342 Merrill—Structure and Affinities of Bunops Scutifrons. 
antennules, it most closely resembles Latkonura-. in antennae 
Ophryoxus\ in post-abdomen, Streblocerus ; in general form 
Drepanothrix ; and so on. 
On the other hand, the two species united under this name 
show so many and so great peculiarities of structure, as- 
to be entitled to rank as a separate genus of the family 
Macrothricidee. 
EXPLANATION OF PLATES. 
PLATE XIV. 
Bunops scutifrons , Birge. 
Fig. 1. Female. X 65. Arather small specimen. 
2. Valves from below. X 65. 
3. Animal from above. X 65. 
4. Head. X 100. a , lens-like body. 
5. Young female from front. X 100. 
6. Valves seen obliquely from below. X 65. 
7. Ophryoxus gracilis , Sars. Female from below. X 65. 
PLATE XV. 
Bunops scutifrons. 
Fig. 1. First leg. X 175. 
2. Second leg. X 175. 
3. Third leg. X 350. 
4. Fourth leg. X 350. 
5. Fifth leg, X 175. 
e, exterior ramus; i, interior ramus; i', inner di¬ 
vision of interior ramus; g, gill sac; m, maxillary 
process; b , hook of first leg. In the fifth leg i de¬ 
notes the maxillary process of the interior ramus. 
In the first leg the exterior ramus is represented, 
by the slight projection not far above i. 
6. Post-abdomen. X 175. 
