GONZALES & GOSLINER: NEW SPECIES OF PHILINE FROM THE INDO-PACIFIC 375 
ulum. The duct widens as it enters the common genital atrium and meets the elongate duct of the 
bursa copulatrix. The bursa is relatively small and oblong. The genital atrium is relatively wide and 
somewhat muscular and opens into the ciliated spenn groove. The albumen and membrane glands 
are small. The larger mucous gland is bilobed with a large primary lobe and small secondary one. 
From the genital atrium the open, ciliated sperm groove leads to the cephalic penis. The penis (Fig. 
IID) consists of a narrow penial sac and an elongate, branched, posteriorly directed prostate gland 
and associated ducts that characterize members of the Philine aperta clade. There is a large, wide 
retractor muscle situated on the ventral surface of the penis. Within the penial sac a small, elongate 
penial papilla with a narrow hammer-shaped papilla that is rounded apically. Below the papilla is 
a triangular, acutely pointed lobe 
Remarks. — By virture of its gizzard plates with pores and complex penis and prostate, this 
species is clearly a member of the Philine aperta complex. It is the only member of this complex 
that has paired gizzard plates with only a single pore. The only other member of this complex with 
a narrow, elongate body and nan'ow parapodia is P elegans Bergh, 1905 (Price et al. 2011, fig. ID). 
This species differs markedly from P pittmani in its internal anatomy. The gizzard plates of 
P. elegans have a series elongate fibriate extensions along the lateral margins of the plate (Price et 
al. 2011, figs. 16A-B). Additionally all gizzard plates of P. elegans have two pores, while in 
P. pittmani, the two paired gizzard plates have only a single pore. Also the surface of the gizzard 
plates of P. elegans is tuberculate, while it is smooth m P pittmani. The radula of P. elegans also 
lacks outer lateral teeth but has far fewer denticles (33) than do those of E! pittmani (52). The penial 
papilla of P pittmani has a relatively small penial papilla with equal lobes of the hammer-shaped 
papilla, while P elegans has a much larger papilla with markedly unequal lobes. Additionally, 
P. pittmani has an acutely pointed appendage below the papilla that is absent in P elegans. 
Philine multipapillata Gonzales and Gosliner, sp. nov. 
Figures 12-13 
Material Examined.— Holotype: dissected, CASIZ 172841, ST T2, trawl in coarse sand 
and mud, 150 m depth, south of Alona Kew, Panglao, Bohol, Philippines, 9°32.4’N, 123°47.8’E, 
31 May 2004, Panglao Expedition team. 
Geographical Distribution. — Thus far, this species is known only from the Visayas region 
of the Philippines from the coast of Bohol. 
Etymology.— The name multipapillata refers numerous conical papillae that ornament the 
surface of the penial papilla. 
Natural History.— This species has been found in sand and mud in 150 m depth. No prey 
items were found in the gizzard and no other information about its feeding ecology is known. 
Description. — External morphology: The living animals have not been observed, but the pre¬ 
served holotype (Fig. 13A) is 9 mm in length 4 mm wide. The cephalic shield is longer that the pos¬ 
terior shield and the parapodia are short and narrow, barely covering the cephalic and posterior 
shields. The cephalic shield is not indented posteriorly and is blunt and slightly curved. The poste¬ 
rior shield is slightly bilobed posteriorly. The body color of the preserved animal is uniformly 
white. The posterior shield and is not indented posteriorly. The gill is simply plicate consisting of 
ten primary folds and is situated ventrally on the right posterior end of the animal. 
Shell. The shell was badly fragmented during collection in the trawl and is not illustrated here. 
It appears that it was quite broad with a relatively low profile, where it occupies the majority of the 
posterior shield. The shell lacks sculpture but evidence of growth lines can be found on the remain¬ 
ing fragments. 
