28 
PACIFIC SCIENCE, Vol. XXII, January 1968 
discussion: This species differs from the 
most closely related Both rio cep halus scorpii 
(Muller, 1776), from Coitus scorpius and 
other marine fishes, in that the cirrus pouch 
is large and muscular and tilting so con- 
spicuously to one side or the other from the 
median axis of the strobila that discrimination 
between the two species is not difficult. I have 
some doubt about the alleged occurrence of B. 
scorpii in Caranx or other pelagic carangids, 
because the type host is Coitus scorpius , which 
is definitely a benthonic fish. 
4. Bothriocephalus manuhriformis Linton, 
1889 
Fig. 4A-B 
habitat: Intestine of Makaira audax, Istio - 
phorus orientalis , Istiompdx orientdlis, Tetra- 
pterus dngustirostris, and Xiphids glddius; 
Hawaii. 
description (based on several immature 
specimens and five gravid specimens) : Strobila 
serrate, 25-334 mm X 0.35-3.8 mm; one speci- 
men 130 mm long, comprising 420 primary 
4B 
vd cp up 
0.8 mm 
Figs. 4A-B. Bothriocephalus manuhriformis Lm- 
§ ton, 1889. A, scolex of a specimen from Makaira sp., 
^ dorsoventral view; B, mature proglottis of a speci- 
men from Istiompax orientalis, dorsal view. 
