OPHIURANS OF THE PHILIPPINE AND ADJACENT WATERS. 47 



Albatross station 5630; south of Patiente Strait; Doworra Island 

 (N.) bearing N. 3° W., 8.34 kilometers (4.5 miles) distant (lat. 0° 56' 

 30" S., long. 128° 05' 00" E. ; 1,040 meters (569 fathoms) ; December 

 2. 1909; co. S., M. 



One specimen (Cat. No. 41133, U.S.N.M.). 



Notes. — These specimens are of rather small size ; the diameter of 

 the disk does not exceed 6 mm. in those from stations 5119 and 5630, 

 and is only 3 mm. in that from station 5601. But they show well the 

 characters of O. composita, and the outermost mouth papilla is 

 especially broadened; it is still larger than in the specimens col- 

 lected by the Siboga, and resembles that characteristic of the genus 

 Ophiolimna; it is almost rectangular and greatly elongated. I 

 show here the two surfaces of the specimen from station 5119, and 

 in figures 5 may be seen the dimensions of this outer mouth pa- 

 pilla, which in one of the mouth angles has a tendency to become di- 

 vided into two equal halves, and in another is almost completely 

 divided into two very unequal parts. This recalls a more marked 

 anomaly which I had previously noticed in a specimen from the 

 Gulf of Gascony, on which I thought it possible to base a new 

 species, which, however, I no longer recognize (see Kcehler '07, p. 

 290). 



I have determined the characters differentiating O. composite/, and 

 O. meridionalis Lyman which, like the first, has the mouth papilla 

 broadened (Kcehler 14, p. 94). H. L. Clark ('15, p. 201) has pro- 

 posed changing the name meridionals to mesembria, for he has 

 been able to show that the O. merklionalis of Lyman was in reality 

 an O. pentacrinus. 



The two specimens collected by the Ilirondelle in the North At- 

 lantic which I figured in 1898 under the name of O. pentagona, var. 

 armata ('98, p. 55) must also be assigned to O. mesembria. 



OPHIACANTHA CONFUSA Kcehler. 



Plate 19, figs. 1, 2. 



Ophiacantha confusa Kcehler ('05), p. 59, pi. 7, figs. 9-11. 



Locality. — Albatross Station 5420: between Cebu and Bohol; Cruz 

 Point (Bohol) bearing S. 20° E., 11.12 kilometers (6 miles) distant 

 (lat. 9° 49' 35" N.. long. 123° 45' 00" E.) ; 232 meters (127 fathoms) ; 

 March 24, 1909. 



One specimen (Cat, No. 41232, U.S.N.M.) 



Notes. — In spite of a rather remarkable difference in the form of 

 the adoral plates, I believe that this specimen must be referred to 

 the species which I described in 1905 from a unique and very small 

 specimen collected by the Siboga at the island of Salibabu at a depth 

 of only 36 meters (19.5 fathoms). The diameter of the disk of this 



