134 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 122 



Color pattern of preserved material. — There are several dif- 

 ferent types of color pattern found in this species. By and large, 

 these types are associated with geographic destribution, with no two 

 types occurring in the same area. All specimens except those 

 from Rarotonga, Tahiti, Makatea, and Raroia, are characterized by 

 having a dark humeral blotch on the body. The nature of this blotch 

 is more or less characteristic within a given geographic area. 



A tentative grouping of specimens on the the basis of similarity of 

 color pattern is as follows : 



1. Indian Ocean: A relatively large, dark humeral blotch is 

 present. The bands on the body are relatively well developed. In 

 the holotype of E. caudofasciatus, there appear to be pearly white 

 spots in irregvilar longitudinal rows. There is no dark spotting on 

 the body. There may be present indistinct or irregular dark or 

 dusky stripes or bands on the upper lip. 



2. Philippine Islands and the Palaus (pi. 26) : A relatively small 

 humeral blotch is present and there is usually present a much smaller 

 and paler secondary humeral mark separated by an immaculate area 

 immediately anterior to the main (largest) humeral blotch. The 

 bands on the body are relatively well developed. There are no white 

 spots on the body (although these might have been present in fresh 

 material), and dark spots, if present, are paler than the humeral blotch 

 and not easily distinguished. Such spots are restricted to the anterior 

 area of the sides. There are no stripes or bands on the upper lip. 



3. Waigeo, New Britain, New Georgia (pi. 27) : A relatively 

 small dark humeral blotch is present and there may be a secondary 

 mark similar to that described for the Philippine Islands and Palaus 

 specimens. Indications of banding may be present on the body 

 appearing usually as paired blotches along the midlength of the sides. 

 There are no white spots on the body, but there are numerous small 

 dark spots, several of which are equally as dark as the main humeral 

 blotch. There are no stripes or bands on the upper lip. 



TABLE 64. --Frequency distribution of number of supraorbital cirri of left eye 

 of specimens of Entomacrodus caudofasciatus (all populations combined) 

 arranged by SL classes (in mm) 



