966 The American Naturalist. [October, 
alone bear reproductive organs, and only on their distal portion, the 
result is that the division produces from each primitive zooid a gaster- 
ozoid flanked by two gonozoids. It is hardly necessary to say that 
this dimorphism is different from that in the Hydrozoa. 
Acanthocephali.— The systematic position of the Acantho- 
cephali has long been a problem, although from similarity of shape 
they were usually placed near the Nematodes, or round worms. Re- 
cently Dr. Hamann has been studying the subject, and finds® additional 
grounds in support of this view. He thinks that the water vascular 
system is homologous in each, while he recognizes the problematical 
acanthocephalan lemnisci in cervical or cephalic glands occurring in 
many Nematodes. 
On a New Species of Salamander from Indiana.—At the 
time of the meeting of the American Association for the Advancement 
of Science of the present year, at Indianapolis, Mr. A. W. Butler, of 
Brookville, Indiana, presented me with three specimens of a species of 
alamander which were taken in a spring near to Brookville. Two of 
these were living, while the third is an alcoholic specimen from a col- 
lection which embraces a number of other individuals from the same 
locality, belonging to Mr. Butler. 
The three specimens represent young, middle-aged, and mature in- 
dividuals, which have passed their metamorphosis. They agree nearly 
in their characters, They belong to a species which resembles the 
Spelerpes longicaudus, but are distinct in form, color, and habits, 
and belong, moreover, to the genus Gyrinophilus. The pre- 
maxillary bones are of feeble structure, and the spines are distinct 
and widely separated, contrary to the structure in the genus Spelerpes. 
The mature individuals, of which Mr. Butler possesses several, are 
much more robust than those of S. dongicaudus, having a short body 
and relatively long preaxillary region and head. With this the tail is 
as long as in the S. dongicaudus, and is similarly compressed. The en- 
tire animal is larger. The color is different from that of the S. dong? 
caudus. It is vermilion-red, as in S. ruder, and the superior surfaces 
of the head and body are irregularly spotted with dark brown, The 
sides of the tail are similarly irregularly brown-spotted, the spots not 
showing the least tendency to form the vertical bars characteristic of 
the S. dongicaudus. The form of the series of vomerine teeth is differ- 
ent. Instead of commencing at the posterior border of the internal 
nares, they commence opposite to the anterior border of the same, and 
` § Zoolog. Anzeiger, XIIL., p. 210. 1890. 
