134 H. J. HANSEN. 
slightly shorter and a little more slender than that of sixth 
pair ; the end of abdomen is rather obtuse, and exp. of urp. 
not longer than endp. But while these remarks on seventh 
thoracic legs, end of abdomen, and urp. agree well with Miss 
Richardson’s description of T. alaskensis, my remarks on 
the female agree with description and figures of T. convexus; 
the latter species must, therefore, be cancelled as established 
on females of T. alaskensis. The male is, besides, larger 
than the female ; in Miss Richardson’s paper some differences 
between length of antennulz and antennz in the two “ species ” 
are noted; a difference in the place of the eyes is also men- 
tioned. The eyes are nearly equal in size in the two sexes 
and they occupy exactly the same place, but the area between 
the front end of the eyes and the anterior margin of the head 
is broader in the male than in the female. 
EXPLANATION OF PLATE 7. 
(1) Cymodoce pilosa (M.-Edw.). 
Mouth-parts of an adult male (small specimen) ; all x 18. 
Fic. 1 a4.—Left mandible, from below. 
Fie. 1 4.—Distal half of same mandible, obliquely from below and from the 
inner side. 
Fic. 1 e.—Left maxillula, from below. 
Fie. 1 d.—Left maxilla, from below. 
Fig. 1 e.—Left maxilliped, from below. 
Fic. 1 f—Hypopharynx (paragnatha), from below. 
(2) Cymodoce pilosa (M.-Edw.). 
Mouth-parts of an ovigerous female (specimen of about the same size as the 
male shown in figs. 1 a-1f); all x 18: same enlargement as in the male. 
Fic. 2 a.—Left mandible, from below. 
Fic. 2 6.—Left maxillula, from below. 
Fic. 2 ¢.—Left maxilla, from below. 
Fic. 2 d.—Left maxilliped, from below. 
Fic, 2 e,—Hypopharynx, from below. 
