432 BULLETIN OF THE BUREAU OF FISHERIES. 



1625. Petroscirtes azureus Jordan & Seale, new species. Samoa. 



Head 4 in length; depth 5.5; eye 4.5 in head; snout projecting, 3.20 in head; dorsal 37; anal 27; 

 interorbital equal to orbit; chin with 6 small barbels. 



Body elongate, compressed, naked; depth of caudal peduncle 2.2 in head; mouth narrow, situ- 

 ated on the ventral surface of head, overhung by snout; a single outer row of round pointed teeth in 

 each jaw, 18 in upper and 26 or more in lower, with several additional inner rows in lower jaw, an 

 immense curved fang-like tooth on each side of lower jaw, the length of which is two-thirds of eye; 

 one small tooth on head of vomer; a single dorsal fin, whose origin is on nuchal region just above the 

 posterior margin of postorbital, and which terminates at base of anal, its anterior rays not filamentous, 

 the vertical height of the fin about 3.2 in head; origin of anal midway between tip of snout and base 

 of caudal, vertical height of fin equal to orbit; caudal rounded, equal in length to pectoral, 1.65 in 

 head; origin of ventral in front of pectoral, its length 2.18 in head. 



Life colors olivaceous, a deep blue-black lateral band, broader and more distinct indigo-color 

 behind; dorsal, anal, and caudal jet-black, edged with white, the indigo-black caudal V-shaped, leav- 

 ing the angles of the fin broadly white; head with the dark band continued forward as brown, edged 

 above and below with black; pectoral and ventral clear, uncolored. 



- ' >-,> 



Fig. 109. — Petroscirtes azureus Jordan & Seale, new species. Type. 



Color in spirits yellowish brown; thorax, belly, and chin lighter, a darker band with black 

 margins from snout to posterior margin of opercle, from this point to the caudal the entire band 

 becoming black and broadening until it occupies the base of caudal and entire fin except the upper 

 and lower posterior margins and tip, which are yellow; anal black with yellow margin; caudal dusky, 

 becoming black posteriorly, with a narrow margin of yellow; pectoral and ventral white. 



This handsome fish is close to Petroscirtes filamentosus, but differs in having 8 barbels or tentacles 

 on the chin and throat, and in not having the anterior dorsal spines elongate. 



One example' from Apia, type no. 51796, U. S. National Museum, length 3.75 inches. 



1626. Petroscirtes grammistes (Cuvier & Valenciennes). Yap; East Indies. 



Btennechis grammistes, Cuvier &. Valenciennes, Hist. Nat. Poiss., xi, 2S5, 1836, East Indies. 

 Petroscirtes grammistes Giinther, Fische der Sudsee, 197, 1S73, taf. 115, fig. F, Yap, China. 

 Petroscirtes anema Bleeker, Amboina and Ceram, 273. 



This handsome species, with 3 black stripes, is unknown to us. 



1627. Petroscirtes rhynorhyncrius Bleeker. Palau Is.; Fate (Seale) ; East Indies. 



Petroscirtes rhynorhynchus Bleeker, Amboina and Ceram, 273. Gimtber, Fiscbe der Sudsee. 195, taf. 115, fig. E, Palau. 

 This species is unknown to us. It has 2 black lateral bands besides 1 on the dorsal. 



1628. Petroscirtes tseniatus (Quoy & Gaimard). Tahiti; Papua; Caroline Is.; Tonga; Guam; 



Paumotu; Fiji; East Indies. 

 Aspidontus txniaius Quoy & Gaimard, Voy. Astrolabe, 719. pi. 19, fig. 4, 1S34, Guam. 

 Petroscirtes txniatus Gunther, Fische der Sudsee, 195, Tahiti, Papua, Carolines, Tonga, Paumotu, Fiji. 

 Petroscirtes paradiseus Bleeker, Amboina, v, 495. 



This species we have not seen. 



1629. Petroscirtes tapeinosoma Bleeker. Samoa (Gunther); Fat£; Kaiatea and Nukahiva (Seale); 



East Indies. 

 Petroscirtes tapeinosoma Bleeker, Amboina, 64, Amboina. Gunther, Fische der Sudsee, 195, taf. 115, fig. D, Apia. 



