MA CRURA, SCHIZOPODA. 
Crust. 9 
resemblance to the fossil Erycnidm pointed out : Willemoes-Suhm, 
P. R. Soc. xxiv. p. 577). 
Homaralphceus, g. n., name without description or type, G. S. Bate, 
P. R. Soc. xxiv. p. 378. 
TuALASSINIDiE. 
Callianassa suhterranea (Mont.), Zoea-stage ; Claus, Untersuch. Crust, 
syst. p. 54, pi. viii. figs. 1-7. 
Gebia danai [sic], sp. n., = hirtifrons (Dana, nec White), Miers, 
Ann. N. II. (4) xvii. p. 223, Now Zealand and [?] Davis Straits. 
Carides. 
On the maxillse of several genera and their formation, see Claus, 
Untersuch. Crust, syst. p. 46, footnote. 
Hippolyte larva ; Claus, 1. c. pp. 44 & 45, with woodcuts. 
Virbius bifidirostria, sp. n., Miers, Ann. N. H. (4) xvii. p. 224, New 
Zealand. 
Alpheus novoc-zealandiai, sp. n., id. ibid., New Zealand. 
Palmmon fluvialis, sp. n., without description, G. Spence Bate, P. R. 
Soc. xxiv. p. 379, Port Louis. 
Peneus : on its development, Nauplius-, Metanauplius-, Protozoea-, and 
Mysis-like stages ; Claus, 1. c. pp. 10-12, with woodcuts, 'pp. 41-43, 
pis. ii. & iii. 
Serobstidji. 
Sergestes: On its development, Elaphocaris (Dohrn, 1870) being its 
Protozoea- and Zoea- stage, Acanthosoma (Claus, 1863), the Mysis-like 
stage, and a further ^lastigopus-liko stage following it ; Claus, 1. c. 
pp. 35-40, pis. V. & vi. & woodcuts. Willemoes-Suhm, from his own 
observations, comes also to the conclusion that Elaphocaris is the larva 
of Sergestes ; P. R. Soc. xxiv. p. 133, Ann. N. H. (4) xvii. p. 163, and 
Z. wiss. Zool. xxvii. p. cvi. 
Leucifer (Thomps.) and Acetes (M. E.) belong also to the Sergestidce, 
and are sexually fully developed, but morphologically analogous to 
certain stages of development of Sergestes ; Claus, 1. c. p. 40. A larva, 
probably belonging to Leucifer described; id. 1. c. p. 113, pi. iv. fig. 1. 
Some observations on the development of Leucifer ; Willemoes-Suhm, 
P. R. Soc. xxiv. p. 134, and Ann. N. H. (4) xvii. p. 163. 
SCHIZOPODA. 
Willemoes-Suhm gives several observations on deep-sea Schizopods ; 
P. R. Soc. xxiv. p. 575. 
MYSIDiE. 
Mysis helleri, assimilis, arenosa, and bahirensis, spp. nn., G. O. Sars, 
Arch. Math, og Naturvidensk. i. pp. 7-22, pis. i.-viii., Goletta, Tunis 
