98 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.53. 



First and second antennae in the same position and similar in 

 structure to those of cyclopterina; maxilLie and proboscis also similar 

 in position and structure; swimming legs entirely concealed by the 

 cauliflower processes so that it would be necessary to remove the 

 latter in order to ascertain their exact number and arrangement. 



Color (preserved material), a uniform brownish yellow except the 

 head and anterior thorax and their processes which are white. 



Total length, 16.50 mm. Head and anterior thorax, 2 mm. long, 

 1.50 mm. wide. 



Genital segment, 6 mm. long, 2.33 mm. wide. Egg coils, C mm. 

 long, 1.50 mm. wide. 



{enodis, destitute of Imobs or processes.) 



Hemarks. — This species is so radically different from the others in 

 the genus that it can be readily recognized by its general form with- 

 out the details of the appendages. The absence of all knobs and 

 processes on the trunk, the almost complete suppression of the sig- 

 moid curve, and the profusion of cauliflower processes on the head 

 and anterior thorax are the distinguishing characters. The size 

 is also more in accord with the miniature host on which it lives. 



HAEMOBAPHES DICERAUS, new species. 

 Plates 19 and 20, figs, 14S to 155. 



nost and record of specimens. — Two females with Qgg strings were 

 taken from the gill arches of Chaeturichthys sciistius at Hakodate, 

 Japan. The more perfect of the two is made the type of the new 

 species, with Cat. No. 49703, U.S.N.M. The other becomes a para- 

 type, with Cat. No. 49735, U.S.N.M. They were taken from sepa- 

 rate fish, and each was fastened in the fish's throat at the base of 

 the gill arches and had bored through the intervening tissues and 

 buried its head inside the bulbus arteriosus. 



Speci-fiG characters of female. — Head and all of the thorax in- 

 closed within the bulbus arteriosus very soft and easily torn or 

 crushed; cephalothorax with a single pair of lateral cushion proc- 

 esses, each of which is bifid; the anterior branch is on a level with 

 the dorsal surface of the head, is short, cylindrical, bluntly rounded 

 at the tip, and pointed directly forward parallel with the axis of 

 the head; the posterior branch is enlarged into a circular cushion, 

 evenly rounded and sliglitly flattened dorso-ventrally, and extends 

 diagonally downward and backward to the ventral surface. 



The second, third, and fourth thorax segments are distinctly dif- 

 ferentiated; the second and third segments the same width as the 

 head without the lateral horrs, the fourth segment a little narrower; 

 all three segments perfectly smooth, without knobs or processes. 

 Neck a little more than half the width of the fourth segment, be- 

 coming rapidly chitinized, and armed with a single pair of short 



