166 CALIFORNIA ACADEMY OF SCIENCES. 
In the intestine we find between the inner ends of the epithelial cells a layer 
of connective tissue, strengthening as it were that side of the perienteric sinus (fig. 
111). Both cesophagus and intestine are enclosed by a thin mesenteric sac, which 
is nipped by the septa (fig. 111, mes.) and pressed close to the chloragogen cells. 
Spermathece. These are much broader than those of Sp. Smithi or Sp. tamesis, 
but resemble more those of Sp. Hiseni and Sp. gquatemalensis. Their position in 
somites vil, vill, ix, 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 
sete, or 3and 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 body-wall, consists 
of very tall, narrow, columnar cells, while the thick muscular coating is a direct con- 
tinuation of the circular muscular layer of the body-wall. The free end of the 
spermatheca is wavy and warty in outline, and consists of much shorter epithelial 
cells, simply covered by the peritoneum. The spermatheca is very broad and very 
flat (fig. 118). . 
Sperm-sacs. There are two pairs of lobulate sperm-saes in xiand xii projecting 
from the anterior septum. They are situated principally dorsally, and resemble those 
of Sp. tamesis, but are much less lobulate than those, and very much less lobulate 
than the sperm-sucs of Sp. Hiseni, 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. 
Ciliated rosettes (fig. 109) are large and very regularly folded. Each rosette 
sends out a long tubular lip into the sperm-saes, in way which I have figured in fig. 
119¢e. Ina cross-sectioned specimen I found this lip far back in the posterior part 
of xu. The lower 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. tamesis 
and Sp. Hiseni. The spermidueal pore is situated just outside of the tubercula puber- 
tatis in the anterior part of xx, Just as in Sp. Hiseni. 
Prostates. Smith is the first to describe the prostates in Sparganophilus. In 
Sp. tamesis they appear not to be present, as Benham does not mention them. In Sp. 
Benhami there are four pairs opening in somites xxiii, xxiv, xxv and xxyi, in front 
of sete 1 and 2. The prostates are constructed on the same principle as the prostates 
in Acanthodrilidee and Cryptodrilidee, and consist of two parts; one basal and 
muscular, one apical and glandular. The glandular part is tubular, straight or folded, 
of considerable length, but confined to one somite. The glandular part contains an 
inner epithelium, and surrounding it club-like glandular cells of varying lengths, 
giving to the surface of the prostate a wavy and irregular appearance. The prostates 
in this species difter from those of Sp. Smithi by having a muscular duct or basal 
part. ‘This latter does not exist in Sp. Smithi, the glandular part in the latter species 
being immediately attached to the body-wall. 
Nephridia. ‘There is undoubtedly some difference in the location of the most. 
