32 Crust. 
CKUSTACEA. 
described aud figured), pp. 100-150, pi. vii. fig. 16, pis. viii. ix. & x. 
figs. 1-5. 
Olencira (Leach), distinct by the contracted occiput from all the pre- 
ceding genera ; the only species, 0. prcegustator =■ lamarchi (Leach), 
common in North America in the mouth of fresh-water fishes, pp. 150-154, 
pi. viii. figs. 6-9. 
Asotana^ g. n. Distinct from all the preceding genera by two deep 
notches in the front. A. furniosa, sp. n.. River Ica, Pera, pp. 154-156, 
pi. viii. figs. 10-12. 
Livoneca novce-zeelandioi (White), Straits of Magellan ; Miers, P. Z. S. 
1881, p. 77. 
Bopyrid^. 
The oral parts of Bopyrus, Gyge, lone, Cepon, Phryxus and the new 
genera Gigantione and Bseudione are compared and discussed by R. 
Kossmann, Z. wiss. Zool. xxxv. pp. 658-664, pi. xxxiii. 
Anatomical notes on the intestinal tract, liver, heart, nervous system, 
and genital organs of the Bopyrldce, with critical remarks on the state- 
ments of previous authors ; id. 1. c. pp. 672-679, pi. xxxv.; also R. Walz, 
Zool. Anz. iv. pp. 159-164. 
List of generic names of Bopyridce and of the species of Crustacea in 
which they have been found ; R. Kossmann, 1. c. pp. 653 & 654. 
Bopyrus virbii, sp. n., Walz, Zool. Anz. iv. pp. 159 & 164, Trieste, 
common, in the branchial cavity of Virbius viridis. [Cf. the following.] 
Bopyrina, g. n. Inner antennae of both sexes strong, the basal joint 
dilated and cutting in the female ; outer antennae in the adult rudi- 
mentary. Pleon of both sexes indistinctly segmentated, without epimeral 
lobes. B. virbii (Walz, Bopyrus, 1881), Naples, on Virbius viridis. 
Kossmann, /. c. pp. 666-672, pi. xxxiv., with previous notes on various 
stages of development. 
Bopyrina ocellata (Czerniawsky, 1868, Bopyrus), Black Sea, on the 
gills of Virbius ; a variety of it = B. virbii (Walz, supra, and Kossmann, 
supra ) : both shortly described by Czerniawsky, Zool. Anz. iv. p. 529. 
lone thoracica (Latr.), younger stages of the female described ; the 
so-called branchial appendages are not respiratory, but fill up the inter- 
vals between the gill-leaves of its host ; 6 pairs of epimeroid ” and 2 
“ pleopodoid ” appendages in the pleon, the epimeroids are perhaps 
respiratory. Kossmann, MT. z. Stat. Neap. iii. pp. 171-180, pi. x. 
Bseudione, g. n. Maxillipeds of the male quite rudimentary. An 
undescribed species on Callianassa subterranea. Kossmann, Z.' wiss. 
Zool. xxxv. p. 663, pi. xxxiii. fig. 17. 
Gigantione, g. n. Male with 6- jointed external antennae, distinctly 
segmentated pleon, and six pairs of oval pleopods. Female nearly cir- 
cular ; inner antennae 3-jointed, the first joint very dilated ; external 
antennae 5-jointed ; periopods with short pointed claw ; lateral edges of 
all segments of the perion aud pleon lobiform, but not ramified ; all 
pleopods, except the first pair, ramified. G. mcebii, sp. n., female 15 mm.. 
