72 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.53. 



Doctor Jungersen very kindly presented the author with a fine 

 specimen of his species, Sarcotretes scopeli, which has been of great 

 service for comparison. 



SARCOTRETES ERISTALIFORMIS (Brian). 



Lernaeenicus cristaliformis Beian, Cop^podes prirasite.s des Poissons et des 

 iSchiiiides proveuant des oampagnes scientifiques de S. A. S. le Prince 

 Albert I" de Monaco, 1912, p. 20, pi. 4, figs. 1 and 2 ; pi. 9 and 10. 



Host and record of speciinens. — A single female was obtained from 

 Gastrostomus hairdii by the Bureau of Fisheries steamer Albatross 

 at station 2206, off the coast of New Jersey, in August, 1884. It has 

 been given Cat. No. 8349, U.S.N.M. 



Remarks. — This specimen is somewhat injured but not enough to 

 affect its identification. It agrees in every particular with the two 

 large specimens so fully and excellently described by Brian. And 

 it was even obtained from the same host, a rare deep-sea Eu- 

 pharyngid, but from a different locality. It exceeds Brian's speci- 

 mens somewhat in size, the trunk measuring 33 mm. in length and 

 the neck and cephalothorax 25 mm.; this latter portion of the body 

 has shriveled somewhat in the preservative and was probably a few 

 millimeters longer when taken from the fish. 



SARCOTRETES LOBATUS, new species. 



Plate 8, figs. 71-79. 



Host and record of specimens. — Two specimens ^^•ere obtained from 

 Benthosema (Scopelus) muUeri in slightly different localities, one 

 by the Fisheries steamer Fish Hawk in 1882 at station 1140 off 

 Marthas Vineyard, the other by the Fisheries steamer Albatross in 

 1883 at station 2001 off Block Island. The former has been given 

 Cat. No. 6123, U.S.N.M., and is made the type of the species, the 

 latter was cleared in clove oil for the internal anatomy. 



External specific characters of female. — Cephalothorax short, cyl- 

 lindrical, and strongly inflated, covered dorsally with a well-de- 

 fined carapace, and sending out on either side a large cushionlike 

 process or horn, which curves posteriorly and ends in a sharp point ; 

 combined width of head and horns much greater than the length. 

 Neck behind the horns considerably inflated and showing the re- 

 mains of the two anterior terga and sterna, then narrowing gradually 

 with a thickening and increasing chitinization of the skin, and form- 

 ing a narrow stalk just in front of the trunk, where it is bent ven- 

 trally at a right angle. Trunk thickening rapidly beyond the bend, 

 cylindrical, the same diameter throughout and abruptly truncated 

 at the posterior end. Abdomen a small spherical knob on a level 

 with the dorsal surface and inclined dorsally; neither specimen car- 

 ried Qgg strings and so they are unknown. 



