DISCUSSION OF SPECIES AND THEIR DISTRIBUTION. 231 



III. Teeth absent. 



A. Head large, unarmed. Prooporcnlum with a double edge. 



1. Anal with 1 spine Brephostoma 



PARASCOMBROPS, Alcock. 



Parascombrops, Alcock, Journal Asiatic Society of Bengal, LViii, ii, 1889, 297. 



Chilodipteritls with body elevated aud a wide, oblique mouth. Preoperculum with a 

 double border, the outer border recurved at its angle and strongly serrated at this point, 

 as well as along its horizontal limb; the inner border with 3 small spines at its angle. 

 Operculum arched, with 2 weak spines, and with a membranaceous extension of its angle. 

 Teeth villiform in jaws (in front), vomer, and palatines; 2 small canines in upper jaw, and 

 several large teeth in lower one. Tongue smooth. First dorsal with 9 spines, anal with 

 2. Scales large, excessively deciduous (28 in lateral line in type species). Pseudobranchiae 

 present. Branch iostegals vii. 



A single species, P. pelluculus, Alcock (toe. cit.), from the Bay of Bengal, 98 to 1 02 fathoms, 

 and fi-om near the Deir mouth of the Mahanadi Delta, in 65 to 68 fathoms. Dr. Alcock says 

 that its facies is "decidedly bathybial." 



GLOSSAMIA, Gill. 



Glossamia, Gill, Proc. Acad. Nat. Sci, Phila., 1863, 82. 



Chilodipterids with body somewhat elevated and an oblique month. Preoperculum 

 with a double, unserrated ridge. Operculum armed. Teeth uniform, villiform, on the jaws 

 palatines aud vomer. Tongue smooth. First dorsal with C or 7 spines; anal with 2 spines 

 aud 7 to 9 rays. Scales small, deciduous, 40 or more in lateral line. No pseudobranchise. 

 Branchiostegals 7. 



The type is Apo{ion aprion, Richardson (Ann. Nat. Hist., 1842, ix, IG; Apogonichthys 

 aprion, GUnther, Cat., i, 247). 



GLOSSAMIA PANDIONIS, Goode and Bean. (Figure 231). 



Apogon pandionis, Goode aud Beax, Proc. U. S. Nat. Mus., iv, 1881, 160. — Jordan and Gilbert, Bull, xvi, 



U. S. Nat. Mus., 564. 



Body oblong, rather vobust, its greatest width (behind the gills) being equal to half the 

 length of the head, aud contained six times in the length of the body without caudal; its 

 greatest height contained about thrice and two-thirds in the body length. Least height of 

 tail almost equal to half the greatest height of the body. Scales small, cycloid, 45 in the 

 lateral line; 3 longitudinal rows above and 9 below the lateral line; lateral line complete. 



Length of the head one third of the standard length of the body, its greatest width 

 equal to greatest width of body. Length of the snout 4.} times in length of head. Maxilla 

 extends to a point a very little behind the anterior margin of the pupil, the mandible to the 

 vertical from the middle of the eye. Length of maxilla equal to long diameter of the eye. 

 Preoperculum apparently unarmed. Operculum with two flexible points near its upper 

 angle. Gill-rakers long and slender. 



Eye nearly circular, its longest diameter nearly equals half the length of the head and is 

 contained 7 times in the standard body length, nearly horizontal. Width of interorbital 

 space equals two-thirds the diameter of the eye. Mouth oblique, the lower jaw projecting. 

 Dentition in jaws hardly perceptible. Feeble teeth on the head of the vomer and on the 

 palatine bones. 



Distance of dorsal from snout equal to twice the greatest width of the body ; its longest 

 spine (fourth) equal in length to three-fourths of the diameter of tlie eye. Distance from 

 origin of first dorsal to origin of second dorsal equal to twice the length of the base of the 

 latter. Distance of anal from snout equal to twice the length of the head ; the length of its 

 base is equal to two-thirds the length of the eye; of its longest ray to the length of the 

 maxilla. First aual spine minute, its length equal to one-fourth of the least height of tail; 



