288 BULLETIN 180, XJNITED STATES NATIONAL MUSEUM 



115394, Tutuila, Fagasa Bay, rock pools, June 5, 1939, 7 specimens. 

 115393, Swains Island reef. May 3-9, 1939, 10 specimens. 

 115392, Hull Island, reef, July 12-15, 1939, 2 specimens. 



115396, Tutuila Island, reef at Alofau, June 3, 1939, 1 specimen. 



115395, Enderbury Island, reef. May 15-19, 1939, 1 specimen. 



One specimen counted has 80 dorsal rays; 64 anal; 21 pectoral; 

 scale rows 107 ; gill rakers 2 + 1 + 12. 



Several of the males have a remarkable copulatory organ, con- 

 sisting of a long spine curved forward, the base of which is attached 

 to a saclike gland; a duct leads from the testes to this gland; sur- 

 rounding the spine anteriorly and laterally is a cartilaginous copu- 

 latory holding organ, which consists of a few rather complicated 

 bony units. 



Several of the females are gravid ; one contained 108 embryos and 

 numerous eggs in the tip of one wing of the ovary-uterus not devel- 

 oping. These embryos were eyed and about 2 mm. long. 



Genus BROTULA Cuvier 



Brotula Cxjviee, R&gne animal, ed. 2, vol. 2, p. 335, 1829. (Type, Enchelyopus 

 harhatus Bloch and Schneidei*.) 



BROTULA MULLERI Giiiither 



Brotula mulleri Gijnther, Journ. Mus. Godeffroy, vol. 3, p. 334, 1909. 

 115401, Hull Island reef, July 12-15, 1939, 1 specimen. 



With some uncertainty I identify this one specimen, 58 mm. in 

 total length, as B. mulleri. I count 123 dorsal rays and 103 anal 

 rays ; the greatest depth of the body is II/2 in the head and 7% times 

 in the total length ; the head is contained 4% times in the total length ; 

 length of pectoral i/^ head; eye equal to snout; interorbital space 

 about y2 eye; the maxillary reaches to under rear edge of pupil; 

 the dorsal and anal fins are brownish black in alcohol with the 

 outer margin white and the basal part of the fin paler ; on the cheek 

 back of the eye are 15 to 19 pigment spots ; numerous pigment spots 

 are scattered along the body under the anterior part of the dorsal 

 fin and larger ones on the side of the body posteriorly, these in two 

 or three irregular rows. 



Order XENOPTERYGII 

 Family GOBIESOCIDAE 



Genus ASPASMAGASTER Waite 



Crepidogaster GiJNXHEK, Catalogue of the fishes of the British Museum, vol. 3, 

 p. 507, 1861. (Type, Crejndogaster tasmanicnsis Giinther; name preoccu- 

 pied, replaced by Anpasmaga^ter Waite, Rec. Austr. Mus., vol. 4, p. 315, 

 1907.) 



