58 UNITED STATES NATIONAL MUSEUM BULLETIN 296 



The male appears typical in general aspect. A penis is present. 

 The body bears fine annular striations but no plates or hairs. One male 

 had a peculiar lobe projecting from the body which appeared to be 

 stuck to the body of the female (sketched in fig. lOf). No long stalk 

 was found between the body and antennules in the two males seen, 

 as is found in L. spinatus. 



Relationship: L. spinatus, the most cosmopoUtan established 

 species, seems the nearest relative to this species. Its relatively wide 

 aperture, paired hooks, and toothy Ups are similar. The posterior 

 single cone is in no wise articulated, being, therefore, much different 

 from L. spinatus. The unpaired nature of this cone may well not be 

 important, e.g., the other member of the pair may not have developed 

 yet. Kochlorine hamata, however, is very constant in having a single 

 hook on one side only, and therefore this might be a good characteristic. 



Aurivillius' two species, described from the southwest Pacific, have 

 a shorter aperture, as already mentioned, and also different apertural 

 armament. L. hicornis bears two pairs of bristle-bearing conical 

 processes, while L. ampulla bears two anchor-hooks and two jointed 

 feelers. His notation that the caudal appendage is three- and four- 

 jointed in the two species, respectively, is probably erroneous. His 

 two figures are much different from this species. 



Lithoglyptes wilsonif new species 



FlQUBE 11 



Diagnosis: Lithoglyptes without orificial knob; one pair of long, 

 thin, opercular spines curved dorsally; opercular plates with large 

 bifid teeth; no lateral bar. Male antennules with internal tube. 



Etymology: Named for Peter T. Wilson, Fisheries Biologist of 

 Trust Territory of the Pacific Islands, at Koror, who assisted me in 

 many ways. 



Distribution: Fifty-four specimens from Turbo lajonkairi, Wake 

 Island, collected in July- August 1923 by D. Thaanum, from the 

 Bemice P. Bishop Museum shell 66541. In association with about 115 

 specimens of a new species of Cryptophialus (see page 104). Three 

 specimens from coral from Koror, Palau, Caroline Islands. Sixty- 

 seven specimens from Heliopora sp. from west of Ulul Island, Namonu- 

 ito Atoll, 15-60 feet deep, collected by William A. Newman on the 

 Carmarsel Expedition. This is the first record in a blue coral. The 

 barnacle in 80-percent alcohol is colorless. 



Type-material: Holotype: BPB catalog number B466, from Wake 

 Island. Paratypes: SFSC, USNM. 



