MONOGRAPH OF THE EXISTING CEINOIDS. 647 



In 1908 Dr. William H. Dall bestowed the name of StiUfer hathymetrw upon 

 the gasteropod figured in 1895 by Hartlaub, and Monterosato referred Bartsch's 

 Eulima ptilocnnicola to his new genus Sahinella. 



"VMiile studying the crinoids of the Copenhagen Museum I found upon a speci- 

 men of Capillaster jnuUiradiata from Singapore a parasitic gasteropod related to 

 the species occurring on PtUocrinus pinnafus; this Doctor Bartsch named in 1909 

 Eulima capillasfericola. 



In 1912 Professors Rene Kcehler and C. A'aney published an extensive memoir 

 upon the ectoparasitic gasteropods. treating in detail those parasitic upon the 

 echinoderms but adding no new information in regard to those occurring upon 

 the crinoids. In the same year I recorded the occurrence of a small species of 

 Eulima on Ileterometra reynaudii from Palk Strait, Ceylon, and at the same 

 time stated that I had found the same genus parasitic on Stenometra diadema in 

 southern Japan, the specimens being in the hands of Dr. William H. Dall for 

 description. 



On some specimens of Annametra occidentalis from Simon's Bay, Cape of 

 Good Hope, collected by the German South Polar Expedition, I found seven speci- 

 . mens of a new parasitic gastei'opod which were described in 1915 by Dr. J. Thiele 

 as Eulima capensis. At tlie same time he referred Bartsch's Eulima capillastericola 

 to Monterosato's genus Sahinella. 



In the same year Lieut. F. A. Potts noted that two or three very small gas- 

 teropods. apparently pa^rasitic, had been found by him on^coma-tulids at Torres 



Strait. .,:i,i,,„;!r, WM'C't •"dmO- 



STILIFER BATHYMETR.E DALL. . ■ 



Host. — Bathymetra, sp. 



Locality. — Vicinity of Alalpelo Island. Bay of Panama. 



Depth. — 1.772 fathoms. 



STILITER, SP. 



P. H. Carpenter says that Rhizocrinus lofotensis is often infested with two 

 or three small shells of StiUfer which bore comparatively large holes in its calyx. 



Carpenter's Rhizocnnus lofoteiisis included several distinct species, and it 

 is not certain to which form he referred; his note was, however, based at least 

 in part upon the following records: 



STILITER, SP. 



Host. — Bythocnmis, sp. 



Locality. — (Jff the Samboes and off Sand Key, Florida. 



Depth.— 2Ti. 248, and 306 fathoms. 



Remarks. — Among numerous specimens oi Bythocrinus^ sp., from these locali- 

 ties Pourtalet found one with throe small Stilifers adhering to the outside of 

 the calyx, and others with small round holes in the calyx, probablj' bored by 

 these gasteropods. ~. 



142140— 21— Bull. 82 4.0 



