CERATIOID ANGLERFISHES OF THE PHILIPPINE ARCHIPELAGO, 

 WITH DESCRIPTIONS OF FIVE NEW SPECIES ^ 



Theodore W. Pietsch^ and Jeffrey A. Seigel^ 



ABSTRACT 



Ceratioid anglerfishes of the Philippine Archipelago, an area bounded by the islands of the Philippines 

 to the north, Malaysia and Sumatra to the west, and New Guinea to the east, represent 10 of the 11 

 ceratioid families, 22 genera and 42 species, 5 species of which are newly described forms of the genus 

 Oneirodes (Oneirodidae). The vast bulk of this material has recently been provided by midwater 

 collections made by the Alpha Helix during the 1975 Southeast Asian Bioluminescence Expedition. All 

 known records of ceratioids are listed with keys to families, genera, and species represented in the area. 

 Revised and supplemental diagnostic and descriptive data as well as notes on geographic distribution 

 are also provided. 



Our knowledge of the ceratioid anglerfish fauna of 

 the Philippine Archipelago, an area bounded by 

 the islands of the Philippines to the north, 

 Malaysia and Sumatra to the west, and New 

 Guinea to the east, has recently been broadly ex- 

 panded by midwater collections made by the RV 

 Alpha Helix during the 1975 Southeast Asian 

 Bioluminescence Expedition. This collecting ef- 

 fort was the first major ichthyological survey of 

 this part of the world since the historic cruises of 

 the United States Fisheries steamer Albatross in 

 1907-09, and the Danish RV Dana in 1929. The 

 Ceratioidei are now represented by 10 of the 11 

 families, 22 genera, and 42 species, 5 species of 

 which are newly described forms of the genus 

 Oneirodes (Oneirodidae). All known records of 

 ceratioids from this area are listed below with 

 keys to families, genera, and species. Revised and 

 supplemental diagnostic and descriptive data as 

 well as notes on geographic distribution are also 

 provided. 



METHODS AND MATERIALS 



Standard lengths (SL) are used throughout. 

 Methods for taking counts and measurements, 

 and terminology used in describing escal mor- 

 phology follow Pietsch (1974a, fig. 60). Terminol- 

 ogy used in describing the various parts of the 



'Contribution No. 540 from the College of Fisheries, Univer- 

 sity of Washington, Seattle, WA 98195. 



^College of Fisheries, University of Washington, Seattle, WA 

 98195. 



'Section of Ichthyology, Natural History Museum of Los 

 Angeles County Los Angeles, CA 90007. 



Manuscript approved October 1979. 

 FISHERY BULLETIN: VOL. 78, NO. 2. 1980. 



angling apparatus follows Bradbury (1967). Defi- 

 nitions of terms used for the different stages of 

 development follow Bertelsen (1951). Locality 

 data for Alpha Helix stations that yielded 

 ceratioid material are listed in Appendix 1. Alpha 

 Helix collections were made with a rectangular 

 midwater trawl of 8 m^ mouth area (RMT-8) that 

 was equipped with an opening and closing device. 

 This gear is more fully described elsewhere 

 (Clarke 1969; Baker et al. 1973; Hopkins et al. 

 1973). All Alpha Helix material was deposited in 

 the Natural History Museum of Los Angeles 

 County (LACM). Material from other sources is 

 catalogued in the following institutions: Austra- 

 lian Museum, Sydney (AMS), Scripps Institution 

 of Oceanography, La JoUa (SIO), National 

 Museum of Natural History, Washington, D.C. 

 (USNM), and the Zoological Museum, University 

 of Copenhagen (ZMUC). Specimens are females 

 unless otherwise stated. 



KEY TO FEMALES OF THE FAMILIES OF 

 SOUTHEAST ASIAN CERATIOIDEI 



lA. No distal bulb, illicium tipped with fila- 

 ments; longest rays of dorsal and anal fin 

 >60'7c of SL Caulophrynidae 



IB. A bulbose light organ on tip of illicum; 

 longest rays of dorsal and anal fin much 

 <60% SL 2 



2 A. More than 11 dorsal fin rays 



Melanocetidae 



2B. Less than 11 dorsal fin rays 3 



3A. Two or three caruncles on back; cleft of 

 mouth vertical to very oblique . Ceratiidae 



379 



