602 



BULLETIN OF THE BUREAU OF FISHERIES. 



Family MYRIOZOID/E. 



Schizoporella unicornis (Johnston). [Chart 38.] 

 Verrill and Smith, 1873, p. 713, 312, etc. 

 (Escharella rariabilis); Verrill, 18753, p. 41 

 (Hippothoa reversa),a Osburn, 1912, p. 236. 

 Buzzards Bay, Vineyard Sound, Nantucket 

 Harbor, off Gay Head. Verrill. Abundant 

 and almost universally distributed in Vine- 

 yard Sound; perhaps equally general in Buz- 

 zards Bay. Dredged by the Survey in 1% 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 algae 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), 

 7530 bis, 7531 (on Crepidula), 7532 (?), 7533 

 bis (?), 7535. 753 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 algae), 

 7577 ( ? ) ( n Mytilus shell), 7581 (on algae), 7586 

 (?), 7587 (many pieces, attached to Chondrus 

 crisp us 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 1 . 773 2 . 7738, 7739. 7740, 7"4i, 7742, 

 7743. 7744. 7745. 7746, 7747, 7749, 7751, 7753 (?), 



Schizoporella unicornis Continued. 



7755. 775 6 . 7757. 775 8 . 7759. 77 6 . 7/63. 7764. 

 7765, 7766, 7767, 7768, 7769, 7770, 7772, 7773, 



7774, 7775- 777, 7777, 7778, 7779, 7780, 7781, 

 7782, 7783. Supplementary stations (1906): 



75 2 5. 75 2 7. 7537. 7567, 7 6 33. 7745; (i9 7): 

 7521, 7526, 7530, 7538, 7543, 7549, 7551, 7581, 



77 l8 , 773i. 7739. 776i, 7/63, 77 6 6, 777. 7775. 

 7776, 7780, 7783; (1909): 7624, 7629, 7636, 7643, 

 7645, 7648, 7653, 7659, 7660, 7668, 7670, 7671, 

 7672. 



Phalarope and Blue Wing stations: i, 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, in, 113, 116, 117, 118, 

 J 34, 137. MI. 144, 15. I 5 2 > I 5 6 > 1 60 (few), 163 

 (abundant), 164 (common), 165 (few), 166 

 (few), 167 (abundant). Supplementary sta- 

 tions (1909): 79, 83, 165. 



Schizoporella biaperta (Michelin). [Chart 39.] 



Verrill, 18753, p. 41 (Hippothoa biaperta); 

 Osburn, 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. 



o Verrill described as a new species (1875, p. 41) a form of 5. unicornis in which the position of the avicularum was reversed; 

 i. e. ( pointing backward instead of forward. Dr. Osburn 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 rc~crsa as a synonym of unicornis. 



