Table 15. Percentage composition of the dominant fauna based on numbers of 

 animals comprising 80 percent or more of the total station fauna 

 for all stations for the May 1975 and 1980 sampling periods. 



Species 



1975 1980 



1975 1980 



1975 1980 



NEMERTINEA 



Unidentified spp. 

 NEMATODA 



Unijentified spp. 

 ANNELIDA 



POLYCHAETA 



Anaandla maculata 

 Dispio uncinata 

 Magelona riojai 

 Nephtys picta 

 Paraonis fulgens 

 Scolelepis squamata 

 Spio pettiboneae 

 Spiophanes bcmbyx 

 MOLLHSCA 

 BIVALVIA 



Cuna dalll 

 Donax texasianus 

 ARTHROPODA 

 CRUSTACEA 

 ISOPODA 



Chlridotea excavata 

 AMPHIPODA 



Acanthohaustorius sp. 

 Paxahaustorius n. sp. 

 Protohaustorius n. sp. 

 PseudohaustoTius n. sp. 

 Pseudoplatyischnopus n. spp. 

 MACRURA 



Callianassa sp, 

 BRACHYURA 



Dissodactylus mellitae 

 Pinnotheridae sp. (juv.) 

 ECHINODEEMATA 

 ECHINOIDEA 



Mellita quinqaiesperforata 



57.30 90.22 



26.80 

 20.53 



2.61 



3.96 



4.50 



10.09 



6.15 

 42.41 



3.27 

 2.92 



12.36 

 2.97 



18.69 

 3.13 



23.35 8.29 



3.14 

 38.20 8.03 



9.12 12.61 

 5.32 



7.45 9.28 



25.19 

 6.24 



3.78 

 2.61 



3.26 

 3.15 



7.09 

 17.89 



3.26 

 3.15 



28.12 

 4.16 

 3.60 



Total 



No. of species 



95.59 90.22 

 2 1 



3.85 82.78 

 1 5 



83.25 81.43 

 3 12 



83.71 80.05 

 3 8 



81.87 80.65 

 7 12 



38 



