358 REPORT—1885. 
unusual forms of telsons, such as 0. tarda and C. primula, may belong to- 
Nothozoe or some of the associated genera. M. O. Novak refers indi- 
viduals of C. debilis to Aristozoe regina (see further cn). Some also of 
the toothed mandibles may belong to such genera, as shown by Mr. C. E. 
Beecher. 
31. M. Barranpe’s Artstozor, Orozon, CaLLizon, AND NoTHozor. 
In 1863 (‘ Sixteenth Report State Cabinet N. Y.’ p. 74) Dr. James. 
Hall referred a certain Devonian Ceratiocarid, with some doubt, to: 
Aristozoe, thus intimating a relationship for this genus different to that 
which Barrande thought of. Hall’s species, however, has been since 
placed in the genus Hehinocaris by Prof. R. P. Whitfield, who, though 
he did not regard Aristozoe as a Ceratiocaridal Phyllopod, but, with 
Barrande, as an Ostracod, collocated his Aristozoe Canadensis with some 
species of Hchinocaris for comparison, in the plate (separate) illustrating 
his paper in the ‘ Americ. Journ. Sci.’ ser. 3, vol. xix. January 1880. 
With these facts before us, as supporting our own views on the subject, we 
inserted the Aristozoe, Orozoe, and Callizoe of Barrande in our Synopsis of 
the Genera of Fossil Phyllopods at p. 217 of ‘ Brit. Assoc. Rep.’ for 1883 ; 
and we now add his Nothozoe as being probably near to Ceratiocaris. 
M. Barrande illustrated several species of these genera in his ‘ Systeme 
Silur. Bohéme,’ vol. i. Suppl. 1872. Some he had already mentioned 
by name in Dr. Bigsby’s ‘ Thesaur. Siluricus,’ 1868, p. 199. The genera 
were established in 1872. 
1. Aristozve amica, 1868, p. 476, pl. 24, figs. 32-39. 
if bisulcata, 1868, p. 477, pl. 23, figs. 9-14. 
- inclyta, 1872, p. 478, pl. 24, figs. 40, 41. 
lepida, 1872, p. 479, pl. 24, fig. 42; pl. 27, fig. 7; pl. 32, figs. 14, 15. 
memoranda, 1868, p. 480, pl. 24, figs. 43-51; pl. 27, fig. 6; pl. 32, 
figs. 16, 17. 
sy orphana, 1868, p. 481, pl. 23, figs. 6-8. 
5 perlonga, 1868, p. 482, pl. 23, figs. 26-39. 
Pe regina, 1868, p. 483, pl. 22, figs. 14-23; pl. 27, fig. 5. 
3 (2) Jonesi, 1872, p. 478, pl. 25, figs. 9-13. 
2. Orozoe mira, 1868, p. 537, pl. 24, figs. 23-26; pl. 31, figs. 7-9. 
3. Callizoe Bohemica, 1868, p. 503, pl. 22, figs. 1-13. 
4. Nothozoe pollens, 1868, p. 536, pl. 23, figs. 15-21; pl. 27, figs. 1-4. 
1. Avistozoe has strong convex valves, straight dorsally, variously 
and often boldly curved downwards and backwards ventrally, with strong 
ventral rim, Various and usually strong cephalothoracic nodes, com- 
prising tubercles which, marking places of attachment of internal organs, 
especially those of the buccal region, are usually present. The valves 
gape ; in A. Jonesi (which has one feeble node) very widely at both ends. 
This, probably, is generically distinct. Valves of different species, and 
of different ages, vary from 10 to 80 mm. in length. The ornament in 
some is a minute reticulation (fig. 2, pl. 23); in others it is delicately 
linear (fig. 76, pl. 27). 
A. perlonga has persistently a small neat tubercle on the middle of 
the rim bordering the posterior edge of the valve. The tubercle of the 
muscle-spot (?) is very strong in this form, and the valves are relatively 
long and narrow. With one specimen of A. perlonga in the British Museum 
(‘ 42586 ’) a fragment of a thin caudal spine of some Ceratiocarid is closely 
imbedded. M. O. Novak has found reason to treat of A. regina as 
a Ceratiocarid with abdominal segments and caudal spines. (See 
further on.) 
