122 PROCEEDINGS OF THE NATIONAL MUSEUM vol. io4 



The male antrum is much longer than m the Schmarda specimens 

 reinvestigated by Stummer-Traunfels but this may be the result of 

 the distortion in that region. The penis papilla is a good-sized conical 

 eminence within which the prostatic duct parts from the ejaculatory 

 duct. The former leads into the elongated, horizontally oriented 

 prostatic vesicle (fig. 82,b) that has a muscular wall of moderate 

 thickness and an equally thick lining which was disintegrated into 

 strands. Prostatic glands were not in evidence. Ventral to the 

 prostatic vesicle the ejaculatory duct runs a slightly sinuous course, 

 gradually widening into a bulbous seminal vesicle with well-developed 

 muscular walls of cu'cular fibers. Into either side of this seminal 

 vesicle open short spermiducal bulbs that form the terminations of the 

 sperm ducts. With the seminal vesicle proper they form the tripartite 

 type of seminal vesicle common to many species of Stylochus. 



The female gonopore lies considerably behind the male one. As 

 typical of the genus, it leads mto a vertically ascending tubular vagina 

 that terminates with the reception of the two oviducts. As the vagina 

 was cut crosswise in the series of sections, its exact form could not be 

 determined. Stummer-Traunfels' figmes indicate a pronounced for- 

 ward curve of the vagina that did not seem to be present in my 

 specimen. The vagina has a fair muscular investment; cement glands 

 were not in evidence. 



Distribution : The Schmarda specimens came from Jamaica. The 

 present specimen was taken on the Fish Hawk Expedition at Playa 

 de Ponce Reef, Puerto Rico, Feb. 1, 1899. It is probable that the 

 species is fairly common in the West Indian region. 



Specimen : Anterior half as whole mount, posterior half as sagittal 

 serial sections (four slides) deposited in the U. S. National Museum. 



Remarks: This species belongs to the long list (26) of Stylochus 

 species (see Hyman, 1953) in which the marginal eyes are limited to 

 the anterior part of the body margin. It is fm-ther characterized by 

 a tripartite seminal vesicle of which the lateral limbs, formed of the 

 spermiducal bulbs, are unusually short. 



Stylochus oculiferus (Girard), 1853 



Imogine oculifera Girard, 1853, p. 367. 

 Stylochus oculiferus, Diesing, 1861, p. 570. 

 Stylochus floridanus Pearse, 1938, p. 71, fig. 24. 

 Stylochus oculiferiis, Hyman, 1940, p. 464, figs. 27, 28a. 



Remarks: A fine large specimen of this species was collected by 

 H. Dodge at Dick's Point, New Providence Island, in the Bahamas. 

 Preserved, it had retained the typical coloration of light brown dotted 

 with small rose-red spots. The specimen has been deposited in the 

 American Museum of Natural History. As will appear in this paper, 



