576 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.05. 



hammer are wart-like and there are small protuberances on the dor- 

 sal and ventral surfaces regarded as rudimentary legs (?). The 

 neck has a length of 7-8 mm. and a diameter of 1-2.5 mm., the nar- 

 rowest portion being next to the hammer and the posterior portion 

 being much broader. The trunk or genital segment has the form of 

 a disk, almost semicircular, thickened along the midline and around 

 the margins, but sunken in the spaces between. The posterior mar- 

 gin is enlarged at the center into a prominent abdomen, completely- 

 fused with the trunk. The egg strings are 25-30 mm. long and 1-2 

 mm. in diameter ; the branched posterior processes are almost 10 mm. 

 long, and project beyond the lateral margins of the trunk on either 

 side. There is great variation in the size of the hammer as well as 

 in the processes and papillae which project from it. 



ReTnarhs. — By comparing this description with that previously 

 given for lumpi it will be seen that the protuberances on the hammer 

 are not to be interpreted as appendages of any sort, but simply as 

 irregularities in the growth of the hammer itself. During this 

 growth the appendages either disappear or become so small in com- 

 parison with their surroundings as to escape notice. Lumpi does 

 not seem to have any such processes, but the surface of the hammer 

 ramains smooth and quite hard. This fact, combined with a great 

 difference in the length of the neck and a smaller difference in the 

 shape and size of the genital segment, constitutes at present the 

 chief distinction between the two species. Until we can obtain 

 young females, which show the details of the several appendages, 

 and males to compare with those of lumpi, the two species can not 

 be fully differentiated. 



Genus REBELULA Poche. 



Lophoura Koixikeb, Zeit. fiir wiss. Zool., vol. 4, 1853, p. 299. — Coenalia, 



Attl del Soc. Italiana di sci. nat., vol. 9, 1865, p. 1, 

 Rebelula Poche, Zool. Anz., vol. 26, 1902, p. 17. 

 Hepatophihis Quidor, Archlv. Zool. Paris, ser. 5, vol. 10, 1912, p. xliil. 



External generic characters of female. — Cephalothorax cylindrical, 

 elongate, soft, and sometimes transversely wrinkled; neck narrower 

 that the cephalothorax, cylindrical, fully chitinized, and armed at 

 its anterior end with short chitin knobs, large swollen processes, or 

 profusely branched horns. Trunk or genital segment heart-shaped, 

 flattened dorsoventrally and produced posteriorly into a pair of 

 broad lateral lobes, with a much smaller pair inside of them at the 

 bases of the egg strings ; abdomen represented by a median unpaired 

 lobe fused with the trunk and projecting more or less. A pair of 

 posterior processes, covered with respiratory cylinders, attached to 

 the dorsolateral surface of the abdomen. Egg strings longer than 

 these processes ; eggs small and multiseriate. First antennae reduced 



