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THE CORAL TRIANGLE: HEARST BIODIVERSITY EXPEDITION 
Kirby’s Rock dive site. 13.69202°N., 120.84308°E. HEP-37. Collector: Michelle Weber, 6 May 
2011; CASIZ 187689, 3 whole, 1 dissected specimens in 95%EtOH. Loeality: Philippines, Batan- 
gas Province, Maricaban Island, Devil’s Point dive site. 13.65058°N., 120.84162°E. Attached to 
Acabaria sp. HEP-90 Depth: 21 meters Collector: Robert Van Syoc, 20 May 2011; CASIZ 187718, 
3 whole, 1 dissected specimens in 95% EtOH. Locality: Philippines, Batangas Province, Marica¬ 
ban Island, Layag Layag dive site, 13.69178° N., 120.84130° E. Attaehed to Acabaria sp. HEP-91 
Depth: 12 meters. Collector: Robert Van Syoc, 20 May 2011; CASIZ 187720, 6 whole, 2 dissect¬ 
ed in 95% EtOH. Loeality: Philippines, Batangas Province, Marieaban Island, Devil’s Point dive 
site. 13.65092°N., 120.84137°E. Attached to Acabaria sp. HEP-59. Depth: 15 meters Collector: 
Robert Van Syoe, 13 May 2011; CASIZ 187721, 6 whole, 2 dissected speeimens in 95% EtOH. 
Locality: Philippines, Batangas Province, Maricaban Island, Devil’s Point dive site. 13.65084°N, 
120.84145°E. Attached to Acabaria sp. HEP-41 Depth: 24 meters. Collector: Robert Van Syoc, 7 
May 2011; CASIZ 187765, 6 whole, 2 disseeted in 95% EtOH, SEM stub with opercular plates, 
microslide with cirri and mouthparts. Locality; Philippines, Batangas Province, Balayan Bay, 
Ligpo Island. 13.81964°N, 120.90078°E. Attached to Melithaea sp. HEP-18 Colleetor: Robert Van 
Syoc, 2 May 2011; CASIZ 187766, 3 whole, 3 dissected specimens in 95% EtOH. Locality: Philip¬ 
pines, Batangas Province, Maricaban Island, Kirby’s Rock dive site. 13.69202°N, 120.84308°E. 
HEP-37. Collector: Michelle Weber, 6 May 2011; CASIZ 187768,10 whole, 3 dissected specimens 
in 95% EtOH. Loeality: Philippines, Batangas Province, Balayan Bay, “Koala” dive site. 
13.71656°N, 120.87217°E. Attached io Acabaria sp. HEP-14 Collector: Robert Van Syoc, 1 May 
2011. Other material: CASIZ 187769, 17 whole, 3 dissected specimens in 95% EtOH. Locality: 
Philippines, Batangas Provinee, Maricaban Island, Devil’s Point dive site. 13.65092°N., 
120.84137°E. HEP-77. Depth: 32 meters. Colleetor: Robert Van Syoc, 17 May 2011; CASIZ 
189827, 2 whole, 3 disseeted speeimens in 95% EtOH. Locality: Philippines, Batangas Provinee, 
Marieaban Island, “Bethlehem” dive site. Depth: 5-21 meters. Collector: Gary Williams, 21 April 
1997. 
Diagnosis. — Shell wall and basis elongated along axis of host; basis with elongated “boat- 
shape”, upturned laterally and extended along host axis to sharp edges at earinal and rostral ends, 
about same depth along entire length with small variations, not tapering toward axis from center to 
tips; Carina sloping steeply from summit, then gradually to basal margin, not in eontact with host 
axis; rostmm elongated, sloping gradually from summit to basal margin, not in contact with host 
axis; latus nearly equilateral triangle-shape; carino-latus about same width from summit to basal 
margin; summit of shell wall even, radii parietal with diametrie growth, not jagged. Seutum slight¬ 
ly wider than high. 
Description.— Shell wall and basis elongated along axis of host; basis with elongated “boat- 
shape”, upturned laterally and extended into points at ends, about same depth along entire length 
with small variations, not tapering from eenter to tips; earina sloping steeply from summit, then 
gradually to basal margin, not in contact with host axis; rostmm elongated, sloping gradually from 
summit to basal margin, not in eontaet with host axis; latus nearly equilateral friangle-shape; eari- 
no-latus about same width from summit to basal margin. Basis and parietes with longitudinal tubes, 
seeondarily filled. Summit of shell wall even, radii parietal with diametrie growth, not jagged. Seu¬ 
tum width greater than height, apex acute, articular ridge extending over y4 length tergal margin, 
basal margin curved, steep slope to depressor musele pit at tergal/artieular margin, articular ridge 
fairly to moderately convex, adductor muscle pit present, inner surface pebbled, tergal and occlu- 
dent margins fairly straight. Tergum height slightly greater than width; apex acute; spur broad, fur¬ 
row shallow, spur sloping downward to rounded end near scutal margin; basiscutal angle shallow, 
obtuse; inner surfaee pebbled; 3-6 depressor muscle crests; basal margin eoncave, earinal margin 
