362 
ZOOLOGICAL LITERATURE. 
The same author (Ann. Sc. Nat. yol. iv.) describes 
Boti'yllophilus virescens, Hesse, 1 . e. p. 223, found in a variety of J^otrylhis 
couitellatus attached to Fucus j B. pallidus, sp. n., Hesse, 1 . c. p. 224, found in 
a Boti'yllus, 
M. Hesse has arranged together several genera in eonsequenee 
of the similarity of their modes of existence and the relation that 
they bear to one another in structure. Upon this latter feature 
he has classified them as 
A. The pleon terminating in two sharp-pointed appendages. 
B. The pleon terminating in two flat appendages. 
C. The pleon terminating in a broad flat process. 
AdranesiiiSj g. n., Hesse, /. c. p. 254. Cephalon small, triangular; eye 
median ; antennae short ; pereion cylindrical, narrowing to the extremities ; 
somites distinct, four ; pleon nearly as long as the pereion, terminating in two 
sharp appendages. Adranesim ruler, sp. n., Hesse, 1 . c. p. 229, pi. vi. figs. 
1 d-4 d *, found in a Pohjclinum constellatum. 
Mychopliilus, g. n., Hesse, 1 . c. p, 255. Cephalon small, triangular, provided 
with two short stout antennae ; eye median ; pereion cylindrical, tumid, nar- 
rowing to the extremities ; pleon longer than the pereion, terminating in two 
sharp-pointed appendages. M. roseus-2) sp. n., Hesse, /. c. p. 232, pi. vi. 
figs. 1-8, and M. pacftyyaster ^ , sp. n., Hesse, 1. c. p. 235, found in compound 
A.scidians. 
Narcodes, g. n., Hesse, 1. c. p. 266. Cephalon tolerably large ; ej'^e median ; 
antennae short and stout; pereion cylindrical, long, broader dorsally than 
ventrally ; somites distinct ; pleon small, conical, terminating in two long- 
sharp appendages. Narcodes macrostoma, Hesse, /. c. p. 236, pi. vi. figs. 1 a- 
6 A, found in a compound Ascidian. 
Cryptopodus, g. n., Hesse, 1. c. p. 255. Cephalon small, triangular, provided 
with a pair of tolerably large round or flat antennae, accompanied at their 
base by a flat process; eye median ; pereion Jong, cylindrical; somites four, 
the last twice the size of the others, and provided with lateral flat processes ; 
pleon straight, conical, and cylindrical, divided or not into four somites, of 
which the last is flat and bifurcate. Cryptopodus Jlavus $ , sp. n., Hesse, /. c. 
p. 237, pi. vii.t fig'3. 2 a-2 i, in a yellowish -white compound Ascidian ; 
C. viridis $ , sp. n., Hesse, 1 . c. p. 239, pi. vii. figs. 3 a-3 h, found in a green 
compound Ascidian. 
Biocryptus, g. n., Hesse, 1. c. p. 266, Cephalon large, round ; eye median ; 
antennae none or rudimentary ; pereion stout, short, cylindrical ; somites in- 
distinct ; posterior somite interiorly developed to form a protection to the 
base of the ovisacs ; pleon as broad as the pereion, truncated, furnished with 
two small oval appendages ; pereiopoda supporting a secondary appendage 
(pattes thoraciques doubles). Biocryptus roseus $, Hesse, /. c. 242, pi. vi. 
figs. 1 B-10 B, found in a compound Ascidian ; B. Jlavus, Hesse, /. c. p. 244, 
pi. yi. figs. 1 c-10 c, found in a compound Ascidian. The author says that 
these species have a close affinity to Jntercola fxdycns of Van Beneden. 
* In the reference in the text 1 p is misprinted for 1 d. 
t The reference in the tc.\t is nii.sprinted IM. 6.” 
