602 
BULLETIN OF THE BUREAU OF FISHERIES. 
Family Myriozoidte. 
Schizoporella unicornis (Johnston). [Chart 38.] 
Verrill and Smith, 1873, p. 713, 312, etc. 
( Escharella variabilis ); Verrill, 1875a, p. 41 
(Hippothoa reversa),n Osbum, 1912, p. 236. 
Buzzards Bay, Vineyard Sound, Nantucket 
Harbor, oS Gay Head.- — Verrill. Abundant 
and almost universally distributed in Vine- 
yard Sound; perhaps equally general in Buz- 
zards Bay. Dredged by the Survey in to 
19 fathoms, on every sort of bottom. Recorded, 
also, from shores and wharves, throughout the 
entire region. This species may either incrust 
stones, shells, etc., in flat sheets, gradually 
building up thick masses; or it may occasion- 
ally form wavy ridges, projecting freely from 
the stems of alga; and hydroids. Particularly 
beautiful specimens have been taken by us, 
growing on Tubularia couthouyi. 
Fish Hawk stations: 7523 (?), 7524 bis, 7525 bis, 
7526 (several masses on stem of dead hydroid), 
753 ° bis. 7 53 1 ( on Crepidula), 7532 (?), 7533 
bis (?), 7535. 75 3 6 (abundant), 7537 (on 
Thuiaria), 7538 (on Tubularia couthouyi), 7538 
bis, 7539 (many -layered mass), 7541 bis (?), 
7543 (on shell of Modiolus ), 7543 bis, 7546 bis, 
7549 bis, 7550 bis, 7551 (on Clidiophora), 7551 
bis (?), 7552 bis, 7553, 7554 bis (?), 7558 (on 
mussel shell), 7559 (on Eudendrium), 7560 
(common, pink or orange when fresh), 7562 
(on mussel shell), 7563 (?), 7564 (?) (many- 
layered mass), 7564 bis, 7565 bis, 7567 (?) 
(many-layered mass), 7572 (?) (few on alga), 
7577 (?) (on Mytilus shell), 7581 (on algae), 7586 
(?), 7587 (many pieces, attached to Chondrus 
crispus and other algae; pink and coral-like 
in appearance), 7588 (many pieces, attached 
to Chondrus crispus and other algae; pink and 
coral-like in appearance), 7593 (many pieces, 
pink and coral-like), 7594 (?), 7595 (many 
pieces, pink, coral-like form), 7596 (few), 7611, 
7612, 7615, 7618, 7619, 7622, 7625, 7626, 7627, 
7628, 7632, 7633, 7635, 7636, 7639, 7640, 7644, 
7645, 7646, 7648, 7655, 7656, 7659, 7660, 7664, 
7666, 7670, 7671, 7672, 7674, 7675, 7676, 7678, 
7679, 7680, 7682, 7686, 7688, 7689, 7690, 7692, 
7693, 7697, 7698, 7699, 7700, 7701, 7702, 7703, 
7704, 7706, 7707, 7708, 7717, 7722, 7724, 7727, 
773 °. 773 U 773 2 . 7738, 7739 . 774 °. 774 U 7742 , 
7743 . 7744 . 7745 , 7746, 7747 . 7749 . 775 U 7753 (?). 
Schizoporella unicornis — Continued. 
7755 . 7756 , 7757 . 775 s , 7759 . 77 6 °, 7763. 7764. 
7765, 7766, 7767, 7768, 7769, 7770, 7772, 7773, 
7774 . 7775 . 7776 , 7777, 7778, 7779, 7780, 7781, 
7782, 7783. Supplementary stations (1906): 
7525 , 7527 . 7537 . 7567, 7633, 7745 ! (i 9 ° 7 ): 
7521, 7526, 7530, 7538, 7543, 7549, 7551, 7581, 
77i8, 7731, 7739, 7761, 7763, 7766, 7770, 7775, 
7776, 7780, 7783; (1909): 7624, 7629, 7636, 7643, 
7645, 7648, 7653, 7659, 7660, 7668, 7670, 7671, 
7672. 
Phalarope and Blue Wing stations: 1, 2, 3, 5, 6, 
7, 15, 16, 20, 22, 24, 30, 32, 36, 37, 44, 45, 46, 
5i, 56, 57. 58, 60, 63, 64, 67, 68, 74, 76, 83, 85, 
87, 91, 96, 108, 109, hi, 113, 116, 117, 118, 
I 34 , 137 , 141, 144 , 15°, 152, 156, 160 (few), 163 
(abundant), 164 (common), 165 (few), 166 
(few), 167 (abundant). Supplementary sta- 
tions (1909): 79, 83, 165. 
Schizoporella biaperta (Michelin). [Chart 39.] 
Verrill, 1875a, p. 41 ( Hippothoa biaperta)', 
Osbum, 1912, p. 237. 
Vineyard Sound, abundant. — Verrill. Taken by 
the Survey at scattered stations throughout 
Vineyard Sound and Buzzards Bay; recorded 
also from Crab Ledge, Great Round Shoal, 
Muskeget Channel, No Mans Land (drift), and 
the Nantucket cable. Dredged in 3 to 15 
fathoms, on various bottoms, growing on shells 
and stones. 
Fish Hawk stations: 7533 bis, 7544 bis, 7562, 
7706, 7723, 7766, 7770, 7775, 7776. Supple- 
mentary stations (1909): 7624, 7629, 7643, 7645, 
7648, 7660, 7668, 7670, 7671, 7672. 
Phalarope and Blue Wing stations: 46, 163, 167. 
Supplementary stations (1909): 83, 131, 146. 
Schizoporella auriculata (Hassall). 
Osburn, 1912, p. 237. 
Crab Ledge, July 23, 1907, in 17 fathoms, and at 
Great Round Shoal fishing ground, on the same 
date, in 8 fathoms (both times in small num- 
bers); Crab Ledge, August 12, 1909, several 
colonies; Nantucket Shoals. 
Schizoporella sinuosa (Busk). 
Osburn, 1912, p. 238. 
Crab Ledge, August 12, 1909, numerous colonies 
on stones. 
0 Verrill described as a new species (1875, p. 41) a form of S. unicornis in which the position of the avicularum was reversed; 
i. e., pointing backward instead of forward. Dr. Osbum states that he has found colonies with the avicularia pointing in both 
directions and also exhibiting all sorts of intermediate positions. As no other distinguishing characters have been given, he 
regards reversa as a synonym of unicornis. 
