Prof. Agassiz on Viviparous Fishes from California. 389 
sal black, mottled with white; caudal blackish, lighter upon the 
base; anal deep black, with a light longitudinal band; pectorals 
white ; ventrals black with light base. 
From the above description, it must be obvious that this is the 
species first observed by Mr. A. C. Jackson, to whom I have in- 
scribed it, or at least a species very closely allied to it. There is 
only one fact about it which surprises me, that while he observed 
mature young in it on the 7th of June, Mr. T. G. Cary should 
have found it still with young as late as the beginning of Au- 
gust. Again Mr. Jackson saw nineteen young in it, whilst in the 
specimens forwarded by Mr. Cary, I found only eight or nine 
young, which were transversely banded like Emb. Caryi. May 
2. Embiotoca Caryi, Agass. 
The body is much more elongated than in Embiotoca Jacksoni 
yet equally compressed. Its height, including that of the dorsal 
fin, is less than the distance from the end of the snout to the ex- 
tremity of the pectoral; and less than one-half the length of the 
fish. The profile is much less steep, and the snout quite as promi- 
nent, hence the head is longer than high. The posterior border of 
the orbit is nearer the angle of the opercle than the end of the 
snout. ‘The upper and lower curves of the body are equal, and 
approach more nearly towards the tail, making this latter narrower 
than in the first species. ‘I'he scales of the back do not descend 
upon the head lower than one-half the distance from the first 
spine of the dorsal to the end of the snout. The forehead is 
slightly concave as in Emb, Jacksoni. The posterior end of the 
intermaxillary does not extend as far back as the anterior border 
of the orbit. ‘The nature of the lips, and extent of the upper max- 
illary is much as in the other species, but the anterior edge of 
border of the orbit.’ A vertical line through the orbit shows the 
height of the head in this region to be one-third less than in E. 
Jacksoni. ‘The opening of the mouth is directed more obliquely 
