296 MEMOIRS OF THE CARNEGIE MUSEUM. 
We refer it with some doubt to the genus Synchiropus Gill. It is very close 
to Synchiropus lili described by Jordan and Seale from Samoa, but it may not be 
congeric with Synchiropus opercularis, the type of the genus. Except for the 
compressed head, the species are very much like Callionymus. 
334. Calymmichthys xenicus gen. et sp. nov. (Plate XXXVI, fig. 2). 
We give description of the type, No. 6027, Carnegie Museum Catalog of Fishes, 
one hundred and thirty-five millimeters in total length, which came from Sagami 
Bay. 
Head 3.5 in body-length to base of caudal; depth 7.5; eye 5 in head (including 
opercular flap) ; snout 3; interorbital space 5 in snout; maxillary 3.2 in head; D. IV-8; 
A. 7; C. 11; P. 19; twenty-two pores in lateral line. 
Body cylindrical, tapering evenly to caudal; breadth of depressed head behind 
pre-opercular spines equal to distance from anterior border of eye to tip of opercular 
flap; interorbital space narrow, its width 3 in eye; snout long, straight in profile, as 
is dorsal surface of head; profile arched over eye; interorbital space and dorsal 
surface of snout flat, forming an angle with sloping sides of head and snout; maxil- 
lary of peculiar shape, its angle forming a prominent knob at angle of mouth under 
anterior border of eye; depth of space between snout and premaxillaries two-thirds 
length of eye; teeth in upper jaw in broad, villiform, semicircular patch, not ex- 
tending beyond apex of arch in sides of jaw; teeth in lower jaws along whole length 
of mandibular rami anteriorly, of breadth and shape to correspond to those in 
upper jaw; vomer and palatines toothless; pre-opercular spine as long as eye, with 
seven spinules as long as width of spine on dorsal edge, all antrorse but last two; a 
strong tooth at base pointing forward; opercle with distinct free flap, as in Syn- 
chiropus opercularis, its tip free, its length equal to diameter of eye; gill-opening 
small, not as large as pupil, at upper angle of opercle; upper surface of head with 
slightly roughened patch on bony surface, larger than eye. 
First dorsal spine elongate, 3.25 in body-length, second 7.5, last two-thirds 
length of second, all when supine reaching approximately base of first ray of second 
dorsal; first ray of latter 6.33 in body-length; last double ray elongate, 4 in body; 
extending to base of caudal rays; latter slightly less than length of head; tips of rays 
slightly exserted; first anal ray 10 in body, last 6; latter not reaching caudal; anal 
membranes strongly incised; pectorals 1.5 in head; ventrals 4.33; upper membrane 
beginning at level of fourth pectoral ray, extending beyond anal insertion. 
Lateral line with long, low arch anteriorly, as long as head and two-thirds di- 
ameter of eye from dorsal base at its end. A thin but prominent fold of skin ex- 
tending from pectoral tips to base of caudal, flexed upward. 
