252 



ONTOGENY AND SYSTEMATICS OF FISHES-AHLSTROM SYMPOSIUM 



Table 67. Characteristics of the Evermannellidae. In the list that follows only characters useful in distinguishing evermannellid taxa are 

 included. Those characters also included in phylogenetic analysis are numbered; presumed primitive states denoted by 0. presumed derivative 



states by integers. 



Coccorella 

 allantica 



Coccorella Everntannella Evermannelta Evermanneita Evermannella Odonloscomops 

 atrata ahblromi halbo tndtca megatops normatops 



Gross morphology 



(1) Eye (each state includes a suite of presumably cor- 

 related features listed in Johnson, 1982, p. 68): (0) 

 nontubular, (I) semitubular, (2) tubular 



(2) Pyloric caecum with cephalic extension: (0) absent, 

 (3) present 



(3) Luminous tissue, associated with ventral wall of 

 intestine and pyloric caecum; (0) absent, (4) pres- 

 ent 



(4) Medial snout-pad pore (Johnson, 1982, p. 8) is: (0) 

 present, (5) absent 



Meristic characters 



(5) Dorsal fin, modal number of rays; (0) 12 or 13, (6) 

 10 or II 



(6) Number of lateral line segments: 

 (0) S43, (7) £34,(8) SI8 

 —Anal fin rays 



— Vertebrae 



Morphometric characters (as thousandths of SL) 

 —Body depth at anal-fin origin 

 —Horizontal diameter of eye 



— Vertical diameter of eye 



— Interorbital width 



— Length of longest palatine tooth 



Osteological characters 



(7) Basisphenoid; (0) present, (9) absent 



(8) Ethmoid cartilage: (0) not forming orbital septum, 

 (10) considerably expanded posteriorly forming an 

 orbital septum 



(9) Supraorbitals; (0) present, (II) absent 



(10) Vertically elongate fossa centered at dentary sym- 

 physis; (0) absent, (12) present 



(11) Jaw and palatine teeth; (0) dentary teeth in two se- 

 ries, at least some dentary and palatine fangs 

 barbed, (13) dentary teeth uniserial, all fangs un- 

 barbed 



(12) Basihyal toothplate; (0) covers dorsal and dorsolat- 

 eral surface of basihyal, (14) covers only posterior 

 2/3 of dorsum of basihyal, (15) absent 



(13) Toothplate of fourth pharyngobranchial: (0) bears 

 teeth, ( 1 6) edentate 



(14) Toothplate of fifth ceratobranchial: (0) bears teeth, 



(17) edentate 



Developmental characters 



( 1 5) Number of peritoneal pigment sections; (0) three, 



(18) twelve or more 



(16) Juvenile phase pigmentation; (19) characterized by 

 development of three distinct rows of very large 

 melanophores, each row associated with one of 

 three main divisions of tail musculature, (0) juve- 

 nile phase pigmentation not as above, with many 

 more melanophores and no distinct trilateral pat- 

 tern 



13 



13 



12 



12 



12 



12 



18 



19 



19 



19 



19 



