246 



BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY, 



are discharged through ducts situated beneath the lateral margins of 

 body. 



Habitat. — Kukak Bay, Alaska Peninsula (Coe, :01). Mr. Abbott 

 informs me that specimens of the same species have been sent him 

 from Kadiak Island, Alaska. 



57. Amphiporus cruentatus Verrill. 



Proc. U. S. Nat. Mus., 2, p. 184, 1879. Trans. Conn. Acad., 8, p. 

 399, PI. 33, figs. 7, 8 ; PI. 35, fig. 3, 1892. 



Amphijwrus cruentatus Coe, Harriman Alaska Expedition, 11, p. 

 154, PI. 20, figs. 1-6, 1904. 



PI. 1, fig. 13 ; Text-figs. 12, 20, 51, 52. 



This species which has previously been found only in New Eng- 

 land is fairly common among 

 various growths on the rocks 

 of the breakwater at San Pe- 

 dro, California. A number of 

 specimens were also obtained 

 from piles at Monterey, Cali- 

 fornia, in 1901. 



Body small, soft, rather slen- 

 der, usually 10-25 mm. in 

 length, of a pale yellow, bright 

 vellow, or sometimes flesh- 

 color, and having very con- 

 spicuous vessels with deep red 

 blood, the color of which re- 

 , , . sides in the large discoid cor- 



FiG. 51. — Amphixioms ^ 



cruentatus. Outline puscles. Head slender, with 



of head, showing com. i^COnspicUOUS oblique fuiTOWS 

 parative size and posi- ^ ^ _ 



tion of ocelli. placed far back from tip (Text- 



fig. 51). 

 Ocelli usually five to ten on each lateral margin of head (PI. 1, 

 fig. 13; Text-figs. 20, 51), usually well separated, irregular in size 

 and position ; anterior ocellus on each side distinctly the largest and 

 situated more superficially. 



Fig. 52. — Amphipo- 

 rus cruentatus. 

 Outlines of cen- 

 tral stylets and 

 bases showing va- 

 riation in size and 

 form in different 

 individuals. 



