NO. 228G. THE NEW VOPEPOD FAMILY SPHYRIIUAE—WlLoON. 573 



Inside the trunk (Fig. 31) considerable development has taken 

 place ; the five rows of intestinal processes are now very much in evi- 

 dence and fill a large portion of the body cavity. Each of the lateral 

 rows extends out obli(][uely from the surface of the intestine ; the dor- 

 sal ones reach the dorsal body wall about halfway between the 

 midline and the lateral margin, just inside the dorsoventral muscles, 

 but the ventral ones do not reach the ventral wall. Instead they are 

 more nearly horizontal and extend against the sides of the muscles, 

 in some cases pushing a short distance between them. The dorsal row 

 extend vertically upward and reach the dorsal wall of the trunk along 

 the midline. There are thus two narrow spaces between the rows 

 dorsally and a wide ventral space that is partially filled with spongy 

 chitinogen tissue. The intestine still presents its general outline and 

 all the processes stop before reaching the rectum. The ovaries and 

 cement glands have also developed considerably and are plainly 

 visible along the lateral margins, with quite an interval between 

 them at the center. 



The color of immature specimens is snowy white, becoming brown- 

 ish as the female matures, and this brown is much deepened in pre- 

 servatives. Measurements are given of two adults since they differ 

 in details; the first figures given belong to the specimen shown in 

 figure 1, the second to the specimen whose head is shown in figure 13, 

 and which evidently resembled one of Kr0yer's figures. 



Total length, including posterior processes, 60-45 mm. Length of 

 cephalothorax, 10-10 mm.; Avidth 13-16.50 mm. Length of neck, 

 35-15 mm. Length of trunk, 16-12 mm.; width, 10-15 mm.; thick- 

 ness, 6-5 mm. Length of posterior processes, 8-16 mm. Length of 

 egg strings, 20-20 mm. The second specimen thus has a wider ce- 

 phalothorax, a shorter neck, a shorter but wider trunk, and longer 

 posterior processes. 



As the females mature all the body regions thicken and the pos- 

 terior processes become more and more profusely branched. A third 

 stage of the latter is shown in figure 7, and the matured female is 

 seen in figures 1 and 2. 



From the above measurements it will be seen that one of the adults 

 had processes fully twice the size of those on the other specimen. The 

 internal anatomy of the matured trunk is shown in ventral view in 

 figure 32. The intestine is considerably increased in diameter, and is 

 nearer the dorsal surface of the trunk. On either side of it lies the 

 long ventral row of processes, reaching nearly the whole length of the 

 trunk and narrowed at either end. Here and there, especially toward 

 the posterior end, a process is found which does not reach the whole 

 width of the row, and then the adjacent processes on either side of it 

 come together for the remainder of the distance. The processes have 

 also grown inward over the ventral surface of the intestine and down- 



