26 FOSSIL FISHES OF LOMPOC 



Family SERRANID^. 



Emmachaere Jordan and Gilbert. 



(Type: EMMACH^RE RHACHITES Jordan and Gilbert.) 



Allied to STEREOLEPIS Ayres, but with stronger dorsal spines. Body 

 robust, the depth about equal to length of head, nearly three times in 

 length to base of caudal ; caudal region tapering rather rapidly. Mouth 

 large, the lower jaw projecting, the teeth bluntish, in broad bands, no 

 serrations or spines on head as far as known. Vertebrae 24, strong, about 

 as deep as long, strongly grooved; spinal bones, strong and with inter- 

 neurals dagger-shaped (dilated at base). Dorsal rays X, I, 16, the fin 

 deeply notched, the spines very strong, the median longest, 2*/2 in head ; 

 soft dorsal with its base about equal to that of the spinous part, its 

 base nearly horizontal, the rays about as long as the spines. Anal III, 

 8 or 9, the second spine strongest, but not longer than third. Caudal 

 broad, subtruncate, with large hypurals and no median split. Ventrals I, 

 5 inserted just before pectorals ; pectoral broad and rounded, unsymmet- 

 rical. The broken specimen on which this genus was based ( 1919) is now 

 supplemented by two large examples. 



11. Emmachaere rhachites Jordan and Gilbert. 

 (Plates XV, XVI) 



Our best example (No. 220) is \9y 2 inches long; complete except 

 for the crushed head. Head 3% in length ; depth about the same ; form 

 robust, tapering posteriorly. Vertebrae 94-15 = 24, rather strong, about 

 as deep as long, somewhat constricted, with a strong double groove on the 

 lower side of each ; neurals and hsemals strong, even ; interneurals of 

 spinous dorsal almost as long as neurals, dagger-shaped, one between each 

 pair of neurals, dilated at base, those of soft dorsal much smaller, also 

 shorter, mostly two between each pair of neurals; interhaemals strong, 

 the anterior very long, dagger-shaped, the second somewhat enlarged, one 

 between each pair of haemals ; ribs small. 



Lower jaw strong, apparently projecting, 2% in head, with moderate 

 rather broad bands of teeth preserved; sides of head with imprints of 

 rather large scales. Dorsal fin continuous, deeply notched, the first of 

 10 strong spines, the median longest, about 2y 2 in head. Soft dorsal with 

 its base scarcely longer than that of the spinous part, with a slender spine 

 and 15 or 16 soft rays, its base nearly horizontal, the rays about as long 

 as the spines. Anal inserted slightly behind soft dorsal, its three spines 

 strong, the second strongest, about as long as third. Spines graduated, 

 the rays about III, 8 or 9 ; base of anal somewhat shorter than that of 



