580 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.48. 



HALICTUS MARINUS Crawford. 



On August 8, 1913, Mr. Frederick Knab took at Virginia Beach, 

 Virginia, four males and two females of this species. He stated 

 that the species was abundant on grasses on the beach just above the 

 high tide limit. 



AUGOCHLORA SORDISCUTIS Vachal. 



The collections contain several females from San Jose, Costa Rica 

 (Crawford, collector). One of the original series was sent to Mr. 

 Vachal, and the determination was made by him. 



Superfamily CYNIPOIDEA. 



Genus XYALOSEMA Dalla Torre and Kieffer. 

 Solenaspis Ashmead. 



In the table of genera by Dalla Torre and Kieffer * there are several 

 characters, which a reexamination of the genotype shows are incor- 

 rect. The eyes are hairy, the marginal cell is open along the anterior 

 border, and the scutellum does not possess a median furrow but 

 rather a subdepressed area bounded on each side by an indistinct 

 longitudinal carina. In some specimens of X, bifoveolata Cresson 

 from the West Indies these two carinae are very distinct. 



XYALOSEMA BIFOLEATA (Cresson). 



This species described in the genus Aspicera must be transferred to 

 this genus. 



ANDRICUS CHAMPIONI Cameron. 



Cynips championi Cameron, Biol. Cent. Amer. Hym., vol. 1, p. 70. 



Andricus championi Ashmead, Ent. News, vol. 10, 1899, p. 193. 



Cynips ashmeadi Dalla Torre and Kieffer, Das Tierreich, fasc. 24, 1910, p. 440. 



Dr. A. Duges in a letter to Dr. L. O. Howard wrote that Ashmead 

 was in error in stating that his specimens came from the roots of oak, 

 that on the contrary they came from twigs. It was due to this 

 error that Dalla Torre and Kieffer considered that the Ashmead 

 material must be another species and gave a new name for it. 



Superfamily SERPHIDOIDEA. 



HEXAPLASTA MARLATTI, new species. 



Female. — Length about 1.25 mm. Dark chestnut brown with the 

 head and apex of the abdomen somewhat darker; legs, including 

 coxae, almost honey color; base of antennae almost the same as 

 legs, the club brownish, pedicel distinctly shorter than the scape, 

 first joint of funicle almost twice as long as pedicel (fig. 1) ; scutellum, 



i Das Tierreich, Lief. 24, p. 73, 1910. 



