REPORT OF THE STATE ENTOMOLOGIST 1904 449 



aaa Air tube very short, not more than i| to 2 times as long as broad 



b Pecten teeth dentate on both sides, comb with 16-24 scales; head macu- 

 late. . .Small salt marsh mosquito, Culicelsa taeniorhynchus 

 hh Pecten teeth dentate on one side only 

 c Antennal tuft normal 



d Comb scales 28-40, pecten teeth about 14; head generally im- 

 maculate .... Salt marsh mosquito, Culicada sollicitans 

 dd Comb scales five, pecten teeth 7-9, minutely serrate near middle 



Protoculex serratus 



cc Antennal tuft reduced to a single hair 



e Pecten extending nearly to the apex of the air tube ; comb scales 



about 46, with subequal terminal spine 



Culicada atropalpus 



ee Pecten extending to the middle of the air tube; comb scales 10, 



each with a large median tooth and smaller lateral ones 



Yellow fever mosquito, Stegomyia fasciata 



hhh Pecten simple, with stout spines; comb a single row of 12 simple 



spines, stellate hairs on the body Howardina walker i 



hhhh Pecten absent; comb represented by a large plate with two long 

 barred setae posteriorly ; larvae about | inch long 



Megarhinus portoricensis 



aaaa No air tube or a very short one 



h Next to the last segment with a fiat dorsal area in which may be seen 

 two spiracles 



c Medium size species, floating just below the surface of the water; 

 comb consisting of a tooth-bearing plate 



d Comb teeth of equal length Anopheles barberi 



dd Comb teeth of two sizes, long and short 



e Comb teeth with large branches between them . 



Cellia albipes 



ee Comb teeth with only fine obscure pectinations 



/ Secondary teeth of the comb less than half as long as the primary 



ones. . A n o p h e 1 e s crucians, A.maculipennis 



// Secondary teeth of the comb over half as long as the primary 



ones. . .An o p h e 1 e s punctipennis, A. francis- 



c a n u s 



cc Large species with no comb ; mandibles strongly developed ; floating 



just below the surface of the water, limited to cold northern pools .... 



Eucorethra underwoodi 



hh Last segment usually with hooks, no spiracles apparent and no signs of 

 an air tube; larvae almost transparent, the only color being the black 

 eyes and pigmented air sacs in the thoracic and seventh abdominal 

 segments Phantom larvae, Sayomyia 



DESCRIPTIONS OF NEW OR INSUFFICIENTLY CHARACTERIZED SPECIES 



Culicelsa auroides n.sp. 

 Several larvae of this species were taken at Elizabethtown N. Y., 

 and were at first supposed" to be the young of C. a u r i f e r Coq. A 

 close study, however, showed marked structural differences between 



