282 Mr. T. D. A. Cockerell — Descriptions and 



its whole length ; in A. fu.<fcnf< the terminal part of the 

 under surface is brown. 



Skull apparently somewhat smaller than in A. fuscus, but 

 the age of the type is not very certainly determinable. An- 

 terior part narrower, the breadth between the outer corners 

 of the anteorbital foramina and the interorbital breadth both 

 distinctly less. 



Incisors very stout and heavy, decidedly thicker tlian in 

 specimens of A. fuscus of apparently similar age. 



Dimensions of the type : — 



Tail (vertebra in skin) 64; hind foot (dry) 28. 



Skull: tip of nasals to back of frontals 28'5 ; greatest 

 breadth 23; nasals 15 x 6'3 ; interorbital breadth 7*5 ; breadth 

 between outer corners of anteorbital foramina 17*6 ; palatilar 

 length 16'2 ; front of incisors to back of m^ 21'5 ; upper 

 tooth-row (crowns) 8*4 ; combined breadth of upper in- 

 cisors 4* 7. 



Hab. Osorno, S. Chili. 



Type. Adult. BM. no. 16. 11. 14. 4. Presented by Don 

 Carlos E. Porter to Mr. J. A. Wolffsohn. 



The British Museum contains eleven specimens of Aco- 

 ncemys fuscus, received at different dates from Mr. T. Bridges, 

 but whether all were from the '* Valle de Las Cuevas, on the 

 east side of the Andes, near the Volcano of Peteroa, altitude 

 6000'," where Mr. Bridges discovered the species, there is, 

 unfortunately, no evidence to show. But all agree in tlie 

 characters used above in separating the southern form, which 

 is probably an inhabitant of the higli slopes on the Volcano 

 of Osorno, some little distance from the town of the same 

 name. 



Since the time of Mr. Bridges no examples of this genus 

 have come to the British Museum, nor has our indefatigable 

 correspondent Mr. Wolffsolm been able to see or hear of any. 

 Consequently this additional specimen, representing a second 

 and more southern species of the genus, is an extremely 

 welcome accession. 



XXV. — Descriptions and Records of Bees. — LXXIV. 

 By T. D. A. COCKKRELL, University of Colorado. 



All the bees recorded in the present part are in the U.S. 

 National Museum. 



Audrena hir/uhrescens, n. n. 

 Andrena Ivguhris, Lepeletier, 1841 (not Erichson, 1840). 

 S .— Belvidcre, Tunis, May 10, 1899 (P. Magretii). 



