FISHES PKOM THE REVILLAGIGEDO ARCHIPELAGO. '283 



i of eye, Proorbital lowor tliaii in .1/. dorsalin, its lieight 2J in head in adnlt; 

 in M. dorsalia of same si/o tlie i)roorbit:il i« 2i in liead. Tt'«th small, trun- 

 cate, movable, about as in M. doraaliii ; lower Jaw sliorter; width of mouth 

 2 in head; 4 oi- 5 rows of scales on cheek. Caudal jjeduncle short and deep, 

 h-n-^tli 2k in head, its depth 2 in head. Dorsal elevated but not falcate, 

 simply auf^ular, its lonjjest ray IJ iu head; anal similar, its longest ray H 

 in head; caudal lunate, its lobes not produced, the upp<a- longer, 1^, in iiead ; 

 ]»ectoral 11, in head; ventral 1^^ in head. 



Color uniform deep blue-black without paler margins to fins, except very 

 narrow lino on upper ray of ]tectoral and upper lobe of caudal; no sjjots. 



This species is well separated from M. dorsalis, diflering in the much larger 

 nostril, Ueshy hump at nape, in lower jireorbital, and in the uneven slope, of 

 ])rotile, as well as the absence of falcate tii)8 to fins. The very small speci- 

 mens which have been named Microspathodon bairdii seem to be the young of 

 this species, having the large nostril and the noufalcate fins. The bright 

 orange markings seem to disappear with advanced age. 



On© adult from San Benito Island ; three adults from Socorro Island. 



Family LABRIDi5E3. 



70. Harpe diplotaenia Gill. Thirteen large sjiecimens from Socorro and Clarion 



islands. 



71. Pimelometopon pulcher (Ayres). One specimen from Todos Santos Bay and 



one from (Juadalupe Island. 



72. Iridio semicinctus (Ayres). Several specimens taken at Cerros Island; one 



from Todos Santos Bay. 



73. Julidio notospilus (Glinther). A number of young, half an inch long, from 



Clarion Island. 



74. Oxyjulis californicus (Glinther). Specimens from Guadalupe Island and San 



Geronimo Island. 



75. Thalassoma grammaticum Gilbert. Clarion Island. Numerous specimens. 



Family MALACANTHIDJE3. 



76. Caulolatilus princeps (.Tenyns). Two specimens from San Martin Island. 



FamUy CIRRHITIDiB. 



77. Cirrhites rivulatus Valenciennes. Four fine specimens I'roni Clarion and 



Socorro islands. 



FamUy SCORP^NIDiE. 



78. Sebastodes flavidus (Ayres). One young specimen, 5 inches long, from Todos 



Santos Island. 



79. Sebastodes chrysomelas (Jordan & Gilbert). One specimen from Todos Santos 



I'.ay. 



80. Sebastopsis xyris .Jordan & Gilbert. Head 2^; depth 3i; D. xil-i, 10; A. 



111,5; scales 48; maxillary in head 1|; eye 3^; pectoral about 1; longest 

 dorsal spine 2j; second anal spine 1^; ventral lA; middle caudal ray 

 about 2. Body moderately elongate; head rather sharp; jaws equal; inter- 

 orbital space concave; top of head scaly and without occipital depression; 

 nasal spines sharp with a lleshy Hap nearly as long as pupil. Spines above 

 eye each with a similar tleshy flap. Preorbital, superorbital, postorbital, 

 and tympanic spines present, each sharp and high. Occipital and nuchal 

 spines also Avell developed; a small temporal spine; a small spine under the 

 eye on the sharp stay; a spine at end of stay in front of the preopercular 

 spine; the last has a small spine at its base; two sharp spines below opercular 

 spine. Cheeks and operclo covered with ctenoid and imbricated scales 

 without llajjs; body scales ctenoid and clo.sely imbricated, without Haps. 



