D. 

 ,, planus, D. 



„ *compressus, $ ( ? B. M. C. 91—19). 

 ,, pulchellus, D. 

 „ elegans, Grav. $ 



„ * „ ¥ D. 



Bassus rufocinctus. 

 Segmentis 1 et 2 crebre punctatis, 2 — 5 rufo-marginatis ; coxis 



et femoribus nigris, tibiis et orbitis oculorum internis flavis, 



scutello nigro. 

 Long. 2 — 2^ lin. ^ et ? . 



Head — apex of mandibles and the inner orbits of the eyes, 

 extending above and a little below the antennae, yellow. Antennce 

 filiform, more than half the length of body. Thorax gibbous, 

 with a line before and a small dot at the base of wings yellow. 



