CYCLOTHONE ACCLINIDENS. ZA 
another question, yet one to which differences in the positions of the teeth 
in various individuals suggest an affirmative answer. On the specimens of 
C. acclinidens no such motion is observable; pressed in one direction or the 
other they break before moving. The maxillary teeth of C. signata are 
shorter, more numerous and more erect than those of C. acclinidens. 
Station. Latitude, Longitude. Depth. Temperature, Bottom, 
3082 6° 2 N. 80° 41’ W. 1793 fathoms 35.8° F, Gn. M. 
Cyclothone acclinidens sp. n. 
Plate J, fig. 4. 
Brera Die AS 15-20) V7; Bo 10: 
Although this form is very much like Cyclothone microdon it is readily 
distinguished ly differences of dentition. Body slender, compressed, 
moderately long. Head narrow, about one fifth of the total length, pointed 
at the snout. Eye small, nearly half as long as the snout, one eighth of 
the length of the head. Snout short, narrow, sharp at the tip. Mouth 
large, more than four times as long as the snout; intermaxillaries short, 
hardly one fifth as long as the maxillaries ; maxillaries forming a broad 
curve down and backward, thin, rather narrow, furnished with teeth along 
the entire lower edge; lower jaws much stronger backward, uniting in a 
sharp point at the symphysis. A low prominence or angle above the upper 
jaws, at each side of the top of the snout. All of the teeth are slender 
acicular, very sharp, more or less bent and have striz passing obliquely 
toward the point and to the concave side of the teeth; intermaxillary 
teeth six to eight, smaller, less slender; maxillary teeth about fifty-two, 
very small forward, nearly vertical in the anterior third of the length, 
gradually becoming much larger backward, more or less closely inclined 
forward toward the jaw, slightly bent outward near the points. Though 
the inclined teeth only number about half as many as the vertical they 
occupy about two thirds of the length of the jaw. One or two of the hind- 
most teeth are smaller and nearly vertical. Vomerine teeth about four in 
a short series at each side slightly convergent forward. Palatine teeth in 
a group near the front ends of the bones, Branchiostegal rays fourteen 
to thirteen. On each side there are thirteen luminous organs in the bran- 
chiostegal series, sixteen between the isthmus and the anal, and sixteen 
