168 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 9 



Family Antcnnariidae 



Antennarius ziesenhennei, new species 

 Plate 23, fig. 7 



Holotype.—AHF no. 917. 



Type locality. — Station 796-38, Sulivan Bay, James Island, Gala- 

 pagos, collected from a tide pool, January 21, 1938, by Fred Ziesenhenne. 



Measurernents of holotype in nun. — Standard length 79, greatest 

 depth 25, head 17.5, eye 3, maxillary 10.6, snout 4, interorbital 6, length 

 of first dorsal spine 7.8, length of second dorsal spine 6.5. 



Description. — Body robust, squat, and fat, somewhat compressed 

 posteriorly, wide anteriorly. Greatest depth (at base of third dorsal 

 spine) 2 in standard length. 



Dorsal III, 12: first spine (ilicium) slender, longer than second spine, 

 its end (the "bait") expanded and divided into short fingerlike lobes. 

 When depressed, the ilicium lies in a shallow groove around the right 

 side of the base of the second spine. Second dorsal spine straight, conical, 

 wholly free; lying in a shallow groove when depressed. Third dorsal 

 spine entirely hidden beneath the skin, appearing as an obliquely pointed 

 hump. Dorsal rays moderate, covered by heavy skin except at tips. Anal 

 rays 7. Caudal 9, distal edge of fin rounded. Ventral fin with 5 short, 

 flattened rays, inserted before pectoral base. Pectoral rays 10, placed at 

 the outer end of a distinct wrist, pectoral (without wrist) 2.94 in head. 

 Skin rough, thickly covered with small, bifid spines which, in their normal, 

 mucus-covered state (as in our illustration) cannot be seen properly. 

 Maxillary, mandible, and the grooves into which the first and second 

 dorsal spines lie, when depressed, are naked. 



Head short and blunt, 2.86 in standard length. Snout short and very 

 blunt, 4.37 in head. Mouth vertical, lower jaw in advance of upper. 

 Maxillary long, posterior and deeply covered by a fold of skin. End of 

 maxillary extending backward almost to posterior margin of eye, 2.35 in 

 head. Teeth small, pointed, in narrow bands in jaws and on palatines. 

 Nostrils paired; anterior nostrils tubular, tube somewhat trumpet shaped. 

 Posterior nostrils with raised rims. Eyes moderate, 5.8 in head. 



The body color of the living fish was uniform grayish white, with a 

 few, minute, widely scattered, blackish spots, the largest almost equal to 

 pupil of eye. Fins of same color as body, slightly paler at tips of rays. 

 The color has not changed appreciably in alcohol. 



Cojnparisons. — The grayish white color distinguishes A. ziesenhennei 

 from the other Eastern Pacific species, which are for the most part pre- 

 dominantly patterned in black, brown, or orange. The structure of the 

 bait differs in this species, being composed of numerous fingerlike lobes 



