NO. 2051. VARIATIONS OF TRAMN0PHI8 0RDIN0IDE8— THOMPSON. 353 



tinct scale formulae for T. ordinoides. The reduced counts prevail 

 in specimens from the northern part of the range. These formulae 

 and the frequency of occurrence of the five types found on the 

 Sausalito Peninsula are as follows : 



Per cent. 



21-19-17 6 



19-21-19-17 66 



19-17 10 



19-17-15 12 



19-17-15-13 2 



17-19-17-15 



17-15 



15-17-15 



Bilaterally asjonmetrical 4 



SCALE FORMULA 21-19-17 (—V, —IV). 



SCALE FORMULA 19-21-19-17 (+ V, —V, —IV). 



This combination was found in 66 per cent of the specimens; of 

 these, 61 per cent were males and 39 per cent females. It may be 

 regarded as the normal count for this immediate region. 



U.S.N.M. 

 No. 



50254 

 50259 

 50263 



50266 

 50267 



50271 

 50272 



50276 

 50278 

 50296 



50312 

 50314 

 50306 



5 5 



Cont. 8 

 -VI 



8/ 8 



5 5 



6 6 

 4 5 



11/ 11 



12 16 

 7 6 



7 8 



ll 



13 13 

 5 4 



-1 



35 38 



24 26 



25 23 



32 36 

 Cont. 20 



23 23 

 22 24 

 35 34 

 28 29 



-vn 



24 /35 



34 



35 



28 31 



29 31 

 20 23 

 29 23 



28 25 



19 20 



25 23 



44 44 

 59 61 

 65 70 

 f-IVI 

 \53 53/ 

 69 71 



62 67 

 f-IVl 

 \59 58/ 



42 48 



58 59 



54 53 

 -IV 1 

 50 /60 



59 63 



63 64 

 61 67 

 57 55 



a 



36 



69 73 

 71 75 



65 70 

 56 66 



-IV\ 



66 /64 



91 85 



87 86 



{80 79/ 



95 93 



85 86 

 84 85 



-VI 

 85/ 87 

 89 91 



89 93 



87 

 87 91 



"94/ 



4/93 



34843°— Proc.N.M.vol.47— 14- 



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