59 



obtained was one purchased by the Zoological (Jardens from 

 an animal dealer, and no record as to its precise original 

 habitat exists save that it was a Cuban iguana. It had l>een 

 in the < lanlens from .Mine 1'it, HK)6, until its death, September 

 11, HH)(i. The cause of death was not determined. 



Chbocephalm macari, n. s. (Plate VIII). 



In examining the intestine of a pig-tailed macaque, Macacus 

 ni-inr.ilrinus (P. Z. G. Lab., 508), there were found free in the 

 lumen and in several tiny siihiniicous cysts of the wall seven 

 small nematodes (Path. Hist., 1673), which from their gross 

 ap|>earanres were at first lielieved to be identical, but which 

 njx)ii careful examination proved to include five esopha- 

 gostomes and two examples of a globocephalus. It is im- 

 possible at this time to indicate which of the specimens 

 inhabited the cysts and which were free in the intestinal tube. 

 Both specimens of the globocephalus were females and of 

 nearly the same size. The larger measured 16 mm. in length, 

 and at its thickest level, near the middle of the body length, 

 0.5 mm. in diameter. Cuticle delicate, transparent, distinctly 

 striated transversely. The worm tapered regularly and 

 gradually anteriorly to a rounded head measuring 0.25 mm. 

 in transverse diameter; and posteriorly tapered to a finely 

 conical, straight tail. No cuticular expansions or swellings. 

 Head (Fig. 3) rounded and provided with a prominent 

 spheroidal cavity, 0.17 mm. in transverse diameter, with an 

 elliptical chitinous ring about the mouth and a triangular 

 chitinous ring (sides convexly curved) at its base about the 

 esophageal opening, these connected by a lateral longitudinal 

 piece. Over the head the surface presents a peculiar mosaic 

 appearance (Fig. 1) given by certain prism-like cells (feebly 

 polarizing; are they crystalline?), whose ends underlie the 

 cuticle about the buccal cavity. Mouth terminal, elliptical, its 

 long axis dorsoventral, the chitinous ring about it measuring 



