SOME NEW AMERICAN MOSQUITOES 71 



in side view * 0.4 mm. ; reaching almost one-fifth the length of the pro- 

 boscis, or almost one-third of the standard, bearing dark bronzy scales 

 and some fine hairs, some coarser and outstanding ones near base. An- 

 tennae about as long as the proboscis ; tori hemispherical, black, lighter 

 shining near tip ; joints dark, rugose, with a small, black-bordered white 

 ring at base and with shining white pubescence ; whorls mostly of five 

 long black hairs, wath light reflection at tips ; basal joint about four times 

 as long as wide, in side view, the other joints a little longer. Eyes dark, 

 partly with coppery luster, cJmost contiguous at vertex. Face black. 

 Clypeus nude, dark, with lighter luster, ovate. Occiput black, with 

 creamy white narrow curved scales and black upright forked ones ; the 

 former are broader near the margin of the eyes eind at the sides, narrower 

 and smaller in the middle, no dark curved scales present ; the forked 

 scales shining golden near tip in certain lights, the extreme apices often 

 whitish, a color which may be produced in certain position in the entire 

 lateral forked scales. Some coarse black bristles along the margin of the 

 eyes, two especially long ones at the vertex projecting forward, separated 

 from the other ones by a considerable interval. Sides of head clothed 

 with flat creamy scales. 



Prothoracic lobes remote, small, ochraceous gray, with a greenish white 

 luster, with a row of three long and two small bristles and some narrow 

 curved white scales behind. Mesonotum : Standard 1 .3 mm. ; chitin 

 ochraceous, pale with dark markings ; the blackest ones before and above 

 hase of wings encircled by a lighter stripe, thus forming an ocellar spot, 

 which is fairly obvious in certain lights, though by far not so well marked 

 as in ocellatus ; anterior part of disk with two median broad dark stripes 

 separated by a median ochraceous furrow, each bearing a longitudinal 



' We emphasize the side view, since it is obvious that the proportion of proboscis to 

 palpus must be different in dorsal aspect, the clypeus covering the basal part of both 

 organs. While this circumstance practically does not alter the proportion where the 

 palpi are longer or at least half as long as the proboscis, its effect is considerable in 

 forms with very short palpi. Thus the dorsal aspect in our form gives us a proportion 

 of almost 1 : 7. Moreover, the proboscis is often curved mostly in the median plane ; 

 therefore drawing its lateral aspect we get its real length, in dorsal view only its projec- 

 tion on the optical plane. Thus logically we should prefer the side view measurement, 

 and as this view allows us to take the standard and the length of the abdomen as well 

 frcrn the same drawing, this way of measuring seems the most rational as well as the 

 most economical. At least ihe method by which the proportion is established should 

 be given in descriptions, since otherwise comparison is impossible. 



