arr. 1. MOSQUITOES OF THE UNITED STATES—DYAR. 99 
only in the short interruption of the blue line across antescutellar 
space. The Jamaican specimens are so marked; but others from 
St. Thomas and Cuba have the line continuous. It is probably a 
local form of sapphirinus confined to Jamaica. The reported oc- 
currance in Louisiana needs verification. No material is before me. 
Distribution —Island of Jamaica and Louisiana. 
United States Records. 
LovIsIANA ! Baton Rouge (J. W. Dupree). (No material before me.) 
URANOTAENIA ANHYDOR Dyar. 
Uranotaenia anhydor Dyar, Proc. U. S. Nat. Mus., vol. 32, p. 128, 1907. 
A small brown mosquito. Mesonotum brown, thinly clothed; a 
broken indistinct blue line along margin before wing insertion. 
Abdomen black; venter grayish. Legs black, knee spots narrowly 
white, femora pale below. Wing scales black, without silvery Hne. 
The larvae live in permanent ponds, occurring only in the spring. 
‘The adults have never been taken except those bred. The species 
is rare. 
Distribution—Southern California. 
United States Records. 
CALIFORNIA: Sweetwater Junction, June 2, 1906 (Dyar and Caudell). 
San Diego, May 11, 1916 (H. G. Dyar). 
Genus MEGARHINUS Robineau-Desvoidy. 
Megarhinus RoBINEAU-DESVoIDy, Mem. Soc. d’Hist. Nat., Paris, vol. 3, p. 
403, 1827. 
Megaurhina Macquart, Dipt. Ecot., vel. 1, pl. 1, p. 32, 1838. 
Toxorhynchites Howarp, Mosq., pp. 155, 235, 240, 1901. 
Ankylorhynchus Lutz in Bourroul, Mosq. do Brasil, p. 58, 1904. 
Lynchiella LAWIELLE, Act. y Trab. 2 Cong. Med. Lat._Amer., vol. 2, p. 18, 
1904. 
Worcesteria BANKs, Phil. Journ. Sci., vol. 1, p. 779, 1906. 
A genus of large showy insects of tropical and subtropical distribu- 
tion. The adults do not bite, the proboscis being curved and adapted 
to extract honey from flowers. The larvae feed entirely on other 
mosquito larvae which occur in tree holes and similar locations. The 
species of this genus should be classed as strictly beneficial to man. 
On account of the restricted habits the species are rare. 
The genus has been divided into three subgenera on the structure 
of the palpi. The United States species belong to Megarhinus proper. 
KBHY TO THA UNITED STATES SPECIES OF MEGARHINUS. 
1. Male with white on front tarsi; female with joints 2, 3, 4 of front and mid 
tarsiow hitetmarke d= 2s 21 Sel ee ee rutila Coquillett. 
Male with no white on front tarsi: female with joints 2, 3 of front and mid 
CALSiowhiLehmarked==" eS) Se septentrionalis Dyar and Knab. 
