NO. 2264. BEES IN THE NATIONAL MUSEUM. 3—COCKERELL. 207 



AUGOCHLORA FLAMMEA Smith. 



Female. — Tacubaya, Mexico (O. W. Barrett) ; Motzorongo, Vera 

 Cruz, Mexico, January (H. Osborn). Compared with one from F. 

 Smith's collection. 



AUGOCHLORA VESTA TERPSICHORE (Holmberg). 



Female. — Zaruma, Ecuador, January 30, 1916 (F. W. Rohwer). 



MEGALOPTA mALIA Smith. 



Cayenne (French Guiana), both sexes collected by Wm. Schaus. 



MEGALOPTA FORNIX Vachal. 



Female. — Chauchamayo, Peru ; from W. F. H. Rosenberg. I sup- 

 pose this large form is Vachal's fornix, as it agrees in nearly all re- 

 spects; the lateral ocelli are, however, distant from the occipital bor- 

 der much less than twice the diameter of an ocellus. 



MEGALOPTA FORNIX PANAMENSIS. new subspecies. 



Female. — Similar to the Peruvian insect just recorded, but smaller, 

 13-14 mm. long, anterior wing 10.5 to 12 mm, ; lateral ocelli distant 

 from occipital border much less than twice diameter of an ocellus; 

 protuberance on labrum thick, not like a horseshoe. These charac- 

 ters would appear to refer the insect to the Brazilian M. sodalis 

 Vachal, but the third antennal joint is conspicuously longer than the 

 fourth, as in fornix. 



Male. — What I suppose to be the male of this subspecies has the 

 abdominal structure and general appearance of M. idalia, but the face 

 below the antennae is testaceous delicately suffused with green (not 

 bicolored), the flagelhnn is wholly ferruginous (not darkened api- 

 cally), and the area of metathorax, though shining and polished in 

 middle, is quite large. 



Female (type).— Trinidad Rio, Panama, March 23, 1912 (Busck) ; 

 also Boquete, Chiriqui, Panama ; male, Paraiso, Canal Zone, Panama, 

 January 28, 1911 (Busck). If the insect from Peru cited above is 

 separable from M. fornix, the species will stand as M. panamensis, 

 with the Panama form as typical. 



Type.— Cat. No. 21G81, U.S.N.M. 



MEGALOPTA TABASCANA, new species. 



Male. — Length a little over 12 mm., anterior wing 10; general form 

 and appearance as in the M. idalia group, but first two abdominal 

 .segments dull rufo-testaceous, with the hind margins broadly black- 

 ened: remaining segments dark, with strong yellowish-green tints, 

 the third obscurely reddish basally; third ventral segment with a 

 deep median sulcus reaching to the base, as in the Peruvian M. 

 aethautis Vachal. Head and thorax yellowish green; labrimi and 



