NO. 2258 TAENIOID CESTODES OF DOGS AND CATS— HALL. 



45 



recorded a case in which he gives data and figures that must be 

 accepted as a case of this parasite from the brain of man. 



MULTICEPS GAIGERI Hall, 1916. 



Synonym. — Coenurus serialis Gervais, 1847a, of Gaiger, 1907, and 

 Dey, 1909. 



Sjieeific diagnosis. — MuUiceps: The head is somewhat piriform in 

 lateral A'iew and almost square when viewed en face, and is about 

 950 iJi in diameter. The weak rostellum is about 360 [jl in diameter and 

 bears a double crown of 28 to 32 hooks. The large hooks (fig. 47) 

 are 160 to 180 ^ long. The blade is of slight curvature; the handle 

 is nearly straiglit or only slightly sinuous, with usually a notch, 

 slight or very pronounced, on the dorsal border between the middle 

 of the handle and the union with the blade, the dorsal and ventral 

 borders approximately parallel 

 and the handle not tapering but 

 ending bluntly and at times with 

 a slight curvature dorsally at the 

 distal extremity; the guard is ap- 

 proximately cordiform in lateral 

 view, the point of maximum thick- 

 ness being a short distance from 

 the union w4th the blade and 

 handle, thus forming a neck prox- 

 imally and a roundly conical distal 

 portion. The small hooks are 115 

 to 150 p. long. The blade is 

 strongly curved; the handle is 

 long, straight, slightly sinuous in 

 outline, and tapering to a rather 

 blunt tip ; the guard is rather oval in lateral view, has a slight median 

 ventral depression without being bifid, and meets the handle at a 

 very obtuse angle, almost a straight angle. The suckers are compara- 

 tively large, set prominently at the angles of the quadrate head and 

 Avith relatively small intervals between adjacent suckers, and have 

 a bulb diameter of 310 to 330 ii. The neck is quite distinct, of 

 pn-aller diameter than the head, and may measure around 690 [ji, in 

 length. The entire strobila may measure from 25 cm. to 1.82 meters, 

 according to conditions and individual development. In a well-de- 

 veloped strobila, about 40 cm. long, the segments become square about 

 the middle of the strobila, being 5 mm. long and 5 mm. wide at a 

 distance of 20 cm. from the head. As the segments become longer 

 than Avide they become mature. At 30 cm. from the head they are 

 7 mm. long and 5 mm. wide. At 40 cm. from the head the segments 

 are 14 mm. long and 2 to 3 mm. wide. The entire strobila is rather 



-MlTLTICEPS GAJGERI. LARGE AND SMALL 



nooKS. From Hall, 1916o. 



