FISHES FROM THE REVILLAGIGEDO ARCHIPELAGO. '283 



1 of eye. Preorbital lower than in M, dorsalis, its height 2f in head in adult ; 

 in M. dorsalis of same size the preorbital is 2\ in head. Teeth small, trun- 

 cate, movable, about as in M. dorsalis; lower jaw shorter; width of mouth 



2 in head; 4 or 5 rows of scales on cheek. Caudal peduncle short and deep, 

 length 2i in head, its depth 2 in head. Dorsal elevated but not falcate, 

 simply angular, its longest ray 1} in head; anal similar, its longest ray 1£ 

 in head ; caudal lunate, its lobes not produced, the upper longer, 1£ in head ; 

 pectoral 1£ in head; ventral 1£ in head. 



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

 narrow line on upper ray of pectoral and upper lobe of caudal: no spots. 



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

 nostril, fleshy hump at nape, in lower preorbital, and iu the uneven slope of 

 profile, as well as the absence of falcate tips 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 nonfalcate fins. The bright 

 orange markings seem to disappear with advanced age. 



One adult from San Benito Island; three adults from Socorro Island'. 



Family LABRID-SJ. 



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



islands. 



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



one from Guadalupe Island. 



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



from Todos Santos Bay. 



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



Clarion Island. 



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



Geronimo Island. 



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



Family MALACANTHIDiE. 



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



Family CIRRHITID^B. 



77. Cirrhites rivulatus Valenciennes. Four fine specimens from Clarion and 



Socorro islands. 



Family SCORP-ffiNIDiE. 



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



Santos Island. 



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



Bay. 



80. Sebastopsis xyris Jordan & Gilbert. Head 2f; depth 3£; D. xii-i, 10; A. 



iii,5; scales 48; maxillary in head If; eye 3£; pectoral about 1; longest 

 dorsal spine 2|; second anal spine If; ventral 1£; 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 fleshy flap nearly as long as pupil. Spines above 

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

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

 spines also well 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 spiue at its base ; two sharp spines below opercular 

 spine. Cheeks and opercle covered with ctenoid and imbricated scales 

 without flaps; body scales ctenoid and closely imbricated, without flaps. 



