VAN SYOC ET AL.: SEVEN NEW BARNACLES FROM THE PHILIPPINES 
205 
Figure 27. Acasta vipensis, mouth parts of paratypes. A labmm (CASIZ 185885) B mandible (CASIZ 185886) C max¬ 
illa I (CASIZ 185886) D maxilla II (CASIZ 185886) E mandibular palp (CASIZ 185886). Scale bar = 200pm. 
not be set in from inferior angle; inferior, superior, and eutting edges with long fine setae. 2^^ Max¬ 
illa small, elongate; bi-lobed; apieal setae long. Palp oblong, tapered; superior edge eonvex, oeca- 
sionally angled; long setae on superior margin and distally. Cirms I anterior ramus long, tapered, 
at least twice as long as posterior ramus; posterior ramus short thick; rami with long fine setae; rami 
curved in opposite directions, inferior margins facing. Cirrus II anterior ramus about Vs longer than 
posterior ramus; rami thick; long fine setae. Cirrus III anterior and posterior rami thick; anterior 
ramus 1-2 segments longer than posterior; long fine setae; anterior rami with inferior margin arma¬ 
ture, spines grouped near upper segment margin. Cirrus IV rami long, tapered distally, similar 
length; inferior setae long, less dense than Cl, II, III; superior setae short and sparse; anterior rami 
with small spines on inferior margin of each segment. Cirms V similar to CVI; no armature; infe¬ 
rior setae long, superior setae short and sparse; rami close to equal in length. Cirrus VI similar to 
CV; inferior setae long, superior setae short and sparse; rami close to equal in length. Penis long; 
sparsely covered with short fine setae, difficult to tell if basal spine is present. All cirral setae sim¬ 
ple. 
Table 7. Cirral formula for Acasta vipensis sp. nov. Segment counts from paratypes, CASIZ 
185885 and 185883A. 
Cirms 
I 
II 
III 
IV 
V 
VI 
Anterior ramus 
5-6 
7-8 
9-12 
16 
24-26 
25-26 
Posterior ramus 
12-13 
10-12 
12-13 
20 
24-26 
25-26 
