96 



BULLETIN 60, UNITED STATES NATIONAL MUSEUM. 



This species has been well described and fig-ured b}^ Mr, Coker from 

 specimens taken at Beaufort, North Carolina. I have found it on the 

 gills of an undetermined crab taken in Lake Worth Inlet, Florida. 

 One of these is drawn in fig. 32 c. It is apparentl}' restricted to shallow 

 water crabs, as O. geryonophila is to those of deep water. 



OCTOLASMIS FORRESTI (Stebbing). 



1904. Trkhelaspis forrestl Stebbing, Annals and Mag. of Nat. Hist., 6th ser., 

 XIII, p. 444, pi. XV, May, 1894. 



1905. Dichdaspis forresti Stebbing, Gruvel, Monographie des Cirrhipedes, p. 132. 



Locality. — Sunnnerland Key, Florida, in the gill cavity of Palhiui'us 

 argus, H. A. Pilsbry, March, 19oT. (See %. 32r7.) 



No more definite locality than ''West Indies" has hitherto been 

 given for this species. Its host lives in quite shallow water, 2 or 3 feet. 

 (Fig. 326?.) 



Fig. 33. — Octolasmis americanum. a, h, c, Oarinal, ba.sal, and lateral view.s ok the type; 



(/. LATERAL VIEW OF AN OLD INDIVIDUAL. X 4. 



Subgenus DICHELASPIS Darwin. 

 OCTOLASMIS AMERICANUM, new species. 



Type.— Odt. No. 32892, U.S.N.M. 



Type-locality. — Albatross Station 2041, between Cape May and Nan- 

 tucket Island, north latitude 39° 23', west longitude 68° 25', in 1,608 

 fathoms, globigerina ooze, with No. 9067. 



Othe7' localities. — No. 11860, Alhativss Station 2709, between Cape 

 Breton and Nantucket, north latitude 40° 07', west longitude 67° Si', 

 in 866 fathoms. 



The capitulum is semicordate, about twice as long as wide, the occlu- 

 dent margin straight, carinal margin very convex, especially near 

 the base. 



The scutum consists of two straight branches at right angles, an 

 occludent and a lateral portion. The lateral branch does not much 



