THE SILVERSIDES OF THE GENUS MENIDIA. 254 
Menidia peninsulee (Goode & Bean). 
Chirostoma peninsulz Goode & Bean, Proceedings of U. S. National Museum 1879, 148. 
Menidia peninsulx, Jordan & Gilbert, Proceedings of U.S. National Museum 1882, 266, and Synopsis, 
407, 1883; Jordan & Evermann, Fishes of North and Middle America, 797, 1896. 
This is the most common silverside of Florida and the Gulf States; found, so far as 
now known, only in salt water. From the different localities they differ consider- 
ably in appearance, according to their environment. On clear, sandy beaches they 
are very light colored; in weedy places, often thickly punctate with black, giving 
them a dusky appearance. In the original description specimens from Lake Monroe 
were included with M. peninsulz. They are found to differ in some respects, and 
are presented in this paper under another head. M. peninsulz attains the largest size 
of the species with short anal fins. We have specimens from both coasts of Florida 
and from Louisiana, Mississippi, and Texas. 
This species most clearly resembles M. beryllina, from which it differs chiefly in 
the longer snout, which equals eye; the base of the anal mostly shorter than the head, 
never longer, and its larger adult size. Color, as in M. beryllina; from some locali- 
ties darker than the typical Potomac River fish. Total length 3.50 inches; head 4.20 
in length without tail; depth 5.50 in same; eye 3 in head; snout 3+ in same; D. v-i, 8; 
A. 1,16; scales 39-8. From one of the type specimens. Color, light greenish; edges 
of scales with dark dots; lips and top of head dusky; a dusky streak along base of anal. 

mMenidia peninswx (Goode & Bean). Figure from a specimen from Titusville, Fla. 
Specimens from Pensacola (type and cotypes) range in measurements as follows: 
Total length 2.5 to 3.75 inches; head 4 to 4.3; depth 4.5 to 5.5; eye 3+ to 3.16; 
snout 3+ to 3.16; D. rv to v1, i, 8 to 10; A. i, 15 to 17; scales 38 to 43-8 to 9. 
From Wechawatchee River, Hernando County: Total length 2.75 to 3.25 inches; 
head 4 to 4+; depth 5 to 5.5; eye 3 to 3+; snout 3 to 3+; D. 1v tov, i, 8 or 9, mostly 
Iv-i, 8; scales 39 to 41. 
From Tarpon Springs, Florida: Total length 2.12 to 2.87 inches; head 3.4 to 3.75; 
depth 4.66 to 5.25; eye 2.6 to 3; snout 3.2 to 3.4; D. rv to v1, i, 8 to10, mostly v—i, 9; 
A. i, 14 to 16, mostly i, 16; scales 38 to 40. 
From Anclote Sponge Kraals, Florida: Total length 2.25 to 2.62; head 3.5 to 4; 
depth 4.75 to 5.25; eye 2.6 to 3; snout 3 to 3.25; D. v to vi-i, 9, mostly v-i, 9; A. i, 14 
to 16, mostly 15; scales 38 to 41. 
From Titusville: Total length 1.25 to 3.25; head 4 to 4.25; depth 4.75 to 5, mostly 
5; eye 2.75 to 3, mostly 3; snout 3 to 3.25, mostly 3; D. 1v to vr-i, 9 to 10, mostly 
y-i, 9; A. i, 15 to 17, mostly 16; scales 37 to 39. 
From Grand Plains Bayou, Mississippi: Total length 2 to 3.75 inches; head 4 to 
4.5; depth 5.25 to 6; eye 2.6 to 3; snout 3 to 3.5; D. 1v to v-i, 9 to 10; A. i, 16 to 17, 
mostly i, 17; scales 37 to 41. 
F. C. 1901—17 
