376 THE REV. T. R. R. STEBBING ON 
LEPAS AUSTRALIS Darwin. 
1851. Lepas australis Darwin, Monogr. Cirrip., Ray Soc., vol. 1. 
Ps S95 pie Ethos 
This species was taken in King George’s Sound, on the shore 
after a gale, Sept. 15, 1910. 
Fam. BALANID ®. 
1854. Balanide Darwin, Monogr. Cirrip., Ray Soe., vol. ii. p. 33. 
Gen. Eimintus Leach. 
1825. Hlminiws Leach, Zoological Journal, vol. ii. 
ELMiInius KinGu Gray. 
1831. Elminius kingii Gray, Zoological Miscellany, p. 13. 
1854. i » Darwin, Monogr. Cirrip., Ray Soc., vol. ii. 
p. 348, pl. 11. figs. 6 a6 e. 
1911. #. kingi Ortmann, Princeton Univ. Exp. Patagonia, p. 637. 
- Points by which I have verified this species are the scutum 
without an adductor ridge, the labrum deeply notched, with five 
little teeth on each side, the mandible with four or five teeth. 
Darwin speaks of the first pair of cirri as having ‘‘ one ramus 
nearly twice as long as the other.” In the specimens dissected, 
the difference was not so considerable. The penis was stout 
except near the apex in one specimen, the thin part considerably 
prolonged in the other. 
Mr. Vallentin’s specimens were taken at low water of a spring 
tide affixed to Mytilus edulis in Stanley Harbour. He speaks of 
them as scarce. 
EXPLANATION OF THE PLATES. 
Prats I. 
Tanais ohlini Stebbing. 
n.s. Line indicating natural size of female specimen figured below. 
C. Dorsal view of head and first pereon segment, with first antenne and first 
gnathopods ; frontal line of head conjéctural. 
Pl., urp. Dorsal view of pleon, with lett uropod. 
0c., a.8., a.t. Hye, first and second antenne. 
m., mx.1, mxp. Mandible, first maxilla, maxillipeds. 
gn.1, gn. 2, prp.1, prp.5. First and second gnathopods, first and fifth perwopods. 
urp. Right uropod. 
All the separate parts are magnified to a uniform scale, except the terminal joint 
of the fitth perwopod, which is further given in higher magnification. 
Prats II. 
Exospheroma calcareus (Dana). 
m.s. Lines indicating natural size of male specimen figured. below in dorsal aspect. 
C.V. Ventral view of cephalon with side-plates of first peraon segment, to give an 
idea of the epistome and first and second antenne in position. 
plp.1. The first pleopod, along with the male organs on the last perewon segment. 
plp. 2,3, 4,5. Second, third, fourth, and fifth pleopods, with apical parts of fourth 
and fifth more highly magnified. 
