108 



ochraceous pubescence; all other segments (also ventral) 

 with black hairs being long and very dense towards apex. 

 In all other respects similar to the $ of C. tricolor, Friese. 

 Long. 15 — 18 mm.; lat. 6 mm. 



4 specimens near Mendoza '^/^ 07 (800 mtr.). I dedi- 

 cate this species to my amiable host, Don Laureano Lyngbye 

 in Chacras de Coria. 



The type specimens are in my coUection. 



Coelioxys Santa Rosse n. sp. d". 



This species is allied to C. cariniventris, Friese, on 

 account of the longitudinal keel along the middle of the 

 ventral segments of the abdomen. 



cT. Black; first dorsal segment of abdomen red. Head 

 sparingly punctured, front and clypeus with abundant and 

 dense ashy grey pubescence. Thorax very sparingly and 

 finely punctured, its center being smooth and shiny. Scutellum 

 smooth and shiny, its middle lobe and lateral teeth being 

 strong and very prominent; bind margin of scutellum between 

 the lateral teeth, the middle lobe excepted, with some few 

 punctures. Abdomen sparingly and irregularly punctured, 

 ventral segments to a great extent red, 1. — 4. with a sharply 

 elevated longitudinal keel, 4. at apex with two strong spines 

 close to the end of the keel; armature of apical segments 

 of usual building. Wings hyaline, apical part fuscous, veins 

 dark brown, tegulse red. Long. 9 — 10 mm. 



Santa Rosa (Province of Mendoza) 1 specimen 1904. 

 The type specimen is in my collection. 



HoSmanseggia falcaria, Cav., and its visitors 

 amongst Bees. 



By A. C. Jensen-Haarup. 



Amongst the several species of plants that are found in 

 the Argentine Camp, there are few that can take place beside 

 the beautiful little Hoffmanseggia falcaria, which belongs to 

 the Ccesalpinia-grouip, as an attractive flower for bees*). 



*) It is even occasionally visited by humming-birds. 



