
438 RECORDS OF THE 5,4. MUSEUM 
Genus. ZIMMERIANA Noy, 
Die Zimmer (nec Stebbing) 1914, p. 190; Hale, 1936, p. 422. 
This genus shares with Allodiastylis a complete absence of thoracic exopuds 
in the female and the development of a pair of long terminal spines on the male 
telson. Added to these characters the modification of the first peraeopod is 
distinctive, the dactylus being large and subcylindrical, with an unusual arrange- 
ment of the setue, these radiating, mainly from the distal third, to form a brush 
unlike the dactylar furniture occurring elsewhere, As in Allodiasiylis and 
Dicovides, the basis of the first peraeopod is very short in relation to the rest of 
the limb, 
The pseudorostrum is almost horizontal in the female, decidedly downbent 
in the adult male; the telson is subeylindrical in both sexes. The second antenna 
of the male ig short, the flagellum not exceeding the pedunele in length, the basis 
of the third maxilliped is rather strongly widened distally in both sexes and 
the mandible, as in Gynodiastylis, hag about ten spines in the row (seven to eleven), 
The endopod of the uropod is trisegmentate in the female and young male, biseg- 
mentate in the adult male. 
Genotype Die lesiodactylum Zimmer, 
The genus is named after Dr. Carl Zimmer, who described the type species. 
Only one adult male is available; this differs remarkably in form from the 
female but was agsociated with it in the first place by the unmistakable structure 
of the first perseopod, just as in the related Allodiastylis the first antenna provided 
the key character, 
KEY TO SPECIES OF ZIMMERIANA 
1. Telson longer than peduncle of uropod and armed with spines ventrally spinicauda (Hale). 
Telaon not longer than peduncle of nropod and not epinose ventrally a 
2, Ovigerous female with pleon longer than cophalothorax and with anterior perseopods long. 
Carpus of firat pair distinctly longer than basis and earpus of second about twice as long 
as merua or A re <p “4 longtirostria sp. Dov, 
Ovigerous female with pleon not as long as cepbalothorax and with anterior perseopods 
shorter and stouter; carpua of first pair only about as long as basis, and earpus of second 
half as long again as merus ., = a .. ,, lasiodaotyla (Zimmer ) 
1 2 
ZIMMERIANA SPINICAUDA (Hale) 
Die lasiodactylum var. spinicanda Hale, 1987, p. 69, fig. 5b (also Hale, 1936, 
p. 423-424, tig. 13, a-g.), 
This form oceurs in Spencer and St, Vincent Guilfs, South Australia; the 
adult male has not been taken yet, Apart from the character of telson and carapace 
the dactylus of the first peraeopod is relatively longer than in the other species 
referred to the genus, 
ZIMMERIANA LONGIROSTRIS sp, NOV, 
Die lasiodactylum Hale (nec Zimmer), 1936, p, 422 (part) and 1937, p. 69, fig. 5 a. 
Oviygerous female, Integument not highly calcified, tough and not brittle; 
surface shallowly pitted. 
Carapace not quite one-third of total length of animal and. twice as long 
ag pedigerous somites together; it is more than half as long again as deep, and 
ag wide as deep; from above it sub-pytiform with pseudorostrum long and slender , 
om each side there is a slight concavity, margined above and below by a low, 
