GAKMAX: THE CHIMAEKOIDS. 259 



it oxtenils 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 j)\loric 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 Callorhyuchus callorhynchus, Plate 10, are in most respects similar to those 

 of Khinocliimaera. The numerous points of resemblance common to those of 

 Ohimaera are quite as readily seen. Professor T. J. Parker, 1880, gives a 

 "■ood figure of the spiral folds of Chiraaera 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 Khinochimaera 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 a-e 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 Khinochimaera 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 estal)lish this, one has but to compare the present figures of Khinochi- 

 maera with those of the sexual organs of Chimaera monstrosa published by 

 Hyrtl, 1854. 



VOL. XLI. — NO. 2 2 



