128 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 51 



Female. — Thorax silvery-whitish pollinose, with two heavy shin- 

 ing black vittse, sides of front silvery-white pollinose becoming black- 

 ish posteriorly, abdomen black with silvery pollen in median vitta 

 and two or three fascia?. 



New Hampshire, District of Columbia, North Carolina, Georgia, 

 and Texas. 



Gymnoclytia occidentale, sp. nov. 



Male. — Thorax deep brassy to old-gold pollinose, with same vittse 

 as in occidua. Abdomen like occidua except that pollen is golden, 

 the ground color bright ferruginous and markings varying from 

 none to the usual ones strongly marked. 



Female. — Colored almost like the male of occidua. Thorax brassy 

 pollinose, with two broad heavy brown vittse extending from an- 

 terior margin almost to scutellum, and two very narrow linear vittae 

 between them. Abdomen the same as in the male, pollen being 

 golden, but no specimens occur with abdomen entirely ferruginous, 

 the usual markings being pronounced in all. 



Colorado and New Mexico to California. 



Type— Cat. No. 11,653, U. S. N. M. (female, Beulah, New Mex- 

 ico, Cockerell, July, 1902). 



Gymnoclytia immaculata Macquart. — Male. — Fuscous stripe of 

 abdomen wanting, median pollinose vitta more or less distinct. Ab- 

 domen yellowish, the third and fourth segments with lateral polli- 

 nose reflections. 



Female. — Thorax shining black, without pollinose markings ex- 

 cept the humeri, sides of front shining black, abdomen without 

 distinct pollinose vitta or crossbands, apical cell quite long petiolate 

 (as in the males of the preceding species). Abdomen distinctly red 

 on the sides, especially anteriorly. 



This form and Gym. occidua Walker are distinct. See Robert- 

 son's and the writer's notes in T. A. E. S., xxn (1895), pp. 66-67, 

 and Ann. and Mag. N. H., xx, pp. 283-284. 



Gymnoclytia femiginosa van der Wulp. — Male. — Thorax deep 

 golden or old-gold pollinose, with the same stripes as occidua more 

 or less apparent. Abdomen ferruginous, fuscous stripe hardly ap- 

 parent, but pollinose stripe present, and third and fourth segments 

 more or less pollinose, pollen being golden. 



Female. — Sides of front faintly golden-silvery, thorax shining 

 black, with three faintly golden pollinose vittse. Abdomen shining 

 black, with median pollinose vitta and third and fourth segments 



