816 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 
Dengthy to Candalssccacceeewcaceis hod < teu sere se sciee ene emeedeeewied aearne ee ecce 0.140 
Depthiat orbit’ ssovcieeve-cads sstseraudece eeaacs ieee cemseeeecenes meee e ele sas 0.025 
Depthsat first dorsal :ccc08 eh oes eouges iciod jcewncs a ee edeac seen eeeeeies ceeds 0.037 
Depthiat second dorsal cveewsswassescices cued sees pece ces Saae cl oe ceca tae wane 0.034 
Depth of caudal peduncle .... 2.2. 222. 0 cece eee cee cee ee eed eens cone seen (7)0,020 
The scales are similar to those of the J. labracoides. 
MIOPLOSUS BEANT, sp. nov. 
The most slender species of the genus is represented by one specimen, 
which is the smallest obtained, which is referable to this genus. The - 
depth enters the total length six times, and the depth at the first anal 
spine enters the length of the vertebral column a little more than four 
times. Radii: D. IX—I.13; A. W—12; P.13. Vertebre: D. 10; C. 
15. The general characters are as in Jf. labracoides, but the scales are 
not preserved. The form of the head is that of a younger fish, but its 
proportions as compared with the body are not those of immaturity. 
The length enters the total 4.2 times, and the orbit enters it 4.5 times. 
The profile of the front is descending. The teeth of the inferior limb of 
the preopercle are obtuse and not well defined. There are impressions 
of seven branchiostegals preserved. 
This perch is named in honor of my friend Dr. T. H. Bean, of the- 
United States Fish Commission. 
Measurements. 
M. 
Total length -.......---.--- ie teied suid dlealseeaune salad Mawes dead aemeeasciseasienes 0.131 
Length of head . z conquers a Soar beduldee cadets aesest donuasoen cso 00a 
Length to line of first dora errr pet aideaise weiss eae uaieiealesei. duemerclese aleaut 0.040 
Length to line of second dorsal ... 22.02.20 cena cee ene ce eee eee eee ee nee 0.064 
Length to line of anal fin.........--..----.-----+ ee ais: Soa soietacismisaies wise ous eis 0.070 
Length to line of caudal fin ...... 2.202. 2 eee eee cece ce een eee cee eee 0.109 
Depth at orbit .-....-.-----. 222+... eras cr cael Becaneserotens su caanmueceucetee es 0.020 
Depth-at first dorsal Cay os oc.-5-2% 40265 aec ce deyswcicies ccnisine Session so esicccavncsins 0,023 
Depth at first anal ray .....--- 20 cane cee cee cee eee cee cee cent eee eee ee 0.019 
Depth of caudal peduncle......-.-- 2-2. -- gene cee nae cee ee cee eee eee eee eens 0.011 
PRISCACARA SERRATA, Gen: et a nov., Chromididis vel Pomacentridis 
affinis. 
Char. gen.—This type snigiit be included in the Pomacentride, but it 
differs from the genera now known in the possession of vomerine teeth, 
and apparently in having eight branchiostegal rays. 
In general, Priscacara may be characterized as P haryngognathi, with 
ctenoid scales and well-developed spinous rays. The preoperculum is, . 
in the typical species, sharply serrate on both borders. There are three 
anal spines, and the lateral line is well developed, not extending near 
the dorsal line. The caudal fin is rounded. The jaws are toothless. 
The pharyngeal bones, both superior and inferior, are closely studded 
with short, sessile, conical, teeth; a row of small ones stands on the ex- 
ternal border of the inferior pharyngeal. One dorsal fin. 
Char. specif —Form a regular wide oval, with a subequal contraction 
at both extremities. The spinous dorsal rays become longer than the 
