192 THE SCHIZOPODA. 



Length of the male 12 mm., of a female with marsupium 13 mm. 



Remarks. — This small species is allied to B. rtiicrops G. 0. Sars, but differs 

 especially in having the process at the end of the eye-stalks very much larger 

 and the longer lateral spines on the telson much shorter than in the last-named 

 species. The integuments are thin; not a single specimen is really well pre- 

 served, and the majority a good deal mutilated and somewhat shrivelled; most 

 of them are besides immature or small. 



It may be mentioned that a small, oblong ganglion is found at the base 

 of the process on the eye-stalks; this ganglion is connected with the large optic 

 ganglion by a couple of nerve fibres, and from it a fibre runs towards the end 

 of the process, which probably may have some sensory function. 



SIRIELLA Dana (1850). 



Of this very large genus four species are at hand, three of which were taken 

 in 1904-1905, and a fourth in 1900. 



10. Siriella thompsonii (II. Milne Edwards). 



1837. Cynthia thompsonii H. Milne Edwards, Hist. Nat. Crust., 2, p. 402. 



1852. fSiriella vilrea Dana, U. S. Expl. Exp. Crust., 1, p. 656, pi. 43, figs. 0a-6m. 



?Siriella breoipes Dana, U. S. Expl. Exp. Crust., 1, p. 658, pi. 44, figs, la-lq. 



1861. Cynthia incrinis Kroyer, Nat. Tidsskr., 3, R. 1, p. 44, tab. 2, fig. 6, a-g. 



1868. Siriella edwardsii Claus, Zeitsphr. wiss. Zoo!., 17, p. 271, taf. 18. 



1882. SirieUides indica Czerniav.sky, Mon. Mj-sid., 1, p. 103, tab. 31, figs. 1-6. 



1885. Siriella thnmpsoni G. O. Sars, Challenger Kept., 13, p. 205, pi. 36, figs. 1-24. 



1910. Siriella thompsonii H. J. Hansen, Siboga-Exp., 37, p. 31 (with further notes on synonymy). 



Sta. 4571. Oct. 7,1904. Lat. 33° 40' N., long. 119° 35' W. 4 fms., surface net. 2 specimens. 



Sta. 4576. Oct. 8, 1904. Lat. 29° 52' N., long. 116° 56' W. Surface. 1 specimen. 



Sta. 4611. Oct. 18, 1904. Lat. 10° 33' N., long. 88° 30' W. Surface. More than 30 specimens 



Sta. 4615. Oct. 19, 1904. Lat. 9° 7' N., long. 85° 11' W. Sm-face. 2 specimens. 



Sta. 4617. Oct. 20, 1904. Lat. 7° 45' N., long. 82° 25' W. Surface. 1 specimen. 



Sta. 4619. Oct. 20, 1904. Lat. 7° 15' N., long. 82° 8' W. Surface. 2 specimens. 



Sta. 4635. Nov. 4, 1904. Lat. 3° 52.5' N., long. 84° 14.3' W. Surface. 3 specimens. 



Sta. 4640. Nov. 6,1904. Lat. 0° 39.4' S., long. 88° 11' W. Surface. 1 specimen. 



Sta. 4646. Nov. 8,1904. Lat. 4° 1.6' S., long. 89° 16.3' W. Surface. 1 specimen. 



Sta. 4648. Nov. 9, 1904. Lat. 4° 43' S., long. 87° 7.5' W. Surface. 1 specimen. 



Sta. 4667. Nov. IS, 1904. Lat. 11° 59.5' S., long. 83° 40.4' W. Surface. 1 specimen. 



Sta. 4071. Nov. 20, 1904. Lat. 12° 6.9' S., long. 78° 28.2' W. Surface. 3 specimens. 



Sta. 4677. Dec. 5, 1904. Lat. 14° 37.5' S., long. 81° 41' W. Surface. 1 specimen. 



Sta. 4678. Dec, 6, 1904. Lat. 16° 31.2' S., long. 85° 3.8' W. Surface. 1 specimen. 



Sta. 4680. Dec. 7, 1904. Lat. 17° 55' S., long. 87° 42' W. Surface. 13 specimens. 



Sta. 4682. Dec. 8,1904. Lat. 19° 7.6' S., long. 90° 10.6' W. Surface. 2 specimens. 



Sta. 4683. Dec. 9,1904. Lat. 20° 2.4' S., long. 91° 52.5' W. 300 fms. to surface. 1 specimen. 



Sta. 4685. Dec. 10, 1904. Lat. 21° 36.2' S., long. 94° 56' W. 300 fms. to surface. 2 specimens. 



Sta. 4086. Dec. 10, 1904. Lat. 22° 2.2' S., long. 95° 52' W. Surface. 2 specimens. 



Sta. 4688. Dec. 11, 1904. Lat. 23° 17.2' S., long. 98° 37.5' W. Surface. 3 specimens. 



Sta. 4092. Dec. 13, 1904. Lat. 25° 40.4' S., long. 104° 1.3' W. Surface. 1 specimen. 



Sta. 4094. Dec. 22, 1904. Lat. 20° 34' S., long. 108° 57.3' W. Surface. 4 specimens. 



