CTIiKTOPODA. 
49<) 
Enchone ruhella, Ehlers (Heiiglin, 1. c.), pp. 245 & 24G ; E. elegans 
(Verr.), Verrill, Am. J. Sci. (3) vii. pi. vii. fig. 4 ; Vermilia serrula 
(Stimps.), id. 1. c. p. 499, fig. 3, pi. vi. fig. 1, P. Am. Ass. 1. c. pi. iv. fig. 3. 
Sahella fusco-tivniata, sp. n., Grube (7), pp. 328 & 329 ; S. discifera, id. 
(8), p. 64 (Adriatic) ; Protula media (St.), Mobius, 1. c. p. 256, pi. i. figs. 
21-24. 
On the characters of Apomatm, and its relations to Pfajgm.ohranchus ; 
Marion (13). 
Phreocystes Jieydeni, sp. n., Noll (14), (Rhine). 
Profiting by Boeck’s discovery of the invariable position of certain 
tubercles on the girdle, called by Eisen “ tubercula pubertatis,” in relation 
to the “ lobus cephalicus” and “tubercula ventralia,” Eisen (3) reviews 
the Scandinavian species of Lumhricus., which he is, through this char- 
acter, now capable of distinguishing more sharply. The gQnm Lumhricus 
is subdivided as follows : — 
A. Setae ubique binae approximates. 
I. Tubercula ventralia in segmento 14to post segmentum buccale. 
1. Lobus cephalicus postice segmentum buccale in 2 partes divi- 
dens. Lumhriem (s. str.) terrestris, pnirpurem, E., rubellus, 
H. 
2. Lobus cephalicus postice segmentum buccale non dividens. 
A llohop>hora^ g. n. {communis, riparius, feetidus, and several 
new species). 
II. Tubercula ventralia in segmento 12do post segmentum buccale. 
Corpus postice quadrangulum. Allurus, g. n. {tetreedrus, Sav.). 
B. Setao esqiio intcrvallo distantos, duabus summis excoptis, quarum 
intcrvallum aliquauto majus est. Tubercula ventralia in seg- 
mento 14to. Lobus cephalicus 3 partes segmenti buccalis occu- 
pans. Dendroheena, g. n. (puter). 
New species : — Allohopliora turgida, E. {cyaneus, Sav. ?, &c.), mucosa, E. 
{carncus, Sav. ?), norvegica, E. (Tromso), arhorea, E. (in rotten stumps), 
suhruhicunda, E., p. 46-53 ; Dendroheena hoecki, E. {puter, E.), p. 53. In 
a second paper (4) are described ; Allohopliora tiirgida, var. tuherculafa, 
A . tenuis, E. (Niagara, Mt. Lebanon), tumida parvus, E. (Mt. Lebanon), 
pp. 43-46, pi. ii. figs. 1-12. 
Tetragonurus, g. n., Eisen (4) [name pre-occupied], dilfering from 
A llurus by the ventral tubercules being placed on the 11th segment, 
and by the undivided buccal segment; T. pupa, sp. n., id. 1. c. p. 47, pi. ii. 
figs. 13-16 (Niagara). 5 
Pontodrilus, g. n., Perrier (16 & 17). Lumhricini postclitellini ; 
founded for L. liltoralis, Gr., and for another species {P. marionis, sp. n., 
Verr.) living among Posidonia- detritus, and the like, on the banks of the 
Mediterranean. From the disposition of its bristles, it approaches 
the true Lumhrici, but its other external characters, and the plan of its 
organization, are rather those of Periclueia, while the want of a true 
crop or stomach, of a subnerval vessel, and of segmentary organs in the 
segments of the genital glands, are suggestive of the Naidca, and the 
segmentary organs of Phreoryctes. 
