APODAL FISHES OF AMERICA AND EUROPE. 
655 
Genus 37. — AVOCETTINA. 
Avocettina Jordan & Davis, gen. nov. (infants). 
Type : Nemichtliys infans Gunther. 
Etymology: From Avocetta, the a voce t or Becuryirostra. 
This genus is based on a species allied to Nemichtliys , but differing 
notably in the position of the vent. A second species, imperfectly 
known, is doubtfully assigned to the same group. 
ANALYSIS OF THE SPECIES OF AVOCETTINA. 
a. Eye rather large, contained 2 to 3 times in the distance between eye and pectoral; 
jaws long and filamentous, upper jaw 4 times the length of rest of head; both 
jaws covered with very fine recurved teeth ; pectoral fin about as long as the 
head is high; gill-openings a little less than eye ; postorbital part of head con- 
tained about 4 times in trunk ; dorsal beginning over pectorals, consisting of very 
delicate rays; trunk contained at least 12 times in tail; greatest depth of body 
about equal to head without snout. Color uniform black, jaws lighter. 
Infans, 106. 
aa. [Eye minute; upper jaws short, scarcely as long as rest of head; trunk longer 
than head ; tail with trunk § of whole length.] ( Vaillant ) Richardi, 107. 
106. AVOCETTINA INFANS. 
Nemichtliys in fans Gunther, Ann. and Mag. Nat. Hist., 24, 1878 (mid-Atlantic 2,500 
fathoms); Guuther, Voyage Challenger, xxii, 264, 1884 (mid-Atlantic 
2,500 fathoms ; off Pernambuco 500 fathoms ; Mona Channel, West Indies. 
814 fathoms). 
Labichthys gilli Bean, Proc. U. S. Nat. Mus., 45, 1890 (east of Prince of Wales Island, 
56° 20' N, 136° 20' W, depth 1,569 fathoms). 
Habitat : Deep waters of Atlantic and Pacific. 
Etymology: Latin, infans; immature. 
Our description is taken from a specimen collected by Dr. Gilbert on 
the west coast of Alaska. In Dr. Gilbert’s opinion, the species called 
gilli is identical with infans. 
107. AVOCETTINA RICHARDI. 
Nemichtliys inf ans Vaillant, Exp6d. Trav. et Talis., 95, pl.vii, fig. 1, la, 1888 (Azores). 
Nemiclithys richardi Vaillant, op. cit., Appendix, 93, 1888. 
Habitat : Deep water off the Azores. 
Etymology : Named for M. Bichard. ^ 
This species is known from the account given by Vaillant, based on 
an imperfect specimen. 
Genus 38.— LABICHTHYS. 
Labichthys Gill & Ryder, Proc. U. S. Nat. Mus., 261, 1883 ( carinatus ). 
Type : Labichthys carinatus Gill & Byder. 
Etymology : Aa/Stf, grip or hold, correlated with forceps ; i*dus, 
fish. 
