yo DireHor's Annual Report. 



Groove for the posterior processes of the intermaxillaries reaches to 

 a line with the anterior margin of the pupil. No spine on snout. 

 Teeth: Bands of villiform teeth on jaws, vomer and palatines. On 

 top of head just posterior of eyes about 8 raised lines form a fan- 

 shaped area on each side. Fins: The second dorsal spine is the 

 longest, equal to distance from base of anterior dorsal spine to base 

 of sixth dorsal spine. The first dorsal spine 2 into head, the last 

 2.50 into orbit. Third anal spine the longest, 1.33 into head. Soft 

 dorsal and pe6lorals of about equal length, i .66 into head. Ventrals 

 1.50 into head. Color in life: General color silvery, slightly darker 

 above, with a wash of purplish red and gold, the scales with a 

 splendid opalescent refie(5lion, each side with 10 very distinct dusky 

 lines which have a wash of pvirple madder. The lateral line, which 

 is slightly the widest, is a brighter red with less of dusky. Top of 

 head deep red. Spinous dorsal reddish with a big black splotch 

 between the 4 anterior spines. A row of triangular white spots be- 

 tween the spines near base, and a marginal line of white. Soft dorsal 

 yellow, with the two anterior rays red. Four outer rays on each 

 margin of caudal red, the inner part yellow. Anal yellow, the fourth 

 spine and first ray red. PeAorals pinkish. Belly and ventral fin 

 white. Twenty-five specimens. Length 2-7 inches. Guam, July, 

 1900. The young are similar in color, with the lines not quite so 

 distinct, and wdth two dusky blotches over each eye. Type speci- 

 men No. 73, B. P. B. M. Hab. Marianas. 



75-76. Holocentrus microstoma^ Gunth. 



Head 3.20 ; depth 3.50 ; eye 2.66 ; snout one-third less than 

 eye; maxillary equal to eye ; mandible 2 into head ; D. xi i 10; 

 A. IV 9; P. 16; V. I 8. Scales 3-54-8; 8 series of scales in front of 

 dorsal. Preopercles scaled. Opercle with a single vertical row of 8 

 scales which are deeply toothed posteriorly. Gill-rakers moderate, 

 12 including rudiments on lower limb. Hind margins of all the 

 opercles, preopercles, the post, sub and preorbitals strongly ser- 

 rated on their posterior or lower margins. Lower edge of pre- 

 opercle with a prominent spine, the free portion from the scales 

 measuring 2.20 into vertical limb of the preopercle, from lower 

 margin of spine. Two prominent opercvilar spines, the upper much 

 the largest. A prominent spine at the anterior end of preorbitals. 

 Mouth projecftile, lower mandible slightly the longest. Grooves 

 for the posterior proce.sses of the intermaxillaries ends anterior of a 

 line with front of pupil. The turbinal bones end in prominent pro- 

 cesses. Teeth villiform. Fins: Caudal well forked, with six small 

 spines at base of each margin. Third anal spine the longest, equal 

 to depth of the fish. Fourth and fifth dorsal spines the longest, 155 

 into head ; the first dorsal spine is about equal to ej^e, and the last 

 is equal to pupil. Pectorals 1.50 into head. Anterior rays of the 



3Speciinens from fUiani show that H. binolatuiii and //. niin ostoma are distinct species. 



