6 - Sphaeromatidae::“Cute As Buttons”

160 FLABELLIFERA • CORALLANIDAE
Figure 73. Alcirona insularis: A, pereopod 1. Alcirona krebsi: B3 d\ C, maxilla 1; D,
pereopod 1.
hensile, pereopods 4—7 ambulatory. All rami of pleopods bearing marginal
setae. Pleotelson often with characteristic spination and tubcrculation; lat­
eral margins often with incision.
REMARKS Excorallana subtilis (Hansen, 1890) was described from St.
Thomas, U.S. Virgin Islands, based on a specimen undergoing ecdysis; the
true identity of this species remains uncertain.
In the key, two species have been included which are not illustrated. These
are E. mexicana Richardson, 1905, from the Gulf of Mexico, and E. delaneyi