710 Bulletin 47, United States National Museum. 



hh. Eye 4 in postorbital part of head; dorsal rays 16; anal 19. 



ANGUSTICEl'S, 1055. 



gg. Eye moderate, 2 to 3% times in postorbital part of head. 



f. Caudal fin forked; caudal keel sharp, broad, and conspicuous; top of head 

 flat, striated, without median groove; base of upper jaw much depressed; 

 maxillary entirely hidden by preorbital; teeth very small; ventral fin 

 midway between eye and caudal; scales not very small. D. 1, 13; A. 



1, 18. ARDEOLA, 105G. 



il. Caudal fin unequally lunate, the emargination not deep, the lower rays mod- 

 erately produced; scales very small; sides with a silvery lateral stripe; 

 caudal keel not very conspicuous, not black; top of head with median 

 groove; maxillary not entirely concealed by preorbital; ventral inserted 

 midway between preopercle and base of caudal. Species of moderate 

 size, with the scales and bones more or less green. 

 j. Body very slender, the depth f>% to 7 in length of head; caudal keel 



not very small. 



k. Posterior half of pectorals more cr less abruptly black; eye large, 



2> in postorbital part of head. I). 1, 16; A. 1, 17; lateral 



ilne 250. SIERRTTA, 1057. 



kk. Posterior half of pectorals pale, like the base of the fin ; eye rather 



small, 2% in postorbital part of head. D. 1, 15; A. 1, 17; 



lateral line 370. EXILIS, 1058. 



jj. Body moderately slender, the depth 5% in length of head ; caudal keel 



little developed. 



I. Eye moderate, 2% in postorbital part of head; pectorals not black 



posteriorly. D. 1, 15; A. 1, 17; lateral line 300; a dark bar on 



opercle. MARINUS, 1059. 



tf. Eye small, 3% in postorbital part of head. D. 13 or 14; A. 15 or 16; 



pectoral pale. ALMEIDA, 1060. 



ff. Dorsal and anal fins long, each of 17 to 25 rays, the last rays of the dorsal fin more 

 or less elevated in the young, becoming lower in the adult; caudal keel rather 

 strong, black; one or more folds of skin across the edge of the preopercle; caudal 

 fin deeply emarginate or unequally forked. Ventrals inserted midway between 

 base of caudal and middle of eye. Species of large size, with the scales and 

 bones green; no distinct lateral stripe. 

 !. Beak short and very strong, its length 1% to 1| times length of rest of head; 



body comparatively robust, the depth more than J length of head. 



. Dorsal fin of moderate length, its rays 1, 19; anal rays 1, 17; insertion of 



dorsal notably behind that of anal; snout very short, 1% times length 



of rest of head; lateral line 440. roniATOR, 1061. 



JIH. Dorsal fin long, its rays 1, 21 to 1, 24; anal rays 1, 22 to 1, 24; insertion of 



dorsal almost opposite that of anal; snout longer, 1% to 1 length of 



rest of head; lateral line about 350. RAPHIDOMA, 1062. 



mm. Allied to T. raphidoma, but insufficiently characterized. GALEATUS, 1063^ 



mm. Beak strong, but more elongate, its length about twice length of rest of 



head; dorsal beginning behind front of anal. 



o. Greatest depth of body equal to length of pectoral; teeth shorter and 



weaker than in T. acus. D. 21 to 22; A. 19 or 20; a grayish lateral 



streak. PACIFICUS, 1064. 



oo. Greatest depth of body about % length of pectoral. D. 1, 23; A. 1, 21; 



lateral line 380; no lateral stripe. ACUS, 1065. 



aa. Mouth not closing completely, the upper jaw arched at base; lobes of dorsal and anal low, 

 the last rays elevated; eye very large, 2^ in head; scales small, green. D. 24; A. 22; 

 a bluish lateral band. CARIBB.'EUS, 1066. 



1049. TYLOSURUS NOTATUS (Poey). 



(NEEDLE-FISH; LONG-JAWS.) 



Head 2; depth 5. D. 13; A. 13;* scales large, 85 before dorsal, 150 

 in lateral line. Body robust, not compressed ; tail posteriorly not 



* Counting developed rays only. 



