14 POMACENTRIDiE. 



spines. All the fins, except the pectorals, are very dark. The 

 second dorsal spine is as long as the head, and about twice as long 

 as the last. (Gill.) 



Sandwich Islands. 



Evidently closely allied to D. tnmaculatm. 



5. Dascyllus marginatus. 



Pomacentnis marginatus, Riipp. Atl. Fische, p. 38. taf. 8. fig. 2. 

 Dascylhis uiargiuatus, Ctw. i^ Val. v. p. 439. pi. 133. fig. 2 ; Lefebrre, 

 Voy. Abyss, vi. p. 231 ; Gu^r.-Menev. Iconogr. iii. pi. 19. fig. 6. 



D. if. A. ^. L. lat. 25. L. transv. 3/12. 



Head and thorax grey ; back and tail yellowish, with a bluish 

 streak on each scale ; tail with a blue superior and inferior margin ; 

 dorsal and anal fins with black margins; ventrals black; caudal 

 transparent. 



Ked Sea. 



a, h. Adult. Red Sea. From Dr. RiippeU's Collection. 



c. Adult. Red Sea. From the Berlin Museum. 



d. Adult : not good state. 



6. Dascyllus xanthosoma. 



Dascyllus xanthosoma, Bleeh. Banda, i. p. 247. 



marginatus, var., Steindachner, VerhatuU. Zool. Bot. Gesellsch. 



Wien, 1861, p. 77. 



D. if. A. ^. L. lat. 25. 



Yellow, with a brown band from the back to the pectoral fin ; 

 each scale with a smaU blue streak ; ventrals black ; anal brownish ; 

 the other fins greenish, sometimes with a darker margin. 



East Indian Archipelago. 



a. Borneo. Purchased of Mr. Frank. 

 h. Bleached. From the Haslar Collection. 



Heliases reticulatus (Richards. Ichth. Chin. p. 254) is described as 

 follows : — 



D. i|. A. :i. L. lat. 25. L. transv. 11-12. 



" The profile, leaving out part of the tail, is nearly orbicular. 

 Teeth in one row, short, subulate, acute, with very minute ones 

 behind, scarcely perceptible even through a lens. Narrow prteorbital 

 scaly, and, when examined by a lens, seen to be minutely toothed, 

 as is also the vertical limb of the praeoperculum, a few teeth at the 

 corner of this bone being larger. Caudal slightly notched at the end. 

 After long maceration in spiiits, the ground-colour is milk-white, 

 with a well-defined pale-yellowish-brown border to each scale, pro- 

 ducing a network with acutely elliptical meshes." 



China Seas. 



