NO. 5 fraser: hydroids 191 



WLC, 7 to G of C, 7 to Mex, 1 to CA, and 2 to Pan only. Of those 

 which have extended southward, 10 reached Col, 30 to Ec, and 10 to 

 Peru. Of those that appeared in the oceanic areas, there are no inter- 

 mediate records for 5, 27 may have traveled either by way of the southern 

 route or by the northern route, 21 by the northern route only, and 3 by 

 the southern route only. 



A table. Table IV, shows very well the value of the recent collection, 

 since it gives the specific standing in each hydroid family in the Hancock 

 collection as it was in March, 1938, when the previous papers were 

 prepared, and as it is now. The third column gives the percentage in each 

 case. It is largely in the area between Point Conception and Cape San 

 Lucas, that the increase has taken place ; 54 percent of the species in the 

 Hancock collection as it is at present, has been obtained in the waters of? 

 Southern California, and 40 percent, of? the west coast of Lower Cali- 

 fornia. 



Families 

 Clavidae 

 Tubidendridae 

 Corynidae 

 Atractylidae 

 Eudendridae 

 Hydractinidae 

 Pennaridae 

 Cladocorynidae 

 Tubularidae 

 Bonneviellidae 

 Campanularidae 

 Campanulinidae 

 Halecidae 

 Hebellidae 

 LafoeJdae 

 Synthecidae 

 Sertularidae 

 Plumularidae 

 Total 



