98 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxiii. 



RHYNCHOBOTHRIUM SPECIOSUM Linton. 



Plate V, figs. 32-35. 



Rynchoborhun. upeciosaiii Linton, Proc. U.S. Nat. Mus., XIX, p. 801-805, \A. lxiv, 

 figs. 13, 14; pi. Lxv, figs. 1-7; Bull. U. S. Fish Com. for 1898, p. 784; same 

 for 1899, p. 413, etc.; Bull. Bureau of Fisheries, XXIV, p. 332, etc. 



This species was found in live of the Bermuda fishes. It is highly 

 probable that the adult stage will l)e found iu the cub shark. 



NOTES ON HABITATS. 



EpinepJielns mac idat us. 



July 8, one, from cj^t on viscera; cyst thin. 3'ellowish, on account of 

 the presence of a waxy secretion, length 20 mm.; blastocyst translu- 

 cent bluish-white, about same length as cyst; larva with triangular 

 head, and neck enlarging posteriorlv and slightly swollen at the bulbs. 

 A specimen mounted in balsam and slightl}^ compressed yielded the 

 following measurements in millimeters: Length of bothria 0.75, 

 breadth 0.62; length of head and neck 4.5; diameter of neck, anterior 

 0.1^6, middle 0.67, at bulbs 0.80; proboscis, length 2.2, diameter near 

 base, excluding hooks 0.054, including hooks 0.078. 

 Eplnephehifi striatus. 



July 11, several long-ciavate cysts on viscera with yellowish- brown 

 secretion. Two larvte measiu'ed 12 and 20 mm., respectiveh^ 



July 27, live, cysts on viscera and mesenter}', mostly clavate. Length 

 of one cvst 25 mm., of the larva 15 mm. August 8, two cysts. 



3fycf<roperc(( a pun. 



July 21 and 22, several clavate cysts from 20 to 25 nmi. in length 

 on viscera Avith dark-brown secretions. 

 Neomsen is griseits. 



July 27, six cj^sts on viscera. 

 Neomae.nis synagrin. 



July 18, one clavate cyst, length 2<» nun., diameter 5 mm. 



RHYNCHOBOTHRIUM SPIRACORNUTUM, new species. 

 Plate \, figs. 36-38. 



Type.-C^t. No. 5797, U.S.N.M. 



Head usually broader than long, orbicular or cordate ; both ria lateral — 

 that is, coinciding with the lateral margins of tlie body, with raised 

 borders — neck long, slender, nearly linear, enlarging at base, some- 

 times appearing to ))egin al)ruptly by an articulation with the head 

 and usually abruptly larger than the anterior end of the body; pro- 

 boscides much shorter than neck, with a tendenc}" to coil up into 

 rather close spirals when everted; sheaths nearly straight, bulbs long- 

 ovate, retractor muscle attached to posterior end. The hooks are of 



