70 



T. musculosum Ayres. This species is smaller than the last, 

 not exceeding four inches, so far as yet observed ; in form 

 resembling elongatum^ to which it is in fact more closely allied 

 than to glahrum. Tentacula ten, ramose, unequally developed, 

 two being somewhat shorter than the others. Owing to the 

 slenderness of the branches they wave with the least motion of 

 the water, having a plumose appearance, which readily distin- 

 guishes them from those of other species. Calcareous supports, 

 and oral circle similar to those parts in elongatum. Suckers 

 irregularly scattered, though a tendency to arrangement in rows 

 may be seen ; commonly without support on their sides, though 

 a few oval perforated plates occur; the sucking disk bearing a 

 strong plate like that of Sclerodactyla IriareMS, Longitudinal 

 muscles stronger than in any other Holothurian yet noticed on 

 our coast. To such a degree are they developed, that, in the 

 ordinary state of the animal, they press upon each other laterally, 

 and the transverse muscles are not visible. These latter, how- 

 ever, are also of great strength. 



No specimen has been obtained in such condition as to afford 

 descriptions of the intestinal, genital, or respiratory organs. 



The species was obtained in Massachusetts Bay in about 

 eighteen fathoms water. It is allied to elongatum in general 

 appearance and in muscular development, but differs widely in 

 the whole oral apparatus. 



Dr. Durkee read a letter from Dr. J. B. Johnston, Sher- 

 brooke, Can. detailing the case of a girl, a patient of his, 

 who had been suffering for several months with gastric 

 difficulties and a cough, which were suddenly relieved by 

 the vomiting, as she alleged, of a specimen of Salamandra 

 symmetrica. The account was accompanied by the speci- 

 men preserved in alcohol. The letter stated that the 

 patient being suddenly seized with nausea, hurried to the 

 door, and discharging the contents of her stomach on the 

 door-step, the salamander was observed in the mass. On 

 being taken up it was very sluggish in its movements, and 

 of a light color. It was kept living in water for a week, in 

 which time it assumed a darker hue. It was about two 

 inches and a half in lena:th. 



