43 FISHES OF SINALOA. 415: 
56. Tylosurus stolzmanni (Steindachner). SIeERRITA. 
Occasionally taken in the harbor of Mazatlan, Where 
specimens, the types of 7y/osuwrus sterrita, were taken by 
Dr. Gilbert. One largé specimen obtained by us. Its 
‘measurements differ somewhat from those given in the 
type of 7ylosurus sterrita. The distance between the eyes 
is 834 in head. The maxillary reaches beyond the ver- 
tical from front of pupil. The eye is 3 in postorbital part 
Ofibead.+, Lead mot,quite 2-in-length. 1D. 1.15; -Acj1or7- 
Pectorals with dusky specks, but not notably black at tip. 
This fish is probably identical with 7y/osurus stolzmannt, 
described by Steindachner from Tumbez, Peru. The 
snout in our specimen, as in the type of szevrzéa, is shorter 
than in 7ylosurus stolzmannt, 
Family HEMIRAMPHID. 
57. Hyporhamphus roberti (Cuvier & Valenciennes). 
PAJARITO. 
Exceedingly common about Mazatlan, swimming in 
schools in open water, especially numerous in the bay; 
those of the same age and size go together. Schools of 
adults and schools of half grown specimens will be found, 
each moving about independently of the other. It is highly 
valued as a food fish, although distinctly inferior to Sav- 
dinella stolifera. 
Lower jaw, measured from tip of upper, two times 
length of rest of head. Snout, 2% in head. 
This species is found along the whole Pacific Coast of 
tropical America, and ‘from Cape Cod to the mouth of the 
Rio Grande, being everywhere common southward. We 
have seen no specimens from the West Indies. 
The type of Hemirhamphus roberti Cuvier & Valen- 
ciennes, came from Cayenne, coll. Poiteau. Through 
the kindness of our friend, Dr. F. Bocourt, of the Mu- 
