THE CANADIAN ENTOMOLOGIST. 299 



Habitat : Bayamban, Pangasinan, Luzon, Philippine Islands. Taken 

 May 15. 



Described from one specimen collected by Capt. W. P. Chamberlain, 

 Asst. Surg., U. S. A., after whom it is named. In the same collection 

 were Ciilex tnicroanmdatus, Theob.: C. gelidus, Theob.; C. an?iulifera, 

 Ludlow; Mansonia annuli/cra, Theob.; Myzomyia Lud/owi, Theob.; 

 Myzomyia T/iorntonii, Ludlow ; Stegomyia sciitellaris, Walker ; and 

 Myzomyia Rossii, Giles, var. i7idefiuata, n. v., Ludlow, an unusually large 

 number of species for one collection. 



As another instance of variation, I have received during the last year, 

 from different parts of the P. I., specimens of a Myzomyia apparently new, 

 yet lying so close to Rossii and Liidlowi that it has been difficult to be 

 sure just where they belong. The differences hardly seem to be specific, 

 and are, besides, most of them very unstable, and after much hesitation I 

 have decided to publish it as a variety of Rossii. 



Myzomyia Rossii, Giles, var. indefinita, n. v. — Female: Head brown, 

 covered with white curved scales on the vertex, some large ones projecting 

 forward as a white tuft between the eyes, white forked scales on the 

 occiput, brown on the sides; antennae brown, verticels and pubescence 

 white, basal joint testaceous ; palpi brown, last joint broadly white tipped, 

 a narrow white band near it, and another dividing the remainder of the 

 palpus in half (very like Ludlowi), basal part dark and quite heavily 

 scaled; proboscis dark, tip light; eyes brown; clypeus brown. 



Thorax gray and sparsely covered with slender hair-like curved white 

 scales, and a few heavier ones projecting forward at the neck, a dark 

 median line, widening just cephalad of the scutellum so as to form a small 

 spot, narrow lateral ridges appearing as dark lines, running from the 

 scutellum about half the length of the mesothorax ; scutellum with 

 hair-like white scales ; metanotum brown ; pleura gray, with brown spots 

 almost forming bands. 



Abdomen gray, densely covered with golden hairs. 



Legs : coxae and trochanters white, scaled with dark tips so as to 

 form a light band at base of leg ; femora all brown, a subapical yellow 

 band on the fore femora, the tip dark ; this marking sometimes occurs on 

 the other legs and sometimes is wanting on all; tibiie brown, with a narrow 

 apical yellow band ; metatarsi the same ; tarsi on fore and mid-legs 

 basally and apically banded except the last joint, which lacks the apical 



