G. M. Tuomson.—On the New Zealand Copepoda. 95 
(P.S.—The generie name Boeckia was, I find, originally proposed by 
Dr. Brady for a species of Lichomolgus (L. arenicolus), but as it has lapsed 
for that species, it may stand for the above. In suggesting it, I was quite 
unaware that it had been already employed). 
Fam. CYCLOPIDA. 
Genus Thorellia, Boeck. 
Body expanded in front, tapering posteriorly. Anterior antenne many- 
jointed, much shorter than cephalothorax ; posterior pair 4-jointed, without — 
a secondary branch. Mandibles dilated at the extremity; palp tubercular, 
bearing two filaments. Maxille bearing several strong apical teeth and 
marginal sete. First pair of footjaws 4-jointed, slender, armed wiih 
long marginal spines and sets. Second pair 4-jointed, prehensile, 
terminating in two hooked claws. First four pairs of feet 2-branched, 
each branch 3-jointed. Fifth pair rudimentary, reduced to a single 
branch. 
1. Thoreilia brunnea, Boeck, var. antarctica. Pl. V., figs. 15-19. 
Cephalothorax as broad as long, rounded in front; rostrum short, 
obtuse. Segments of thorax rounded at the sides, much broader than long ; 
abdomen very long and narrow. Anterior antenne about two-thirds as 
long as cephalothorax, 21-jointed, first joint the largest, as broad as long, 
next 8 much broader than long, 11th to 19th about as broad as long, 20th 
longer, and last about twice as long as broad; the first about three times 
as broad as the last; sete numerous on the first nine joints. Posterior 
antenne 4-jointed, about half as long as the anterior pair. Mandible with 
numerous teeth on the dilated apex. Anterior footjaws 4-jointed, bearing 
numerous curved spines and sete; 3rd joint with a brauched appendage. 
First four pairs of feet furnished with peculiar lancet-shaped spines on the 
outer margins and extremities ; fifth pair with a minute basal joint; second 
joint elongated, with one lateral and two terminal spines. Caudal sete 
densely plumose ; middle one as long as the abdomen; outer about three- 
fourths as long. 
- Qolour—semi-transparent, except the caudal segments which are tinged 
with dark red. Length (including caudal sete) 4^. inch. 
Hab. Dredged in Otago Harbour in 7 fathoms. 
This differs from the figure of Thorellia brunnea in Brady’s Monograph 
(vol. i., pl. 16) in a few immaterial points. The anterior antenna is not 
. so continuously setose throughout its length, and the fifth pair of feet has 
_ three long simple spines, in place of the lancet-shaped spines figured by 
Brady. In all other respects, except colour (which is a varying feature of 
no value in this species), our form agrees with the common European 
one, 
