GONZALES & GOSLINER: NEW SPECIES OF PHILINE FROM THE INDO-PACIFIC 367 
Reproductive System (Figs. 6F, 7D-E): The reproductive system is fully mature. The arrange¬ 
ment of reproductive organs is essentially monaulic (as discussed by Gosliner 1994) but with a sin¬ 
gle branch of the heimaphroditic duct to the albumen and membrane glands (Fig. 7D). From the 
large ovotestis, which is intermingled with the digestive gland, emerges the wide, convoluted 
ampulla. The ampulla narrows and appears to have a short proximal receptaculum seminis at the 
point where the heimaphroditic duct again widens and curves around the large distal receptaculum 
seminis. The duct again narrows at the point where it enters the albumen and membrane glands. 
The albumen and membrane glands are small. The larger mucous gland is bilobed with a large pri- 
maiy lobe and small secondary one. After branching to the female glands, the hennaphroditic duct 
is elongate and narrow and extends to tlie genital aperture where it then joins the short duct of the 
large, pyrifomi distal receptaculumseminis and continues to the genital atrium, where it joins the 
elongate duct of the bursa copulatrix. The bursa is large and spherical. Its duct is wide throughout 
its length but is widest at the genital atrium. There are no secondary bursae evident in the speci¬ 
men dissected. From the genital atrium the open, ciliated spenn groove leads to the cephalic penis. 
The penis (Fig. 6F) consists of a broad penial sac and an elongate, highly branched, posteriorly 
directed prostate gland and associated ducts that characterize members of the Philine aperta clade. 
There is a lai'ge, wide retractor muscle situated on the ventral surface of the penis. Within the penial 
sac a lai'ge bulbous penial papilla with a lai'ge lateral flange that terminates in a cuwed area that 
has a series of comb-like denticles along its outer surface (Fig. 7E). 
Remarks, — This species is most morphologically similar to Philine auriformis Suter, 1909, 
and P fenestra Price, Gosliner and Valdes, 2011. All tliree of these species have three equal-sized 
gizzard plates with an elongate central bar, flanked by a pah of depressions. The posterior shield 
of P. auriformis has widely distinct lobes that are widely separated by a distinct notch that is not 
evident in either P dentiphallus or P fenestra. The shell of P dentiphallus is wide and largely 
smooth as in 7^ auriformis, whereas that of P fenestra is narrower, with punctate sculpture tlii'ough- 
out. All tliree species have radular teeth with rows of denticulate inner lateral teeth and rows of sin¬ 
gle outer lateral teeth. In P fenestra (Price et al, 2011), the inner lateral tooth has fewer denticles 
(35-50) that are more widely spaced than those of F! dentiphallus, which has about 64 denticles. 
In P. auriformis there are 30-50 denticles (Gosliner 1995). The outer lateral teeth of P fenestra are 
narrow but almost as elongate as the inner lateral teeth, whereas in P auriformis and P dentiphal¬ 
lus the outer laterals are much shorter than the inner laterals. The gizzard plates of P dentiphallus 
and P. auriformis have a narrow bar and two relatively lateral depressions that occupy about a third 
of the length of the plate, whereas in P fenestra the central bar is much broader and the depressions 
are narrower and far more elongate. In both P auriformis and P fenestra the penial papilla is sim¬ 
ple and hammer-shaped, whereas it is bulbous with a lateral denticulate flange in P. dentiphallus. 
Philine verdensis Gonzales and Gosliner, sp. nov. 
Figures IF, 8-9 
Material Examined. — Holotype: CASIZ 192089, ST HEPD 21, beam trawl in muddy 
sand, 132-172 m depth, western end of Verde Island Passage, off northwest tip of Lubang Island, 
Batangas Province, Luzon, Philippines, 13.888167°N, 120.1075°E, 1 June 2011, Hearst Expedition 
Deep Sea Team. Paratype: dissected, CASIZ 189338, ST HEPD 21, beam trawl in muddy sand, 
132-172 m depth, western end of Verde Island Passage, off northwest tip of Lubang Island, Batan¬ 
gas Province, Luzon, Philippines, 13.888167°N, 120.1075°E, 1 June 2011, Hearst Expedition Deep 
Sea Team. 
