Opisthobranchs from Laguna Beach 
The determinations are by Dr. F. M. MacFarland 
TECTIBRANCHS 
Pleurobranchea californica MacF. Only one specimen has been obtained at Laguna 
Beach, from a depth of from 15 to 20 fathoms. The specimen was mottled dark 
above and about 5 inches long. Dr. MacFarland informs me that this species 
is quite common in Monterey Bay and ranges much larger, almost up to 10 inches 
in length. 
Navanax inermis Cooper. Black, yellow lines, blue spots, yellow edges. About two 
inches in length. Another specimen possibly may be the same species, black with 
yellow spots. Apparently the same form occurs at Balboa. 
Aglaja (Doridium) purpureum Berg.? Brown, dredged 10 to 15 f. 
NUDIBRANCHS 
Triopha sp. Large, brown. Holdfast. 
Flabellina iodinea Cooper. Narrow blue body, red appendages. Swims by lateral 
movements of the body. This beautiful nudibranch was first found near Laguna 
by Miss M. Cate, not far from Dana’s point in 1916. In Jan. 15, 18, Mrs. May 
found a number near Laguna Beach. 
Dirona picta MacF. Light brown, long thick appendages. Holdfasts and tidepools 
common in 1915. 
Aegires sp. Knobs. Brick red, body clear. 
Chromodoris universitatis Cock. Blue, yellow spots. 
Polycera atra MacF. Red-brown, black stripes, brown spots. July 10, 1915. 
Facelina sp. Body clear, appendages dark. 
Ancula pacifica MacF.? Clear white, two yellow lilnes in front, one behind. Front 
appendages and two lateral tipped with yellow. 
Cadlina Sp.? Dark brown, flattened. 
Aeolidia sp. White to pink, appendages brown. W,. AC oEr: 
