32 THE CANADIAN ENTOMOLOGIST 



of second t. c. on marginal to apex of latter, 935 ; length of first r. n , 

 969; diameter of second discoidal cell at apex, 663; diameter of ocelli 

 about 255 ; distance between middle and lateral ocelli about 170. The 

 t. m. nervure is straight, scarcely oblique, 306 long. 



Miocene shales of Florissant, Colorado, Station 14 ( l^V. P. Cpckerei/y 



1907). 



This is the first fossil Megachile. A nameless Chalicodovia was said 

 by Brischke (1886) to occur in Prussian amber. 



MOSQUITO NOTES.— No. 6. 



BY C. S. LUDLOW, M. SC, WASHINGTON, D. C. 

 Laboratory of the Office of the Surgeon-General, U. S. Arm}', Washington, D. C. 



In a collection of mosquitoes from the Philippine Islands, received 

 with no locality or date attached, is a most interesting lot of Stegomyia 

 fasciata (calopus). 



In all cases the thoracic markings are those of the type, sometimes 

 those of var. mosquito^ Desv.; the leg markings are normal ; the cephalic 

 markings vary from normal to an almost entirely pure white head, and the 

 abdomen from the normal to a pure white (dorsal surface) abdomen. 

 All grades of this latter peculiarity are present, some specimens having 

 only additional apical bands on the segments, some showing a continuous 

 median white stripe, some with all the segments but the 6th and 7th pure 

 white, while a few have the whole of the dorsal aspect of the abdomen, pure 

 white, with the exception of a small lateral brown spot on the last segment. 

 In a collection of about forty specimens twenty-one showed some form 

 of these variations. Once before I had one specimen of this species with 

 a white abdomen, and I have also reported one specimen with one hind 

 leg normal and the other lacking the white bands, but a lot like this has 

 never reached me before. There has also been received a new Cellia — 

 a genus not before reported from the Philippines. 



Cellia flava, n. sp. — Female. Head dark, covered mostly with light 

 yellow or white forked scales, a few brown ones laterad and ventrad, a 

 heavy bunch of very long, slender white curved scales projecting forward 

 between the eyes, some brown bristles around the eyes ; antennae almost 

 white, a minute brown band at the base of each row of verticels, verticels 

 and pubescence white ; palpi almost white, basal joint testaceous, the 

 distal half covered with yellow and white scales, i.e., the apex with a broad 

 band of white followed by a broad yellow band, a minute brown basal 



January, 1908 



