20 



PROCEEDINGS OF THE NATIONAL MUSEUM 



Table 1. — Counts and measurements of Oligopus longhursti 



Table 2. — Summary of measurements on O. diagrammus /rom three geographical 

 locahties (given as percent of standard length; average in parenthesis followed hv 

 range) ^ 



Measurement 



Range in standard length (mm.) 



Depth at dorsal origin 



Predorsal 



Preanal 



Head length 



Snout 



Orbit 



Upper jaw 



Maxillary width 



Head width 



Galapagos-N=2i 



23.6 

 29.5 

 44.1 

 26.6 

 5.9 

 5.0 

 13.8 

 4.35 

 14.9 



91,54 



(21.4, 25.9) 



(28.6, 30.4) 



(43.9, 44.4) 



(25.5. 27.8) 



(5.4, 6.5) 



(4.4, 5.6) 



(14.7. 13.0) 



(4.3, 4.4) 



(13.4, 16.5) 



Guadalupe-N = 13 



24.5 

 29.1 

 47.3 

 26.0 

 5.2 

 4.3 

 13.2 

 4.4 

 14.2 



74. 7-184 



2 (21.3-32.1) 



(26. 3-30. 9) 



(46.3-51.3) 



(25. 1-27. 2) 



(4. 6-6. 2) 



(3.8-1.7) 

 (12.5-13.8) 



(3.9-4.7) 

 (12.0-17.7) 



Peninsular Baja 



Calif. -N =8 



23.1 

 29.4 

 46.3 

 26.9 

 5.7 

 4.8 

 13.7 

 4.5 

 13.3 



34.5-81.0 

 (20. 9-25. 2) 

 (26.3-31.9) 

 (43.8-48.1) 

 (25. 3-27. 8) 

 (4.^-6.6) 

 (4.7-6.1) 

 (12.8-14.4) 

 3 (4. 0-5. 0) 

 (11.1-17.3) 



* M- '^ number in parenthesis is holotype, second is paratype. 

 »N=5.' 



