I1g FISHES OF SINALOA. 491 
Family DIODONTID/E. 
193. Diodon hystrix Linneus. PuErco Espino. 
Very common about rocky places, especially among 
the islands, where it was also found by Dr. Gilbert. All 
specimens taken belong to the typical Dzodon hystrix. 
Diodon holocanthus, if different, is unrepresented in our 
Mazatlan collections. 
Family MOLID/E. 
194. Mola mola (Linneus). .PEz Mota. 
Found in the open sea from San Francisco to Mazat- 
lan. It was seen at the latter locality by Dr. Gilbert, but 
not by us. 
Family SCORPAENIDZAE. 
195. Scorpena mystes Jordan & Starks, n. sp. Lapon. 
Plate li. 
Common in the Astillero, on the bottom. Very tena- 
cious of life, and much dreaded by the fishermen from 
the poisonous sting of its dorsal spines. 
Allied to Scorpena plumieri Bloch, which species it 
represents on the Pacific Coast. 
Head) 24; depth 3%; dorsal Xie 105; anal Til s); 
scales about 30; orbit 6% in head; maxillary 2; pec- 
toral 2; highest dorsal spine 3%; second anal spine 3; 
caudal 2. 
Body robust, not much compressed; interorbital space 
wide, not deeply concave, % wider than orbit; a pit be- 
tween preorbital and eye, and a broad depression behind 
coronal spines; membranous flaps on preorbital, edge of 
preopercle, over nostrils and above eyes; preocular, su- 
praocular, tympanic, coronal, occipital, nuchal and exoc- 
cipital spines present. Maxillary reaching to behind eye; 
lower jaw included; gill-rakers short and thick, about 
