Fauna Associated with Crinoids of Tropical Coral Reef, etc. 89 
ISOPODA. 
Cirolana lineata sp. n. (Plate 1, Fig. 4.) 
This species comes under the second section of the genus as divided 
by Hansen,* in which are included all species with the following 
characters: 
“Lamina frontalis inermis, lata brevis, pentagona (varius fere hexagona), 
vix dimidio longior quam latior. 
“Clypeus inermis, non cornutus, ante perspicue cum lamina frontali con- 
junctus. 
“Antennulae pedunculo obscure triarticulato (primo visu_biarticulato) 
flagello semper satis gracili.f 
‘“‘Pedes omnes setis perpaucis vel nullis instructis.” 
Fie. 6.—Cirolana lineata sp. n. 
For whole animal see plate 1, fig. 4. All figures except E are of the female. 
A. Antenne and frontal lamina.t | E. Second pleopod of male, showing appendix mas- 
B. Maxilliped. X38. culina. X18. 
C. Sixth thoracic leg. X18. | F. Telson and uropods. X18. 
D. Seventh thoracic leg. X18. 
Diagnosis: A small cirolanid, body ovate (female), rather more than twice 
as long as broad. Measurements, female 6 mm. in length, 2.5 mm. in breadth; 
male 4.7 mm. in length, 1.5 mm. in breadth. Occurs on crinoids, generally 
Comanthus annulatum, in Torres Straits. Colour white except, for branding 
chromatophores carrying a purple pigment and arranged in two lateral stripes 
and a fainter median line. 
Head wider than long, anterior margin rounded. Eyes of medium size. 
First antenna stout, first joint of peduncle large, second a little smaller, and 
*Hansen: Cirolanide et familiz nonnull propinque Musei Hauniensis. Kjobenhayvn. 1890. 
See p. 336. 
+But I take exception to the definition of the peduncle as always so obscurely triarticulate; and 
the condition of the peduncle in my species seems to resemble that in C. parva established by 
Hansen, which from the figure is clearly triarticulate. 
tThe duties of the author as an officer in the British Army, prevented his attention to this 
paper as it was going through the press, and figure A was unobtainable. 
