Remarks. I have felt justified in establishing this new genus to include a 

 number of species previously referred to the genus Scolecithrix of Brady, but, like 

 Amallophora, differing materially from the type of this genus, S. dance (Lubbock), 

 in the presence in the female of a 5th pair of distinct, though small legs. This 

 genus differs from Amallophora in the structure of these legs in both sexes, as 

 also in the uniform appearance of the terminal appendages of the anterior maxilli- 

 peds, these being all vermiform as in Scolecithrix. The type of this genus is 

 8. minor of Brady, a species which seems to have a very wide distribution, and 

 also belongs to the Norwegian fauna. In addition to this, the following Mediter- 

 ranean species, recorded by Dr. Giesbrecht, are in all probability referable to 

 the same genus, viz. 8. vittata, tenuiserrata, profunda, longipes, abyssalis, dubia, 

 dentata, marginata, longifurca. In the Northern Ocean, only the type species is 

 represented. 



23. Seoleeithrieella minor (Brady). 



(PI. XXXVII & XXXVIII). 



Scolecithrix minor, Brady, Report on the Copepoda of the Challenger Expedition, 

 p. 58, PI. XVI, figs. 15, 16; PI. XVII, figs. 15. 



Specific Characters. Female. Anterior division of body, seen dorsally, 

 oblong oval in form, greatest width but slightly exceeding l / 3 of the length, anterior 

 extremity narrowly rounded, posterior somewhat contracted; seen laterally, gently 

 vaulted above and obtusely truncated anteriorly, the dorsal margin forming 

 a remarkably bold curvature in front. Last segment of metasome with the 

 lateral parts somewhat lamellar, forming an obtuse corner below. Urosome unusu- 

 ally small and narrow, only slightly exceeding y 4 of the length of the anterior 

 division, genital segment constricted at the base and not at all protuberant below. 

 Caudal rami comparatively short and somewhat divergent, with all the apical setae of 

 the same length. Eye very small, subventral. Anterior antenna? moderately slender, 

 reaching, when reflexed, about to the end of the anterior division of the body, 

 the first 2 articulations not distinctly defined. 2nd and 3rd pairs of natatory 

 legs with scattered spinules on the hind face of both rami ; 4th pair without such 

 spinules. Last pair of legs forming each a broadly oval lamella armed inside 

 the tip with 2 unequal spines, the distal one very small, the proximal one about 

 half the length of the lamella, outer edge with a small ledge at about the middle. 



Male resembling the female both in size and general form, though having 

 the urosome more elongated and, as usual, 5-articulate, last segment very short. 

 Caudal rami comparatively shorter than in female and mobile. Anterior antennae 

 with well-marked, band-like, sensory appendages on the proximal part, and angularly 



