192 THE SCHIZOPODA. 



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



Remarks. — This small species is allied to B. microps G. O. Sars, but differs 

 especiall}^ 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 Dan-a (ISoO). 



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 (H. Milxe Edwards). 



1837. Cijnlkia thompsonii H. Milxe Edwards, Hist. Nat. Crust., 2, p. 462. 



1852. '^Siriella vilrea Dana, U. S. Expl. Exp. Crust., 1, p. 6.56, pi. 43, figs. 6a-6m. 



'^Siriella brevipes D.\na, U. S. Expl. E.xp. Cru.st., 1, p. 658, pi. 44, fig.s. la-lq. 



1861. Cynlkia inermis Kroyer, Xat. Tklsskr., 3, R. 1, p. 44, tab. 2, fig. 6, a-g. 



186S. Siriella edwardsii Cl.vus, Zeitschr. wis.s. Zool., 17, p. 271, taf. 18. 



1882. Siriiilides irulica Czkrniavsky, Mod. Mysid., 1, p. 103, tab. 31, figs. 1-6. 



1885. Siriella Ihompaoni G. O. Sars, Challenger Rept., 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' X., 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. Surface. 2 specimens. 



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



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



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



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



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



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



Sta. 4667. Xov. 18, 1904. Lat. 11° 59.5' S., long. 83° 40.4' W. Surface. 1 specimen. 



Sta. 4671. Xov. 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. 4686. Dec. 10, 1904. Lat. 22° 2.2' S., long. 95° 52' W. Surface. 2 specimens. 



Sta. 4688. Dee. 11, 1904. Lat. 2.3° 17.2' S., long. 98° 37.5' W. Siu-face. 3 specimens. 



Sta. 4692. Dec. 13, 1904. Lat. 25° 40.4' S., long. 104° 1.3' \V. Surface. 1 specimen. 



Sta. 4694. Dec. 22, 1904. Lat. 26° 34' S., long. 108° 57.3' W. Surface. 4 specimens. 



