436 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
spots varies so greatly on those that possess them, there are no grounds on which the specimens with 
spotted pectorals can be separated from those without spots. Hence the synonymy given below. 
Eight specimens were collected at Honolulu in 1889 (field Nos. 166, 167, 168, 191, 192, 193, 194, 
and 196), and 6 specimens were collected by Jordan & Snyder at Honolulu in 1900 (field Nos. 03, 04, 
05, 07, 08, and 09), and 1 specimen (field No. 2943) is in Dr. Wood’s collection. These specimens are 
12 to 13 inches in length. Large numbers are caught about Honolulu and brought to the market. 
Measurements of nine examples of Qypsilurus sirnus. 
Pectoral unspotted. 
Pectoral spotted. 
No.' No. 
No. 
No. 
No. 
No. 
No. 
No. 
No. 
167. ; 08. 
196. 
168. 
193. 
05. 
194. 
192. 
191. 
Length 
250 i 270 
215 
208 
261 
254 
247 
245 
242 
Depth 
do 
19 ! 19 
18 
19 
19 
18 
19 
19 
18 
Head 
do 
24 i 23 
24 
25 
23 
23 
24 
23 
23 
Snout 
do 
6 7 
61 
6 
7 
61 
7 
7 
7 
Eye 
do 
81 8 
81 
9 
81 
8 
8 
8 
Interorbital 
do.... 
9 1 8 
8 
8 
9 
8 
9 
9 
81 
Eye to ventral 
do 
46 : 48 
45 
47 
47 
45 
45 
46 
47 
Ventral to last vertebra 
do 
41 1 43 
40 
86 
44 
44 
43 
40 
40 
Length of pectoral 
do 
70 68 
65 
65 
72 
70 
64 
69 
67 
Length of ventral 
do — 
25 1 28 
26 
27 
29 
29 
28 
29 
31 
Dorsal ravs 
13 12 
14 
13 
13 
13 
12 
13 
12 
Anal rays 
7 , 8 
9 
8 
8 
9 
8 
8 
7 
Scales before dorsal 
32 ! 31 
28 
31 
30 
30 
30 
30 
30 
Scales between dorsal and lateral line 
8 1 8 
8 
7 
8 
8 
8 
8 
8 
Caudal peduncle 
8 1 81 
81 
8 
8 
8£ 
81 
9 
8 
Exoccetus sirnus Cuvier & Valenciennes, Hist. Nat. Poiss.. xix, 105, 1846, Sandwich Islands. 
Exoccetus pmilopterus Cuvier & Valenciennes, Hist. Nat. Poiss., xix, 112, pi. 561, 1846, New Holland; Gunther, Cat., vi. 
291, 1866; Bleeker, Atlas Ichthy., vi, 74, pi. 251, fig. 5, 1872. 
Exoccetus alatus Solander, in Cuvier & Valenciennes, Hist. Nat. Poiss., xix, 112, 1846, Otahiti. 
? Exoccetus spilopterus Cuvier & Valenciennes, Hist. Nat. Poiss., xix, 113, 1846, Caroline Islands; Gunther, Cat,, vi, 292, 1866; 
Bleeker, Atlas Ichthy., vi, 74, pi. 250, fig. 2, 1872. 
Exoccetus neglectus Bleeker, Esp. Exoc. Ned. Tydsch. Dierk., in, 112, 1865; Bleeker, Atlas Ichthy., vi, 71, pi, 247, fig. 2, 1872 
(Sumatra, Batjan); Steindachner, Denks. Ak. Wiss. Wien, lxx, 1900, 512 (Hawaiian Islands). 
? Exoccetus callopterus Gunther, Cat., vi, p. 292, 1866, Panama. 
42. Cypsilurus bahiensis (Ranzani). 
One specimen of this fish was obtained by me in 1889, 15 inches in length (field No. 195), and one 
by Dr. Wood (field No. 12043) 13.5 inches; and one by Jordan & Snyder (field No. 04). 
Exoccetus bahiensis Ranzani, Nov. Comm. Ac. Sci. Inst. Bonon., v, 1842, 362, pi. 38, Bahia; Bleeker, Atlas Ichthy., vi, 71, pi. 
249, fig. 2, under the name E. spilonopterus; Jordan & Evermann, Fishes North and Mid. Amer., i, 739, 1896; 
Steindachner, Denks. Ak. Wiss. Wien, lxx, 1900, 512 (Honolulu). 
Exoccetus vermiculatus Poev, Memorias, ii. 300, Cuba. 
Exoccetus spilonopterus, Bleeker, Nederl. Tydsch. Dierk., in, 113, 1865 (Sumatra). 
43. Cypsilurus atrisignis Jenkins, new species. 
Head 4.3 in length; depth 5.5; D. 15; A. 10; P. 14; lateral line about 60; scales before the dorsal 
fin 34; scales between origin of dorsal and lateral line 9; body elongate, broad dorsally, narrowing 
ventrally, broadest just in front of base of pectorals, where it is nearly as broad as the depth; top of 
posterior portion of head broad, narrowing toward tip of snout, somewhat concave between the eyes; 
interorbital space equaling distance from posterior margin of eye to margin of opercle; eye large, its 
center anterior to center of head; snout less than eye, somewhat pointed, lower jaw slightly projecting; 
maxillary included and falling considerably short of anterior margin of eye; pectoral reaching tip of 
last dorsal ray; ventral reaching to one-third the base of the anal; its origin halfway between eye 
and base of caudal; origin of dorsal much in advance of vent, its distance from first caudal ray 1.4 
times head, the longest ray, the anterior one, about .5 the head; lower lobe of caudal the longer. 
Color in alcohol, dark purple above, light below; dorsal fin with black spot about 0.7 the diameter 
of eye between eighth and eleventh spines; caudal and ventrals colorless, unmarked; ventrals white, 
without spots; pectoral rays and membranes very dark purple above, the rays light below, the mem- 
branes with black spots on anterior and posterior portions. 
One specimen (field No. 197) 13.5 inches in length, was taken by me in 1889 at Honolulu,. Tvpe, 
No. 50713, U. S. N. M, 
