NEW BARNACLE GENUS—UTINOMI 463 
appendages is undoubtedly obvious. In all known species of Bacca- 
laureus (at least 10 at present), the thoracic appendages are uniramous 
and unsegmented and vary from three to six pairs. In the genus 
Laura (only one species), however, the six thoracic appendages are 
uniramous and faintly segmented(?). In Ascothorax ophioctenis 
Djakonov of the Synagogidae, the six pairs of thoracic appendages 
are biramous and two-segmented (and with two-articulate pedicel) 
(Stephensen, 1935). In the more primitive(?) genus Synagoga para- 
sitic on the Antipatharia and Crinoidea, the six pairs of thoracic 
appendages are distinctly biramous, segmented, and very much 
setigerous (Norman, 1913; Okada, 1926, 1938). It follows then that 
the genus Gorgonolaureus here described should be included in the 
family Lauridae which has certain affinities with the Synagogidae, 
especially Ascothoraz. 
Finally, it is interesting to note that this is the first recorded occur- 
rence of the Ascothoracida in the group of Octocorallia and is the 
smallest of the Ascothoracida. 
References 
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1948a. Undersékningar 6ver Oresund XXXIII. On the larval develop- 
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