The Crixoids from Dr. S. Bock's Expeditiox to Japan Ii)l-I. I2it 



Sp. IS (Sh 21) All ihe proximal itinniilrs present. (Ii(iii,<i;li I*., and 

 P;j especially are \-ery small and iiicomplclely calcified. Disk swollen. 

 No orals. 



The specimens fi-om ShimonoseUi (St. 1) obvionsly differ from 

 the other ones by having more cirri; they arc also a little larger and 

 coarser than the rest of tiie specimens. 



It is interesting to observe the great variability in the number 

 of pinnulars and relative lengths of the proximal ])innules. 



Toxometra A. H. Clakk. 

 T. aequipinna n. t^p. 



Fig. lU— IK), Photo 11. 

 From St. 4: 2 specimens. 



S^). 1 (St. 4) Cd almost discoidal, free dorsal pole + 1 mm. — 

 C. XXVIII 10 — 11, 5 — 6,5 mm. in a double whoi-]. P*^ segment 

 L = '/2 br, 2'' one L about = br, 8'^ and the following ones L = V/s — 

 1 '/2 X the median br. No dorsal spine. Antepenultimate segment L= 

 br. Opposing spine h = ' s of the br of the segment. Terminal claw 

 curved, a little longer than the penultimate segment. 



R — s narrow bands (the distal borders concave), almost con- 

 cealed by Cd. I Br— s 1 laterally free, h = '/5 br, with a small late- 

 ral tubercle and a strong, median, longitudinal crista which continues 

 on the proximal ^'.-s of the axillary. This ossicle is hexangulai-, h of 

 the middle line ^/a of the br. The distal margin c(»ncave. The proxi- 

 mal and distal edges strongly bent outwards. Arms X, (if) mm. Br — s 

 1 inside basally contiguous in pairs. Br 1 and 2 with a median tu- 

 bercle similar to the crista on the I Br series, but more slightly de- 

 \eloped tiian this. After Br 9 oblique joints. All the distal edges of 

 the segments strongly bent outvards, a little proximally directed and 

 finely spinous. This condition most pronounced on the proximal seg- 

 ments. The distal Br — s long (L = l'/2 — 2 br) somewhat hour-glass- 

 shaped. Ex. of syzygies: 3+4, 0+ 10, 14 + 15, 19 + 20 etc. with an 

 interval of usually 3 oblique articulations. 



Nova Acta licg. See. Sc. Up.s.. Ser. 4. Vol. r.. N:.. C. Imi.r. •' ■< 1922. 17 



