Descriptions and Records of Bees, 263 



The figures will indicate the pronounced difference in the 

 shape of the oesophagus. The anterior shoulder and the well- 

 defined waist are conspicaous characters in M. hamata. Both 

 lips of the vulva in M. pugnicaudata are somewhat prominent 

 and the vagina is straight_, while in the new species the ante- 

 rior lip o£ the vulva is especially swollen and boss-like, and 

 the vagina spirally curved. 



Figures 4 and 10 will indicate clearly the differences 

 between the spicules. 



Eeperences to Literature. 



Khalil, M. 1922. '' A Revision of the Nematode Parasites of 

 Elephants, with a Description of Four new Species." Proc. Zool. 

 Soc. London, 1922, part 2, pp. 205-280, text-figs, 1-71. 



Lane, Clayton. 1914. '' Bursate Nematodes from the Indian 

 Elephant." Ind. Journ. Med. Research, ii. p. 380. 



Leiper, R. T. 1909. ' Wissensch. ergebnisse der Schwedischen 

 Zoologischen Expedition nach dem Kilimandjaro, deni Meru, etc., 

 1905-1906.' Stockholm. 22. Vermes, pp. 23-26, figs. 1-9. 



XXIX. — Descriptions and Records of Bees. — XCVII. 

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



Megachile fortis vestali, Cockerell. 



Described from a male collected in Nebraska. Miss 

 Grace Sandhouse has collected a female at Jumbo Reservoir, 

 near Crook, Colorado, Aug. 18, 1921. It has exactly the 

 appearance of the male, except for the sexual characters. 

 The face is covered with bright reddish-fulvous hair, and the 

 ventral scopa is entirely red. The posterior basitarsi are 

 very broad. Among the known females, this is closely 

 related to M. emoryi, CklL, but is smaller, with redder hair. 

 It seems possible that M. emoryi is the true female of 

 M. fortis, Cresson, and that the present insect should stand 

 as a distinct species, M, vestali. 



Hoplitis grace^e, sp. n. 



2 . — Length about 9 mm. 



Black, rather narrow, with nearly parallel-sided abdomen; 

 head and thorax shining, but closely punctured ; mandibles 

 broad, 3-dentate j clypeus with lower margin strongly but 

 broadly emarginate ; disc of clypeus convex^ with no smooth 



