.JOURNAL OF ENTOMOLOGY AND ZOOLOGY 243 



among the rootlikc holdfasts of the Macrocystis at a depth of four 

 to six fathoms. Moreoxer T. iiKir'nia is not reported as occurring 

 farther south than Pacific Grove. There seems to be some reason 

 for considering this a new species, but further investigation, and 

 perhaps a study of comparati\e material, will be necessary to 

 determine its systematic position. 



CALYPTOBLASTEA 

 Family SERTULARIIDiE 



SerUilarcUa tricuspid at a (Alder) 



Sertidaria fur cat a (Trask) 



Both of the above forms were found on the washed-up holdfasts 

 of Macrocystis. 



Family PLUMULARIIDiE 



Aglaophenia inconspictia (Torrey '02) 

 Torrey's description gives "hycirocladia 3-4 mm. long." Out of 

 a large number examined, however, I found none with hydrocladia 

 more than 1.5 mm. 



Ac/laoplienia strutliiouidcs (Murray) 

 Both A. inconspicua and A. strut/iioiiidcs were taken from the 

 red algce brought In by the tides. 



Pluniularia sctacca (Ellis) 

 This form appears to have a wide variation In its bathymetric 

 distribution. Specimens were collected from the mussels which 

 are uncovered at mid-tide, and from the carapace of LoxorJiyjiclius 

 grandis, a deep-sea crab that Is only rarely brought to shore by the 

 highest tides. 



Plum III aria lagoiifcra (Allman) 

 Found on kelp holdfasts. 



AutcucUa avalonia (Torrey) 

 Taken In tow-net from floating red algae. 



