10 FOSSIL FISHES OF LOMPOC 



the head finely striated and enameled. The vertebrae are about 45, a char- 

 acter which separates the genus from the modern forms with sharp 

 ventral scutes. We find no trace of dorsal scutes nor of finlets ; the slen- 

 der ribs are about as long as head and nearly four in length to base of 

 caudal. Intermuscular bones are very evident : the ribs are forked below, 

 and the ventral spinules are well marked. 



We give the record of the most perfect examples found above the 

 horizon in which the multitudes occur. 



No. 110 is about six inches long, the back abruptly broken and the 

 head crushed ; ribs 4^2 in length of body. Vertebras 43 ; 24 behind in- 

 sertion of ventrals. These are nearly under middle of dorsal, as usual in 

 this group. 



No. 116. Eight inches long; is well preserved: mouth large, the 

 lower jaw projecting; ventrals just behind front of dorsal; vertebrae 43; 

 23 caudal vertebras ; depth of body 5 in length. 



24. Broken in three parts, the head much crushed. 



27. Fair. 



36. Two specimens with ECLIPES VETERNUS. Tail and posterior 

 dorsal rays. 



39. Backbone. 



51. Fairly good imprint. 



123. Fair. 



126. Two in bad order. 



153. Bad condition. 



157B. In fair shape; no head nor fins. 



203. Fragments of four fishes. 



243. Fair condition. 



288. Two damaged skeletons. 



3. Xyne fitgeri Jordan and Gilbert, new species. 



(Plates IV, V) 



Besides XYNE GREX, a second species of herring occurs in these 

 deposits. This we may provisionally refer to the same genus. It is deeper 

 in body, with the head much heavier, the form much less symmetrical. 

 The vertebras are 45 in number, rather heavier than in XYNE GREX, and 

 the anterior vertebrae seem loosely connected, becoming readily crushed 

 out of place, or as in the type example bowed into an arch. The ribs 

 are longer than in XYNE GREX, nearly as long as head, about 3^4 in length 

 of body. 



The form of the head and the tendency to curvature of the back- 

 bone, with the less symmetrical form of the body, may indicate generic 

 distinction for this species, but it is certainly a near relative of XYNE. 



