416 CALIFORNIA ACADEMY OF SCIENCES. 44 
seum at Paris, we have received a drawing of this speci- 
men. In the drawing the lower jaw, from tip of upper, 
is 134 times length of head. The head, with lower jaw, 
is 1° times in length from tip ef upper jaw to base of 
caudal. The ventral is midway between front of eye and 
base of caudal. The name rvodert7 belongs, therefore, to 
the common long-jawed form; the short-jawed West In- 
dian form being //yporhamphus untfasciatus. 
Family SYNGNATHID/E. 
58. Siphostoma starksii Jordan & Culver, n. sp. CuL- 
EVRA DEGRIOg gidlate coxx. 
Common in the Rio Presidio in sluggish water, on the 
bottom, about a mile below the village of Presidio. The 
species is probably found in brackish and fresh waters 
rather than in the sea. ; 
Head 10%; depth 21; dorsal: 38,-0n.:0--1o or: 11 
rings. Rings 13 or 14-++37 or 38. . Head and .body in 
tail 2.. Snout 23 in head. Dorsal half longer than head. 
Body rather stout. Head scarcely carinate above. 
Snout with a slight smooth carina. Two lateral keels, 
confluent into one behind. 
Belly slightly keeled: no keel on opercle. 
Color, dark olive, much mottled with darker but with- 
out distinct markings; yellow below. 
Male and female common in the fresh waters of Rio 
Presidio among alge; not seen in salt or brackish water. 
The pouch of the male teeming with eggs in January. 
Length 4 to 6 inches. 
Type, No. 2686, L. S. Jr. Univ. Mus. 
59. Siphostoma arctum Jenkins & Evermann. 
Two specimens taken in the Astillero at Mazatlan, both 
males, the egg-pouch filled with eggs. Length 4 inches. 
Previously known only from Guaymas. This species re- 
. 
