166 CALIFORNIA ACADEMY OF SCIENCF-S. 



Ill tlu; intestine we fiiul l)t't\veeii the imior cuds of tlie epithelial cells a layer 

 of coimec'tivu tissue, .streniitlieiiiiii^ as it were that side of tlie perienteric sinus (fig. 

 111). Both oesophagus ,im<1 intestine are enclosed hy a tliiii mesenteric sac, which 

 is nipped by the septa (Hg. Ill, ihck.) and pressed close to the chloragogen cells. 



Spi'fmnlltecii. These are much broader than those of Sp. S?nithi or Sp. tnmPi^U, 

 hut resemble more those of Sp. Eiseiii and t'ip. (pmternakasis. Their position in 

 somites vii, viii, i.\, is in the anterior part of the somite, opening in the intersegmental 

 groove and pointing backwards. Their pores are in line with the dorsal couple of 

 setaj, or 3 and 4. The muscular part is tubular, smaller, and consists of two layers, 

 one inner of epithelial cells, one outer thicker, of circular muscles. The inner epi- 

 thelial layer, which is a direct continuation of the epidermis of the l)ody-wall, consists 

 of very tall, narrow, coliuniiar cells, while the thick inii>ciilar coating is a direct con- 

 timialidii of the eircMilar muscular layer of the body-wall. The free end of the 

 s|)ermatlK'ca is wavy and warty in outline, and consists of much shorter epithelial 

 cells, simply covered by the peritoneum. The spermatheca is verv broad and very 

 flat (fig. 118). 



8perm-saci>. There are two pairs of lobulate sperm-sacs in xi ami .\ii projecting 

 from the anterior septum. They are situated principally donsally, and resemble those 

 of Sp. tameai!^, but are much less lobulate than those, and very much less lol)ulate 

 than the sperm-sacs of tSp. Elfteni, judging from sections of the species sent me by 

 Prof. Frank Smith for comparison. 



Large masses of free spermatogonia and spermatozoa are seen in front of the 

 ciliated rosettes. 



CUintad roseftef( (tig. 100) are large and very regularly folded. Each rosette 

 sends out a long tubular lip into the sperm-sacs, in way which I have figured in fig. 

 119c. In a cross-sectioned specimen I found tliis lip far back in the posterior part 

 of xii. The liiwer convolute lip of the funnel is almost absolutely regular, and similar 

 in each of the four rosettes. The spermducts appear to resemble those of Sp. tnmexis 

 and Sp. Ei»eid. The spermiducal pore is situated just outside of the tnbercula puber- 

 tatis in the anterior part of xx, just as in Sp. Eiseni. 



Primlateii. Sinitli is the first to describe the prostates in Sparganophilus. In 

 Sp. tnmesix they api)ear not to be present, as Benham does not mention them. In Sp. 

 Bcn/inmi there are four pairs opening in somites xxiii, xxiv, xxv and xxvi, in front 

 of setie 1 and '1. The prostates are consti'ucted on the same principle as the prostates 

 in AcanlhiM|iili(l;i' and ( 'ry plodrilida', and consist of two parts; one basal and 

 muscuhir, line apical ami glamhilar. The glandular |)art is tubular, straight or folded, 

 of considerable length, but conlined to one somite. The glandular part contains an 

 inner epithelium, and surrounding it clul)-like glandular cells of varying lengths, 

 giving to the surface of the pro.state a wavy and irregular appearance. The prostates 

 in this species dilhr from those of Sp. Sniitlti by having a muscular duct or l)as;il 

 part. 'IMiis latter does not exist in Sp. Sniif/ii, \\\v. glandular part in the latter species 

 being immediately attached to the body-wall. 



\(plti'ttli<i. There is undoubtedly some difi'erence in the location of the most 



