70 MOSQUITOES OF NORTH AMERICA 



digit at tip. Mental plate triangular, with a long central tooth and twelve on 

 each side, all very even and regular. Mandible quadrangular, triangularly 

 widened outward; a filament before tip; an outer row of cilia from a collar, 

 which is nearly parallel to the outer margin ; a short row of branched filaments 

 on the outer margin, followed by a slender detached one; dentition of four 

 teeth on a process, the first the longest; a long spine before, a broad lamella 

 and a stout filament with divided tip within ; process below continuous with the 

 basal angle, scarcely produced, irregularly indented on outer edge; a row of 

 hairs along outer margin ; a row of feathered hairs within and a row of long ones 

 at base. Maxilla irregularly spherical, unevenly divided by a suture; inner 

 portion much the larger, inner surface covered with long spinose hairs, mixed 

 with stout spines on margin; a conical prominence at tip, succeeded by a row 

 of hairs along the suture ; outer portion with two small filaments next the 

 suture. Palpus small, with four small apical digits. Thorax rounded, wider 

 than long, the hairs long. Abdomen slender, the segments rounded; lateral 

 hairs multiple on first two segments, single on the succeeding ones, all long. 

 Air-tube conically tapered, about five times as long as wide, dark with a pale 

 tip; four double subdorsal hairs and four single subventral ones; no pecten. 

 Lateral comb of eighth segment a very long row of single teeth; teeth conical, 

 with even spinules at tip. Anal segment about as long as wide, with a dorsal 

 plate reaching well down the sides ; dorsal tuft of four long hairs in pairs on 

 each side; two long lateral hairs on the plate; a pair of small subventral tufts; 

 no ventral brush. Anal gills moderate, equal. 



Mr. Busck obtained the larvae in the San Francisco Mountains of Santo 

 Domingo, August 29, 1905, in water between the leaves of an epiphytic plant 

 (Bromeliacese), associated with Wyeomyia mitchellii. He also captured a 

 number of specimens of the females which came in the daytime to the porch of 

 the house to bite and were annoying. 



Santo Domingo and Cuba. 



San Francisco Mountains, Santo Domingo, August and September, 1905 

 (A. Busck) ; San Antonio de los Banos, Cuba (J. H. Pazos) . 



WYEOMYIA CHRYSOMUS (Dyar & Knab). 



Phoniomyia chrysomus Dyar & Knab, Journ. N. Y. Ent. Soc, xv, 208, 1907. 

 Phoniomyia chrysomus Busck, Smiths. Misc. Colls., quart. Iss., HI, 75, 1908. 

 Phoniomyia chrysomus Theobald, Mon. Culic, v, 579, 1910. 



Geiginal Descbiption of Phoniomyia chbtsomtjs : 



^. — ^Proboscis long and slender, black; occiput dark scaled, a small silvery spot 

 on the vertex; prothoraclc lobes prominent, clothed with shining coppery scales; 

 mesonotum and scutellum clothed with dark scales with faint greenish and bronzy 

 luster, setae of scutellum dark; metanotum deep brown with a group of setae; abdo- 

 men black above with faint bluish sheen, beneath silvery white, the colors separated 

 in a straight line; legs dark, with brassy reflection beneath, the mid legs with the 

 third and fourth tarsal joints and the apex of the second silvery white at the side. 



Length. — 2.5 mm. 



One specimen, Tabernilla, Canal Zone, Panama (August Busck, collector), bred 

 from larvae in water In leaves of Bromellas. 



Type. — ^No. 10854, U. S. National Museum. 



Descbiption or Mau) of Wyeomyia chhysomus (Female and Labva Unknown) : 



Male. — Proboscis long and slender, uniform, labellae conically tapered, with 

 fine outstanding setae ; vestiture black, a line of lustrous silvery scales beneath. 

 Palpi small, one-tenth as long as proboscis, clothed with black scales and rather 

 long, fine setaa. Clypeus rounded-triangular, dark-brown, slightly pruinose. 

 Antennae moderate, the joints slender, subequal, the last joint shorter than the 

 preceding ones and slightly thicker, rugose, coarsely pilose, black; tori sub- 



