636 



ONTOGENY AND SYSTEMATICS OF FISHES-AHLSTROM SYMPOSIUM 



Aspasma minima 

 (double disc) 



CO 



.8mm 



; V 6.9mm 



Lepadichthvs frenatus 

 (single disc) 



7.3mm 



larvae. Detailed studies with the larval (or embryonic) forms of 

 the above mentioned groups should be fruitful in leading, I 

 believe, to a clearer understanding of their relationships. 



Future investigation into gobiesociform systematics should 

 first concentrate on whether the current gobiesociformes rep- 

 resents a monophyletic grouping. Only when this question is 

 answered satisfactorily can the higher order relationships be 

 addressed. 



Department of Biology, California State University, 



NORTHRIDGE, NORTHRIDGE, CALIFORNIA 91330. 



8.3mm 



9. 1 mm 



8.2mm 



¥\ 10. Or 



10.0mm 



Fig. 339. Development sequences of the pelvic suction disc in larval 

 gobiesocids (double and single types). 



