NATURAL SCIENCES OF PHILADELPHIA. 147 



Schneider has well restricted it in the Systema Ichthyologias of Bloch,* assign- 

 ing to it the same essential characters as Cuvier himself. 



Aolostomatoid^e Raf. 1810. 



FlSTULARIAN^E Bon. 



9. Fistularia immaculata Comm. 



Two small specimens of this species were obtained at Simoda. 



PSEUDOCHROMIDOIDiE Mull. 

 PSEUDOCHROMIDINVE Gill. 



10. Cichlops Japonicus Gill. This species scarcely differs in general form 

 from its congeners, and is very nearly allied to the C. cyclop h thai m us of 

 Muller and Troschel. It is chiefly distinguished from that species by the 

 position of the bases of the ventrals, under the lower angles of those of the 

 pectorals. The color is tawny, much darker in the centres of the scales on the 

 back and on the sides above the pectorals. The posterior border of the orbit is 

 margined by a black crescent. The dorsal has a few minute black dots. The 

 membranous margin of the preopercle presents the appearance of being sus- 

 tained by rays. There are about fifty-two scales in a longitudinal row along 

 the sides. 



D ii. 25, A iii. 14, C 6, 9, 8, 5, P 19, V i. 5. 



The single specimen in the collection has a length of little more than four 

 inches. 



(Pharyngognathi Mull.) 

 Pomacentroid.e Bon. 



PoMACENTRINiE Bon. 



11. Pomacentrus dorsal is Gill. The body is oblong oval, with its abdomi- 

 nal outline more arched than its dorsal. The head is small, and its outline 

 from the nape to the snout is straight. The eye is large and near the profile. 

 The suborbital has a simple, strong tooth directed horizontally backwards, and 

 separated by a semi-elliptical sinus from the body of the bone. The suborbi- 

 tal beneath the eye has also one or two small vertical processes. There are 

 about twenty-five scales in a longitudinal row on the side. 



D xiii. 15, A ii. 15, C 3, 9, 8, 3, or 5, 1, 5, 6, 1, 5, P 18, V i. 5. 



The color is brown, with one or two obscure bluish dots on each posterior 

 scale of the sides. The operculum and preoperculum have a few more distinct 

 ones, and there is also a distinct black dot at the scapular angle of the 

 operculum. A large black spot, bordered anteriorly by bluish white, is on the 

 postericr rays of the dorsal. There is a black dot at the upper angle of the 

 base of the pectoral. The ventrals are purple; the caudal yellow towards 

 the base. 



One specimen is in the collection ; its length is nearly three and a half 

 inches. 



12. Glyphidodon coelestinus. This species does not appear to have 

 been previously found at Japan. Two specimens are in the collection of Dr. 

 Morrow. 



TheG. smaragdinus Brevoortf appears to be quite distinct from this species, 

 if the figure given in the Notes on Japanese Fish is correctly drawn. It is much 



*Corpusgracile, pinna dorsi longitudinalis, tota aculeata: Syst. Ich., Schneid., 

 p. 165, 1801. 



f Notes on some figures of Japanese Fi*h, p. 12, pi. vi. fig. 3 ; ibid, in Narra- 

 tive Expedition to Japan, vol. 2, p. 264, pi. vi. fig. 3. 



1859.] 



