11 
AGAMOFILARIA GEORGIANA, new species. 
( Figs. 1 to 25.) 
1906: A new species of parasite in man, Stiles, 1906, Apr. 21, 839-840, N. York 
M. J. (1429), V. 88 (16); 1906, Apr. 21, 1232, J. Am. M. Ass., Chicago, v. 46 (16). 
Specific Diagnosis. — AgamojUaria: Adults unknown. 
Agamic form : Length 32 to 53 mm. Body cylindrical, of more or less uniform diame- 
ter the greater part of the length, with a maximum diameter of about 560 to 640 jn ; 
gradually attenuated toward both extremities, slightly more gradually cephalad tlian 
caudad. Mouth terminal, central, circular, small, unarmed, but surrounded by six 
papillae. Four of these are prominent, submedian, 23 jli elevations, having in some cases 
almost the appearance of lips; two smaller papillae are latero-median. Anus a trans- 
verse slit, about 44 to 56 ju in transverse diameter, situated ventrally, 64 to 128 ju from 
end of tail. Tip of tail provided with a small conical projection 8 to 13 yu long by 
4 u in diameter. Excretory pore 0.432 to 0.520 mm. from anterior end. Cuticle in 
general without transverse striation, except for a fine transverse striation in the anal 
region, especially postanal, and a (probably pseudo-) striation in the esophageal 
region. Median lines visible externally in glycerine specimens merely as lines of 
demarcation between the muscular fields; on section, median bands are very slender, 
but are visible, and extend centripetally below the muscles, widening in breadth. 
Lateral bands rather prominent, and may be traced practically the entire length of 
the worm; they may attain a breadth of 96 //, but they decrease in breadth cephalad 
(to about 15 m) and caudad; they are divided into a dorsal and a ventral portion, 
which are not necessarily symmetrical and which are separated by a distinct line of 
single, subcuticular cells; the cells of the lateral bands are chiefly subcuticular, but 
near the head they extend centripetally in a single row in each half. Attached to 
the lateral bands, and hanging into the body cavity each side is a sinuous, longi- 
tudinal ridge, resembling the head-glands of strongyles, and provided with a central 
longitudinal canal which empties at the excretory pore; in the bridge of the esopha- 
geal region this glandular structure possesses a large apparently unilateral nucleus 
(296 to 316 u by 90 to 132 //), situated latero-ventrally. Esophagus simple, 2.5 
to 2.9 mm. long, 88 to 114 in diameter (anteriorly) to 334 // in diameter 
(posteriorly) ; its lumen is triradiate, each ray measuring about 10 /o Chyle 
intestine straight, or very nearly so, rather large, at first compressed laterally, 
then rather quadrangular, with fibers running from the submedian lines toward 
the body wall; farther caudad it becomes flattened dorso-ventrally, measuring 
about 300 jJL transversely by about 200 u dorso-ventrally; its cells are columnar, 
about 9 u in diameter by 30 to 90 u high; the cuticle of the lumen is about 6.6 to 8.8 // 
thick. Rectum about 200 // long. Body cavity almost completely occupied by the 
intestine, lateral, longitudinal glands, and a reticular structure extending centripe- 
tally from the muscles toward the intestine; a considerable amount of granular mate- 
rial also present (? some of this possibly representing the primordium of the genital 
glands). 
H.abitat. — Agamic form taken from superficial sores on the ankle of a negress 
{Homo sapiens africanus), at Darien, Georgia, U. S. A. Life history and source of 
infection known. 
Type Material.— U. S. P. H. & M. H. S., No. 9726. 
The following details were observed: 
GENERAL EXTERNAL CHARACTERS. 
Size. — The worms (figs. 1-2) vary in length from 32 to 53 mm., the 
eighteen specimens giving the following* measurements: 32 mm., 
34 mm., 36 mm., 37 mm., 38 mm., 40 mm., 42 mm., 45 mm., 47 mm., 
49 mm., 50 mm., 52 mm., and 53 mm. 
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