14 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. G5. 



the opinion that they are the same species. The former was de- 

 scribed from specimens parasitic on Ceroflastes eufhorbiae Cock- 

 erell in Jamaica and the latter from specimens reared from Cero- 

 plastes actinifot^nis Green as well as several other species of scale 

 insects in Ceylon. 



The species is apparently widely distributed, the national collec- 

 tion containing material from Hawaii; Los Banos, Philippine 

 Islands ; St. Croix, Virgin Islands ; and Ancon, Canal Zone, in addi- 

 tion to the type localities. 



PROSPALTELLA DIASPIDICOLA SUrestri. 



Prospaltella dmspidicola Silvestbi, Reale Accad. dei Lincei, vol. 18, 1909, 



p. 564. 

 Prospaltella nligatae Nakayama, Philippine Journ. Sci., vol. 18, 1921, 



p. 99, pi. 1, fig. 2. 



The National Collection contains several slide mounted cotypes 

 of diaspidicola Silvestri received from the author through Dr. L. O. 

 Howard. A single slide-mounted cotype of niigatae Nakayama is 

 also in the collection. These cotypes have been compared and seem 

 to be identical. The former name was proposed for specimens of a 

 parasite reared from. Aulacas pis pcntagona (Targioni) from South 

 Africa and the latter for a parasite of the same scale in Japan. 



The National Collection also contains three slides bearing a large 

 number of specimens said to have been parasites on mulberry scale, 

 Gifu, Japan, reared by U. Nawa, January 30, 1899. The mulberry 

 scale mentioned was doubtless Aulacaspis pentagona. One slide in 

 the collection bears two specimens reared from Aulacaspis penta- 

 gona at Campinas, Brazil, by F. Noack. 



This species is quite similar to herlesei Howard, but apparently 

 differs by having smaller wings with the marginal fringe a little 

 more than half as long as the greatest wing breadth ; the praescutum 

 bears only two pairs of chaetae, the anterior pair being situated 

 approximately midway between the anterior and posterior margins 

 and about as far from each other as from the lateral margins, the 

 posterior pair located just in front of the scutellum; the first dorsal 

 segment of the abdomen is distinctly reticulated at base. 



ENCARSIA FORMOSA, new specUs. 



This species belongs to the luteola group in which the middle tarsi 

 are 4-jointed, the fourth and fifth joints being connate. It differs 

 from luteola Howard by having the dorsum of the thorax distinctly, 

 almost opaquely, sculptured, and it is also to some extent darker in 

 color. May be distinquished from quaintancei Howard by the 

 wholly black scutellum. 



Female. — Length 0.6 mm. Antennae rather long and cylindrical ; 

 pedicel longer than the first funicle joint, the latter approximately 



