CIREIPEDIA— BORRADAILE. 



131 



5. Lithotrya atlantica, n. sp. Fig. 4, Fig. 5, a, b. 



Three specimens of a Lithotrya, taken in calcareous rock on the shore at South 

 Trinidad Island, closely resemble L. pacijica, Borr., 1900, but differ from that species in 

 having the distal row of scales of the peduncle much smaller and more numerous, and 

 also in the mouth-parts (Fig. 5). The distance between the first and second teeth of 

 the mandible is much greater than, instead of being nearly the same as, that between 

 the second and third ; and the lobes of the maxilla are not so distinct. The palps and 

 maxillules, though not identical in the only two specimens I have been able to compare, 

 are less unlike. The above-mentioned differences are probably specific. 



Station 36. 



Family LEPADIDAE. 

 Sub-Family LEPADINAE. 



6. Lepas pectinata, Spengler, 1793. 



Lepas iKctinata, Spengler, Darwin, Lepadidae, p. 85, pi. I, fig. 3, Raj^ Soc. (1851); Pilsbrj^, 

 Bull. U.S. Nat. Mus. 60, p. 81, pi. VIII, figs. 4-8 (1907). 



Half-a-dozen specimens with well-marked ribs and moderate pectination were 

 taken on floating weed at Station 89 (off Three Kings Islands, surface). 



7. Lepas testudinata, Aur., 1894 (?). 



Lepas testudinata, Aurivillius, K. Svenska Vet. Ak. Hand). XXVI, no. 7, p. 7, pi. I, figs. 1-3 ; 

 pi. VIII, fig. 4 (1894). 



The "Terra Nova" example appears to belong to 

 this species by every character except the absence of the 

 second filamentary appendage. As, however, the speci- 

 men is somewhat damaged in the region of that structure, 

 it is possible that the appendage was really present. 



Station 143 (34° 58' S., 170° 12' E., surface). 



8. Lepas affinis, n. sp. Fig. 6. 

 Numerous specimens of a Lepas, removed from the 



bottom of the " Terra Nova" while she was in Lytteltou 

 Harbour, in October, 1911, are nearly related to L. hilli, 

 but differ from that species in the following respects : — 



1. The occludent edge of the scutum is either 



straight, or slightly concave, or slightly convex, 

 not markedly convex, as in L. hilli. 



2. There is less space than in L. hilli between the carina and scutum, and the 

 branches of the forked end of the former extend further lieneath the latter. 

 This appears to be due to a greater width of the scutum. 



Fig. 6. — Lepas affinis, n. sp. x IJ. 



