THE SHORE FISHES. 329 



Petroscirtes mitratus Ri'i-pell. 



Atlas, 182S, p. Ill, tal'. 2!S, fig. 1. 



Nos. 08908, M. C. Z. 29522, three specimens each I5 inches, and 0908(), 

 four .specimens Ig to if inches long, from Moen, Truk tiroup, Caroline Islands. 



Petroscirtes quadrimaculatus, sp. nov. 

 Plate 7, figurr I. 



The collection contains two specimens. No. 09069, if and if inches lonp; 

 from Arhno Atoll, JMarshall Islands, the larger of which is the type, and one 

 specimen, M. C. Z. 29393, 1.75 inches long from Papeete, Tahiti, Society Islands. 

 The type No. 65980, U. S. N. M., gives the following measurements: — 



Head 4.25 in body length; depth 6.07; eye 3.33 in head; snout 3.33; head 

 rather sharply conical; posterior nostril with a slightly raised membranous 

 edge, anterior nostril with short tubes; two rows of narrow, close-set, rounded 

 incisors in u]3per jaw, those of inner row larger, no teeth visible on vomer or 

 palatines; one row of larger incisors in the front of the truncate lower jaw, and a 

 huge backwai'd curved, fang-like canine tooth in the anterior angle of each sitle 

 of lower jaw, the lower incisors horizontal; caudal truncate; dorsal 41 ; anal 29. 



Color: back, upper side of body and top of head light brown; a series of 

 large quadrate dark brown spots, separated by narrow interspaces, from back of 

 eye to base of caudal, below which an abruptly narrow silvery stripe extending 

 from tip of lower jaw and lower border of eye to base of caudal; the surface below 

 this band plain whitish. The narrow interspaces between the spots on body 

 are made up of pairs of light colored lines diverging at top and extending to base 

 of dorsal, darker between, but not so dark as the cjuadrate spots, and causing 

 spots to show faintly as if continuous to the dorsal; very narrow light colored 

 bars extending below from the middle, or a little in front of middle, to the anal; 

 the second interspace behind the pectoral continues in this waj'. 



Dorsal and anal are crossed by broad bars, parallel with the rays, coi-respond- 

 ing to the quadrate spots in position, the broad bars covering about .8 of width 

 of fin; above these a narrow whitish stripe with a xcvy narrow blackish boidci', 

 tips of rays white; the borders not ,-^liowing on anal, but tips of rays also white; 

 pectoral, ventral, and caudal pale. 



