862 MOSQUITOES OF NORTH AMERICA 



sharply curved upward, each with a hair-tuft at tip, a row of hairs across the 

 base basal angle small and approximated to the process ; five hairs within ; a 

 row of long hairs at base. Maxilla conically tapered, about as long as wide, 

 divided by a narrow suture; inner half with two rows of cilia and four long 

 spines on margin toward base, a tuft of long hairs at tip ; outer half with a long 

 and a short filament near the suture and a spine on the other side ; palpus pro- 

 portionately rather large, with two long and two short apical digits. Thorax 

 rounded, wider than long; hairs abundant, the small hairs in coarse, stellate 

 bunches. Abdomen moderate, the anterior segments shorter; lateral hairs of 

 first segment multiple, triple on second, double on third to fifth, triple on sixth ; 

 secondary hairs in coarse stellate tufts, black. Air-tube short and stout, tapered 

 outwardly, about two and one-half times as long as wide ; pecten of a few well- 

 spaced teeth, extending two-thirds the length of tube, closely followed by a 

 single hair-tuft; single pecten-tooth a long spine with a basal branch. Lateral 

 comb of eighth segment of about twenty large scales in a double row; single 

 scale elongate and uniform, tip rather bluntly rounded, uniformly fringed with 

 rather short spinules. Anal segment as long as broad, with dorsal plate reach- 

 ing well down the sides, a row of long spines on posterior margin ; dorsal tuft 

 of two groups of long hairs ; hair-tuft on posterior angles of plate of five long 

 hairs; ventral brush of moderate tufts, with a small triangular plate on each 

 side of barred area ; anal gills long, about twice as long as the segment, broad 

 and bluntly rounded. 



The larvge live in water held by vegetable tissues. Mr. Busck found them 

 once in dirty, black water in cacao-shells and once in water in the flower-spathes 

 of Heliconia. 



Windward Islands, Lesser Antilles. 



Dominica, July, 1905 (A. Busck) ; Guadeloupe, July, 1905 (A. Busck) ; 

 Mont Pelee, Martinique, July, 1905 (A. Busck). 



The normal habitat of the larvae of Aedes husckii can only be determined by 

 further collections. It seems that in this species specialization of habits has 

 not gone to the extreme that we find in most Sabethini, where the larval 

 habitat is often restricted to a single plant. In some of our specimens of the 

 larva the pecten-teeth of the air-tube extend beyond the insertion of the hair-tuft. 



AEDES EXCRUCIANS (Walker). 



Culex excrucians Walker, Ins. Saunders., 429, 1856. 

 Culex excrucians Giles, Gnats or Mosq., 260, 1900. 

 Culex excrucians Blanchard, Les Moustiques, 312, 1905. 

 Culex excrucians Theobald, Mon. Culic, v, 350, 1910. 



Original Description of Culex excrucians: 



Foem.: Fulva; proboscis testacea, apice fuscescens ; antennae fuscae, "basi testa- 

 ceae; abdomen fuscescens, fasciis testaceis; pedes testacei, tarsis pallide fuscis 

 testaceo fasciatis; alae subeinereae, venis testaceis subciliatis ; halteres apice fusci. 



Tawny. Proboscis testaceous, long, straight, slender, brownish at the tip. 

 Antennae brown, testaceous towards the base, a little shorter than the proboscis. 

 Pectus paler than the thorax. Abdomen brownish, with a testaceous band on the 

 hind border of each segment. Legs testaceous, long, slender; tibiae darker than 

 the femora; tarsi very pale brown, with a testaceous band at the base of each joint. 

 Wings very slightly grayish; veins testaceous, slightly ciliated. Halteres testaceous, 

 with brown knobs. Length of the body 4 lines; of the wings 7 lines. 



Nova Scotia. 



We are entirely unable to place this species from the description. The large 

 size given by Walker (8 mm.), which is as large as Psorophora, is unusual in a 

 northern mosquito and certainly much larger than any plain-colored mosquito 

 of northern distribution known to us. The type is in the British Museum and 

 has been examined by Giles, but we have found no clue to its identity in his 



