CIRRIPEDIA FROM THE PACIFIC COAST OF NORTH AMERICA. 201 



Balanus, sp. undet. 



Two very large barnacles wen- taken at Albatross station 4209, Admiralty Inlet near Port Townsend. 

 Wash., on rocky, coarse sand and shell bottom in 25 fathoms. I have been unable to identify them 

 with any described form. Inn since they are much worn externally and riddled byboring sponges, study 

 of them is deferred until better preserved material comes to hand. The cup is remarkable for the 

 deeply concave pocket-like base and the bd tli interior walls of the parietes. 



Balanus gdandula Darwin. 



Balanaa glandula Darwin, Monog. Balanidtt, !>. 265. 



Quarantine station. Port Townsend. Wash., on Purpura cris/iatu. Albatross station -121!). Admiralty 

 Inlet in the same vicinity in about 1*» fathoms, on broken gastropod shell-. Other Alaskan localities 

 are Sitka and I'nalaska. collector Dr. Benjamin Sharp, in collections of Academy of Natural Sciences of 

 Philadelphia. Specimens were also taken at Nanaimo Bay, on shore, by Prof. H. Heath. This is a 

 common Alaskan barnacle. 



Balanus Bp. 



Albatross station 4457. off Point Pines Light-House, 16 fathoms, on a gorgonian. [mmature. 



Balanus sp. 



Albatross station 4561, Santa Cruz Light-House, 15 fathoms. Immature specimens on waterlogged 



twigs, caught in the tangles. 



Balanus flos, n. sp. 

 [PI. ,v. fig. I 7.] 



A species of Darwin's Bection C, somewhal related to B.spongicola Brown. Base and parietes 



porous, radii solid. 



The wall is high, stoop, and tubular, with somewhat square base and aperture, pink outside and 

 within. The parietes usually have a few rather strong ribs, but may be nearly smooth. The radii 

 are smooth, with strongly senate edges, and slope very steeply fr the apices. The alee are smooth, 



very narrow, with smooth edges. The apices of the plates project as strung teeth around the aperture 

 and are more or less recurved, giving it a corolla-like appearance, the aperture being nearly as large as 

 the base. The inner submargins of the ahe are sculptured with slender thread-like transverse raised 

 lines especially developed in the carina and carino-lateral plates. Below the sheath the inner surfaces 

 of the parietes are while and are longitudinally grooved, as usual. The base is rather thin, bul porous. 

 The opercular plates are white. 



The scutum (pi. ix, fig. 3. 6, 7) is triangular, with strongly recurved apex and low sculpture of liat- 

 tened, unequal wrinkles parallel to the basal margin. There are no noticeable radial lines, though an 

 extremely indistinct and line striation is discernible under a strong lens. Internally (fig. 6) there is a 



small, low articular ridge and a small adductor ridg cupying the median third of the valve's length 



and not confluent with the articular ridge. The muscles an' inserted so superficially as to leave no 

 pits, the inner faces of the valves being remarkably flat. The narrow occludent margin is marked 

 with very oblique sulci. 



The tergum (pi. ix, tig. 1, 5i is not beaked apically. Veryfaim Longitudinal striae may be traced 

 along the carina! margin, but elsewhere the plate is sculptured with low, wide-spaced growth marks. 

 There is no furrow running to the spur, but the growth lines are deeply sinuated where ii should be. The 

 spur is short and rather wide. Inside there is a strong, elevated, and acute articular ridge, no noticeable 

 articular furrow, and the ridge running to the spur is very low. Crests for the attachment of depressor 

 muscles are very small. The scutal margin of the tergum is evenly concave. 



Length of the wall at base 12 mm., breadth 11.5 mm., height hi mm. Length of the aperture 

 from apex of the carina to apex of the rostrum. 10 mm. 



