1036 IMOSQUITOES OF NORTH AMERICA 



by the more rounded mesonotiun, a character of generalization, and therefore 

 presumably a valid generic character. The European Coelodiazesis plumbeus 

 (Stephens) and the Himalayan C. harianensis (James) belong here. Major 

 S. E. Christopers has recently expressed the opinion that these three forms are 

 identical,* but at least the Indian one is amply distinct. Dr. Adolf Eysell, 

 without knownedge of the work of Dyar and Knab, established a genus for the 

 European form, also upon early-stage characters. 



The larvae live in the water in hollow trees. They feed upon the organic 

 matter in the water, but are also occasionally predaceous upon other mosquito 

 larvse occurring in the tree-holes. The method of hibernation is unknown, but, 

 as already suggested by Eysell, may be as partly grown larvae. 



The eggs of Ccelodiazesis differ from those of Anopheles in that the membran- 

 ous rim acting as float completely encircles the egg. This proves to be the case 

 in all three of the forms known and thus may be safely considered a generic 

 peculiarity. In hatching, the egg is split obliquely about two-thirds of the way 

 round, the inner end of the slit not quite reaching the center of the egg. Doctor 

 Eysell has treated the early stages of the European form very fully (Arch. f. 

 Schiff- u. Tropen-Hyg., xvi, 421-431, 1912), and Major Christophers has 

 treated the Indian species in an equally comprehensive manner (Indian Journ. 

 Med. Ees., iii, 489-496, pi., 1916). 



CCELODIAZESIS BARBERI (Coquillett) Dyar & Knab. 



Anopheles harberi Coquillett, Can. Ent, xxxv, 310, 1903. 



Anopheles barberi Dyar, Journ. N. Y. Ent. Soc, xii, 243, 1904. 



Anopheles barberi Dyar, Journ. N. Y. Ent. Soc, xiii, 108, 1905. 



Anopheles niger Herrlck {nomen nudum), Ent. News, xvi, 283, 1905. 



Anopheles bifurcatus Blanchard (in part, not Linnaeus), Les Moustiques, 164, 1905. 



Anopheles barberi Blanchard, Les Moustiques, 620, 1905. 



Anopheles barberi Smith, Kept. N. J. Agr. Coll. Exp. Sta., 1905, 671, 1906. 



Coelodiazesis barberi Dyar & Knab, Journ. N. Y. Ent. Soc, xiv, 177, 1906. 



Anopheles barberi Coquillett, U. S. Dept. Agr., Bur. Ent., Tech. Ser. 11, 12, 1906. 



Anopheles barberi Dyar, U. S. Dept. Agr., Bur. Ent., Circular 72, 1, 1906. 



Anopheles barberi Howard, Osier's Modern Medicine, i, 383, 386, 1907. 



Anopheles barberi Theobald, Mon. Culic, iv, 37, 1907. 



Anopheles nigripes Theobald (in part, not Staeger), Mon. Culic, iv, 40, 1907. 



Anopheles barberi Viereck, 1st Ann. Rept. Comm. Health Pa., 469, 1908. 



Anopheles barberi Morse, Ann. Rept. N. J. State Mus., 1909, 716, 1910. 



Ccelodiazesis barberi Thibault, Proc Ent. Soc. Wash., xii, 24, 1910. 



Anopheles barberi Theobald, Mon. Culic, v, 12, 1910. 



Anopheles nigripes Theobald (in part, not Staeger), Mon. Culic, v, 12. 1910. 



Anopheles barberi Knab, Amer. Journ. Trop. Dis. & Prev. Med., i, 36, 1913. 



Original Description of Anopheles barberi: 



Near Walkeri, but only about half as large, the upright forked scales of the occiput 

 chiefly yellowish-white, body devoid of scales, etc. Black, the base of the antennae, 

 clypeus, stems of halteres, coxge, and trochanters yellow, thorax and scutellum yel- 

 lowish-brown, front portion of the former and the pleura more yellowish, occiput 

 devoid of appressed scales; thorax somewhat polished, thinly bluish-gray pruinose, 

 the hairs and bristles chiefly black, those of the abdomen mostly yellowish, of the 

 coxae yellow; femora with a distinct bluish tinge, tarsal claws simple; wings 

 hyaline, the scales brown, the lateral ones lanceolate, petiole of first submarginal 

 cell about one-third as long as that cell, base of the latter much nearer the base of 

 the wing than that of the second posterior cell, hind cross vein less than its length 

 from the small cross vein; length, 3 mm. 



Three females, collected August 14th, 1902, and August 17 and 19, 1903, on 

 Plummer's Island, Maryland, by Mr. H. S. Barber, after whom the species is named. 

 Type No. 6959, U. S. National Museum. 



Description of Female, Male, Larva, axd Egg of Ccelodiazesis barberi: 



Female. Proboscis moderately long and slender, straight, uniform ; labellae 

 long, lanceolate, dull luteous, with small outstanding black setas ; vestiture 

 appressed, bronzy brown. Palpi nearly as long as the proboscis, uniform ; vesti- 



* An Indian tree-hole breeding anoplieles, A. harianensis James = A. (Ccelodiazesis) plmnheus, 

 Haliday. Indian Journ. Med. Res., iii, no. 3, 489-496, pi. ; January, 1916. 



