632 BULLETIN 82, UNITED STATES NATIONAL MUSEUM. 



"crabs" (probably galatheids), with 10 cream-colored bands on the carapace, 

 a cream-colored median band on the abdomen, several yellow spots on the ventral 

 side, and the chelipeds and walking legs with yellow distal ends. 



PnOBI.EMATICAL DECAPOD. 



Dr. F. A. Bather stated that a decapod has been found in the anal tube of a 

 crinoid. He probably referred to the suctorial crustacean (see p. 640) recorded by 

 W. B. Carpenter. 



ISOPODA. 



Family CYMOTHOID^. 



ANILOCRA, SP. 

 PI. 57. fig. 1346. 



In 1882 Prof. William A. Haswell mentioned as a commensal of comatulids 

 in the Albany passage, near Cape York, Queensland, an undescribed species of 

 cymothoid, which was usually ensconced in the alimentary canal of the host, in 

 which it remained buried with the exception of the anterior third of its body. 



Miers did not refer to this form in the Alert report. 



P. H. Carpenter stated in 1884 that he frequently found in the anal tube of 

 Comatula rotalaria and of C. solan's from Cape York an isopod of the genus 

 Anilocra which was nearly half an inch long. In 1888 he recorded another 

 specimen of the same species from an example of Zygometra microdiscus dredged 

 by the Challenger in 8 fathoms of water in Torres Strait. He inferred that 

 either as an egg or as a larva it must have been caught in one of the ciliary currents 

 converging on the mouth from the arms and thus have been carried through 

 the digestive tube to the rectum, where it remained. 



Beddard did not mention this species in his account of the isopods collected 

 by the Challenger, and I can not find any further references to it in the literature 

 on the group. 



W. B. Carpenter described a similar case of commensalism (or parasitism) 

 in Antedon Mftda but did not state the group to which the crustacean belonged 

 (see p. 640) . 



Family CIROLANID^. 



CIROLANA LINEATA POTTS. 

 Pig. 946, p. 621. 



This species occurs on comatulids, generally on Comanthus annulafus, and 

 was described from specimens collected by Lieutenant Potts himself in Torres 

 Strait. 



Potts writes that this species is far from being as sedentary as Synalpheus, 

 which, while very energetic at times, rests for long periods on the disk of the 

 crinoid. While the isopod may make busy excursions on the surface of the 



