GARMAN: THE CHIMAEROIDS. 259 
it extends backward to the first valve ; and a shorter one beginning at the valve 
and containing two other valvular constrictions which respectively end the 
second and the third turns, included between the first valve and the third. 
On Plate 8, the intestine is slit open from the pyloric end of the stomach to 
the vent to show the long, spiral fold, the three muscular and valvular con- 
strictions, and the two short spirals. The portion of the intestine occupied by 
the longest spiral is more than twice as long as that occupied by the two short 
ones. The diagrammatic figure 4 of Plate 4, by means of a dotted line, traces 
the course taken by the food from the pylorus to the cloaca. The intestines 
of Callorhynchus callorhynchus, Plate 10, are in most respects similar to those 
of Rhinochimaera. The numerous points of resemblance common to those of 
Chimaera are quite as readily seen. Professor T. J. Parker, 1880, gives a 
good figure of the spiral folds of Chimaera monstrosa, and describes this portion 
of the canal in these words, “I found a valve of only three and a half turns, 
remarkable from the fact that the attached edge did not form a regular spiral, 
but for a part of its course (namely, during the first turn) formed a slightly 
sinuous antero-posterior line. In consequence of this, the second compartment 
of the intestine was fully half as long again as the bursa entiana.” 
The pancreas of Rhinochimaera is small and elongate; in Figure 2 of 
Plate 1, it lies above the intestine immediately behind the left lobe of the liver. 
As it appeared in the specimen, it was bent backward upon itself, though it 
may be that normally it is nearly straight. Apparently the spleen is closely 
bound with it. Above the pancreas, in the figure, and somewhat forward, lies 
the left testicle, from which the seminal tubes are traced back to the seminal 
vesicle immediately below the enlarged and lobed hinder extremity of the 
kidney. The reticulated seminal vesicle, the lobulated kidney, the disk-like 
testicle, and the complex of seminal ducts are shown more distinctly on Plate 8. 
A lower view of these organs appears on Plate 9, Figure 2, in which the re- 
ticulation of the vesicle is not seen. 
The liver is drawn in Figure 1 of Plate 9. It has three lobes, the right one 
of which is much the longer and is notched at the tip. The gall bladder lies at 
the right side of the stomach and its duct enters the intestine close behind the 
stomach at the forward extremity of the spiral fold. 
In the bulbus of the heart, Plate 9, Figure 3, there are two rows of valves, 
the anterior of which contains three valves, the posterior four, Plate 9, 
Figure 4. 
Generally the visceral features of Rhinochimaera are in close correspond- 
ence with those of the other genera of the group. And this is quite as true of 
the internal sexual organs as of other internal organs, contrary to what might 
perhaps have been expected from the great external differences in the claspers. 
To fully establish this, one has but to compare the present figures of Rhinochi- 
maera with those of the sexual organs of Chimaera monstrosa published by 
Hyrtl, 1854. 
VOL. XLI. — No. 2 2 
