170 



ONTOGENY AND SYSTEMATICS OF FISHES-AHLSTROM SYMPOSIUM 



Fig. 89. Larvae of Slomias and Chauliodus. (A) 5. alnventer. 4.6 mm, CalCOFI 7501 Sta. 97.60; (B) 5. atriventer, 10.0 mm, CalCOH 6604 

 Sta. 107.65; (C) 5. atmenler. 22.2 mm; CalCOH 6604 Sta. 107.65; (D) S. ferox. 30 mm, from Ege, (1918); (E) C. sham. 6.0 mm; from Mito 

 (1961a); (F) C macouni. 15.0 mm, CalCOH 6204 Sta. 60.60; (G) C. macouni. 45.2 mm, CalCOH 5707 Sta. 67.60. 



Astronesthidae, Stomiatidae, Chauliodontidae. Melanostomia- 

 tidae, Maiacosteidae, and Idiacanthidae, in the Superfamily Sto- 

 miatoidea. 



Eggs 



Eggs are known for Chauliodus, Stomias, and Tactostoma 

 and have in common a round shape, smooth chorion, and seg- 

 mented yolk, Chauliodus eggs have a wide perivitelline space 

 and lack an oil globule. Egg diameters are: C sloani. 2.2-2.5 



mm (Sanzo, 1931d); C. barbatus, 3.1-3.6 mm (Pertseva-Os- 

 troumova and Rass, 1973); C macouni. 2.7-3.1 mm, with an 

 initial yolk diameter of 1.3-1.5 mm (original data). Mito (196 la) 

 described an egg, referred to C. sloani. l.\l mm in diameter 

 with no oil globule but with a second membrane. Stomias eggs 

 have a second membrane, a single oil globule and the following 

 diameters: S. colubrinus. 1.3-1.5 mm, with inner membrane 

 1.05-1.1 mm (Pertseva-Ostroumova and Rass, 1973); S. atri- 

 venter. 0.88-0.92 mm, inner membrane diameter is 0.82-0.84 



