THE AXXALS 



AND 



MAGAZrXE OF NATURAL HISTORY. 



[EIGHTH SERIES.] 

 No. 39. .AIARGH 1911. 



XXYL — DescrlptioJis and Records of Bees. — XXXIV. 

 By T. D. A. Cockerel^ University of Colorado. 



LiTHANTHIDIUM, geu. IIOV. 



Related apparently to Anthidium ; robust, thorax above 

 very finely and densely punctured, sides of thorax with large 

 coarse punctures (this sculpture practically as in Dianthi- 

 dium saiji) ; hind tibiae densely hairy. Abdomen probably 

 with a ventral scopa, but it is not clearly preserved ; stigma 

 large ; marginal cell narrowly rounded at tip, the apex a little 

 below costa ; two submarginal cells, the second receiving both 

 recurrent nervures, the first some distance from base, the 

 second a little before apex ; outer side of second s.ra. with a 

 single gentle curve ; basal nervure strongly arched at lower 

 (basad) end, where it meets the transverso-raedial, the latter 

 being slightly arched outwards and not noticeably oblique. 

 The arching of the base of the basal nervure is also observed 

 iu the living (Asiatic) Protanthidium steloides, which differs, 

 however, in the shape of the second s.m., and iu having the 

 second r. u. going beyond apex of second s.m. There is 

 some resemblance to the fossil Pelandretia redncta, but in 

 Pelaiidrena the second s.m. is contracted apically and the 

 t.-m. is oblique. 



Lithanthidium pertriste, sp. n. 

 Black, very robust. Head and thorax about 4 mm. lono-, 

 abdomen about 4^, doubtless 5 when extended ; anterior 

 Ann, i& Mag. N. Hist. Ser. 8. Vol. vii. 15 



