356 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 42. 



laries for nearly the diameter of the eye; lower jaw mcluded; anterior 

 nostril in a very short tube; posterior nostril reduced to a small 

 pore; maxillary reaching vertical from middle of eye. Teeth in 

 moderate bands, arranged in about fifteen oblique rows in the half 

 of the lower jaw and twenty in the half of the upper. Gill opening 

 large, extending down in front of sixteen pectoral rays. Caudal 

 elongate, slightly rounded, joined to dorsal and anal for tliree- 

 fourths its length, the rays evenly graduated, the union without 

 notch. Pectoral notched, the lower lobe consisting of five rays and 

 reaching more than half way from disk to vent. Disk rather small, 

 widely separated from the vent, which is but little in advance of the 

 origin of the anal. (Fig. 2.) 



Top and sides of head and body dusted and marbled with dark 

 brown; abdomen and thi'oat pale or pinkish; pectoral a little darker 

 than the body, with irregular dusky bars above; anterior margin of 

 dorsal with dark blotches; posteriorly these are replaced by dark bars 



which zigzag obliquely downwards 

 a\\\\\u!| across the fin; anal a little darker 



~ I ~~^ than dorsal, crossed by about seven 



,:':'':^ pairs of narrow dusky bars, inclos- 



i j ing each a wider light bar; caudal 



with three oblique bars; peritoneum 

 _-^ silvery, with dark spots. 

 ■■*" ' " '^'1^ Resembling C. pulchellus in the 



Fig. 2.— Relative SIZE AND POSITION OF VENT • i^ ^ ^„+* „ i,„+, „ j-i,„ , „j-* 



AND DISK- OF cyclogastek tessellatus. ^ido counectiou bctwcen the verti- 

 cal fms, but the gill slit much wider. 

 In addition to the type, two cotypes were taken at station 5041 

 in the same locality, at a depth of 140 fathoms; and one at station 

 4867, in the Sea of Japan, off the coast of Korea, depth 150 fathoms. 



4. CYCLOGASTER AGASSIZII (Putnam). 

 LiparisagassizuFvTi^ AM, Proc. Amer. Ass. Adv. Sci., 1874, p. 339 (Gulf of Tartary), 

 Abundant in tide pools and along shore throughout northern Japan. 

 It was taken but once with the dredge, at station 4808, Straits of 

 Tsugaru, Japan, at a depth of 47 fathoms. Like many other northern 

 shore forms, its southern distribution is determined by that of the 

 cold current, which can be detected a little beyond Matsushima 

 Bay. 



5. CYCLOGASTER FRENATUS, new species. 

 Plate 42, fig. 1. 



Type.~C&t. No. 73329, U.S.N.M., 94 mm. long, from station 4809, 

 in the Sea of Japan, off the northwest coast of Hondo; depth 207 

 fathoms. 



Measurements in hundreths of total length, exclusive of caudal 

 fin (78 mm.): Length of head 25; depth opposite front of disk 14.5; 

 opposite gill slit 20; greatest width of head 18; greatest depth of body 



