VISCERAL ANATOMY. 47 
color attached by delicate mesentery to the cardiac curvature of the ventral 
portion of the stomach. Its left end curves dorsally, slightly enfolding this part 
of the stomach, and forms a recurved lobe. When removed and spread out 
there is seen to be a slight constriction forming another terminal lobe at its right 
end. These lobes are not indicated by Peters in his drawing of the spleen of 
S. cubanus but otherwise the two organs appear similar. 
There is a large mesenteric gland (Plate 9, fig. 6) above the rectum, in the 
dorsal mesentery, about a centimeter posterior to the left kidney. It is 13 mm. 
long by 6.5 mm. in greatest width, with slightly lobulate border and a posterior 
notch for the insertion of a vessel. Other smaller glands are present, 2 or 3 mm. 
long, scattered throughout the great mesentery, particularly in the region of the 
stomach, where close to the pylorus is a large gland about 5 mm. long. 
The thyroid glands (Plate 5, fig. 1, ¢) are remarkably large, situated one on 
each side of the throat, posterior to the submaxillary glands. They are oval in 
shape and in one specimen, measured 22 by 9.5 mm., and 18 by 9 mm. respec- 
tively. 
The thymus (Plate 9, fig. 1, ¢) is a large median glandular mass partially 
investing the base of the trachea ventrally just anterior to the heart. It con- 
sists of two rounded lobes, one on each side, bound together by connective 
tissue. The greatest median length of the mass is about 11 mm. 
In addition to these, there is a glandular mass at the axilla and another 
just in front of the hip joint. The latter is rather large, and divided into two 
main masses, about 21 and 15 mm. long respectively, and each about a third as 
wide as long. These, as stated by Peters, may be lymphatic glands, or possibly 
scent glands. They were discovered by Poey in fresh specimens of Solenodon 
cubanus. There are no anal glands such as are found in Gymnura. 
Fresh specimens show no skin glands. What Dr. J. A. Allen (:08, p. 513, 
fig. 8) has figured.as a “‘glandular surface of left thigh”’ is apparently the result 
of partial maceration of the hair follicles at that region. These are very large 
and conspicuous and might readily be mistaken for the openings of glands. In 
fresh specimens, however, there is no trace of such an area, but the entire sur- 
face is well haired. ; 
Mesenteries.— The great mesentery suspending the intestine from the dorsal 
body wall is continuous for practically the entire length of the gut, and shows 
no special modification. A short narrow mesentery connects the liver and the 
small intestine and is continuous with a delicate membrane along the lesser 
~ curvature of the stomach. 
