56 
THE VOYAGE OF H.M.S. CHALLENGER. 
Tabular 
Vieiv of the Tetillidse. 
Oxea. 
Protrieene. 
Anatrisene. 
Sigm aspire. 
Microrhabd. 
Genus Tetilla. 
I, Soecies without microscleres. 
1. Tetilla antarctica (Cr.), 
1-25 
present 
present 
2. Tetilla pedifera, Soil., 
3- 
2 
2-4 
4-5 
. . . 
... 
II. Species with a single form of micro- 
sclere. 
(a) Simple sigmaspires under 0'02 
mm. in length. 
3. Tetilla daetyloidea (Cr.), . 
1-35 
1-43 
12-0 
8 
(y8) Simple sigmaspires over O'Ol 
and under 0'03 mm. in 
length. 
4. Tetilla gravata, Hyatt, 
2’0 
3-5 
3-5 
13 
5. Tetilla sandalina. Soil., 
2-33 
present 
28 
6. Tetilla ridleyi, n. n., 
2-5 
present 
present 
16 
7. Tetilla coronida, n. sp., 
3-4 
3-4 
7-14 
16 
8. Tetilla arahica (Cr.), 
3-5 
6-4 
4-5 
12 
9. Tetilla leptoderma, Soil., . 
4-3 
4-0 
7-5 
20 
10. Tetilla casula (Cr.), . 
5-0 
10-42 
absent 
14 
11. Tetilla grandis, Soli., 
6-0 
8-6 
31-5 
12 
12. Tetilla polyura, 0. Sch., . 
present 
present 
present 
20 
13. Tetilla radiata, Selenk., 
• • • 
... 
(y) Simple sigmaspires over 0'03 mm. 
in length. 
14. Tetilla rohusta (Cr.), . 
3-34 
4-0 
4-0 
34 
(S) Sigmaspires centrotylote. 
15. Tetilla geniculata, Marenz., 
5-0 
present 
10-0 
13 
(e) Sigmaspires spined. 
16. Tetilla japonica, Lampe, . 
4'0 and over 
present 
present 
17 
III. Species with two forms of microscleres. 
(a) No additional megascleres present. 
17. Tetilla australiensis (Cr.), . 
5-7 
5-7 
17 
210 
(fi') Modified trisenes also present. 
18. Tetilla merguiensis (Cr.), . 
4-2 
6-17 
6-17 
11 
250 
(y) Amphitrisenes present. 
19. Tetilla stipitata (Cr.), 
3-5 
24 
59 
Somal. 
Cortical. 
Genus Chrotella. 
20. Chrotella simplex, Soil., 
3 0 
3-4 
5-3 
12 
21. Chrotella macellata, Soil., . 
5-7 
8-0 
6-5 
16 
Genus Cinachyra. 
22. Cinachyra harhata, Soil., . 
8-0 
0-9 
21-0 
40-0 
16 
Genus Craniella. 
(a) Species without sigmaspires. 
23. Craniella carteri, Soli., 
2-56 
3-5 
6-75 
24. Craniella simillima (Bwk.), 
3-3 
i-4 
5-6 
6-63 
25. Craniella lens, 0. Sch., 
3-3 
0-96 
5-18 
present 
26. Craniella pulchra, n. sp., . 
4-6 
1-2 
7-1 
present 
27. Craniella zetlandica {Cx.), . 
4-6 
1-1 
5-3 
5-3 
28. Craniella infrequens (Cr.), . 
present 
0-58 
present 
present 
29. Craniella insidiosa, 0. Sch., 
(incerta sedis) 
