PHYSIOLOGY, CLASSIFICATION. Crust. 27 
Gilson, discussing spermatogenesis in Arthropoda , deals with certain 
Crustacea. His conclusions will be found on p. 69. On p. 85 is given a 
bibliography of the subject. 
For the intercoxal lobe of Crayfishes, see Mackay. 
Elementary histology of the Crayfish ; Osborn. 
For research on the gastric juices of the Crab, see StamVti (2, 3). 
V.— CLASSIFICATION. 
Bate proposes the following classification of Macrura : — 
Macrura. 
Div. 1. Div. 2. Div. 3. Div. 4. 
Trichobrancliiata. Dendrobranchiata. Phyllobranchiata. Anomobranchiata. 
I. TRICHOBRANCHIATA. 
(1) Normalia. 
Tribe 1. Synaxidea . 
Tribe 2. Astacidea . 
Tribe 3. Stenophidea 
(2) Aberrantia. 
Fam. 
C Scy liar idee. 
( Palinuridce. 
r Euryonidce. 
^ Ilomaridce. 
C A stacidee. 
Stenophidce. 
' Galathceidce. 
Pylochelidce. 
Thalassinidce. 
Callianassidce. 
A sendee. 
Thaumaetochelidce. 
(0 
( 2 ) 
II. DENDROBRANCHIATA. 
Normalia. 
Tribe Peneidea . 
Aberrantia. 
Tribe Schizopoda 
Peneidce. 
Sergestidce . 
[ 
Euphausidce. 
Lophogastridce. 
Eucopidee. 
My sides . 
III. PHYLLOBRANCHIATA. 
(1) Normalia. 
Tribe 1 . Crangonidea . 
Tribe 2. Polycarpidea . 
Crangonidce. 
f Nikidce. 
1 A Ipheidce. 
I Uippolytidee. 
* Pandalidce. 
