88 Echin. 
XIV. ECHINODERMA. 
(E.)—OPHIUROIDEA. 
History of the classifications of Oph., esp. by Ljungman, Luetken, Haeckel, 
Perrier, F. J. Bell, Gregory, the last three being mainly followed in 
the system proposed :—Class, Ophiuroidea : Ord. I. Zygophiurae : 
Subord. A. Brachyophiurae : Famm. Ophiodermatidae , Ophiolepididae\ 
Subord. B. Nectophiurae : Sectio a. Oligodontida : Famm. Amphiuri- 
dae , Ophiohelidae , Ophiacanthidae : Sectio /3. Polyodontidci : Famm. 
Ophioconidae , Ophiotricliidae\ Ord. II. Streptophiurae : Fain. Ophio- 
- myxidce : Ord. III. Cladophiurae : Farm Astrophytidae\ Subfamm. 
G mae, Trichasterinae , Euryalinae ; diagnoses are given of 
the preceding (exc. of Ophiuroidea) and of genera, under which are 
lists of spp., followed by index to trivial names; Meissner in Hamann 
( 146) pp. 902-966. [Among noteworthy omissions are all extinct 
genera and Astrophiura, while Verrill’s genera of 1899 are regarded 
as synonyms.] 
Acantharachna , v. Ophiomastix. 
\Acroura\ — A. prisca (p. 49), A. squamosa (p. 48); Grassmueller (137). 
Amphilepis , defined, list of spp.; Meissner in Hamann (146) p. 931. 
A. norvegica , 343 metres; Koehler (173) p. 102. 
Amphiodia (?)planispina (p. 247), A. pulchella (p. 248), A. riisei (p. 248); 
Clark (66). 
Amphioplus stearnsii ; Clark (66) p. 248. 
Amphipholis , v. etiam sub Amphiura. A. elegans; Whiteaves (320) 
p. 59. A. goesi , A. limbata, and A. subtilis ; Clark (66) p. 247. 
Amphipsila discussed, Ophiopsila fulva cannot be taken as genotype, this 
leaves only A. maculata ; Clark (66) p. 245 : syn. of Ophiopsila ; 
Meissner in Hamann (146) p. 932. 
Amphiura , defined, inch Amphipholis , list of spp. ; op. cit. p. 929. A. sp., 
see ii, D, vii; Dawydoff (84). A. belgicae Koehl. 1900, Antarctic, 
descr.; Koehler (172) p. 27, pi. vii. A. bihamula n. sp., Porto Bico, 
91 fms.; Clark (66) p. 247, pi. xiv. A. canadensis', Whiteaves (320) 
p. 59. A: chiajii; Todd (302) p. 365. A. elegans; Newbigin (221) 
p. 133. A. exiqua ; Whiteaves (320) p. 59. A. fdiformis ; Todd 
( 302) p. 365: 'l75 metres; Koehler (173) p. 102: (?), Pluteus ; 
Mortensen (214) p. 20 & fig. A. flexuosa ; Clark (66) p. 247. A. 
polita Koehl. 1900, Antarctic, descr., and compared with all Arctic 
and Subantarctic spp. of genus ; Koehler (172) p. 29, pis. vii, viii. 
A. squamata ; Koehler (173) p. 102 : mouth-parts ; Zur Strassen 
(338). A. stimpsoni; Clark (66) p. 247. A. sundevalli ; Rankin 
( 252) p. 178 : Whiteaves (320) p. 59. A. ? urtica, disc 6 mm., rays 
300 nun.; Clark (63) p. 330. 
Amphiuridae , defined ; Meissner in Hamann (146) p. 927. 
Astroceras , defined ; op. cit. p. 952. 
Astrochele , defined ; op. cit. p. 950. 
Astroclon , defined ; op. cit. p. 954. 
Astrocnida , definedop. cit. p. 953. 
Astrogomphus , defined ; op. cit. p. 950. 
Astronyx , defined, list of spp.; op. cit. p. 951. A. loveni ; Koehler (173) 
p. 103 : Whiteaves (320) p. 62. 
Astrophis , defined ; Meissner in Hamann (146) p. 949. 
Astrophiura , mouth-parts ; Zur Strassen (338). 
Astrophytidae , sole farm of Cladophiurae ; Meissner in Hamann (146) 
p. 949. , 
Astrophyton , defined, list of spp.; op. cit. p. 955. A. agassizi, photograph 
of large example; Kolthoff (174) p. 153. A. clavatum ; Bell (25). 
A, eucnemis ; Kolthoff (174) p. 152. 
