544 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 112 



The specimen shows some points of resemblance to L. multispinosus 

 but differs in the somewhat shorter rostrum, in the rounded apex of 

 the antennular lamina and, principally, in the relatively shorter and 

 broader telson with the fewer lateral spines, and in the long slender 

 subapical spines. Fage does not mention the form of the apical plate, 

 but in his figure there are six spinules of equal size which are longer 

 than any of those in the present specimen. 



There seems to be no doubt that this specimen represents a new 

 species; however, as it may not be fully mature and considerable 

 changes may occur with growth, naming it would be unwise until more 

 material is available. 



Lophogaster sp. B 



Figure 7 



Occukrence: Albatross station 3965, vicinity of Laysan Island, 

 Hawaii, 1 adult 9 with fully developed but empty brood sac, 27 mm. 



Description: Carapace with integument very sparsely beset with 

 minute spinules; frontal plate rather broad; rostrum long, extending 

 considerably beyond the antennular peduncle to the level of the tips 

 of the antennal scales; wings with the ventral margin less convex 

 than in other Pacific species; alar spines very long and acutely pointed, 

 inclined obliquely upward in lateral view (fig. 7,a,d). 



Antennular lamina with inner margin slightly convex, setose and 

 terminating in a short, strong tooth; anterior margin convex, its 

 apex barely extending beyond the tooth; armed with a regular row of 

 minute spinules; apophyses from dorsal surface of peduncle unequal 

 in size (fig. 76). 



Antennal scale twice as long as its greatest width, which occurs 

 at about one-fifth of its length from its base and then tapers to a 

 long acute apex; outer margin straight, armed with four teeth with 

 a trace of a fifth (fig. 7c). 



Tergal spines of the last abdominal somite small but well developed, 

 acutely pointed (fig. 7e). 



Telson less than three times as long as its greatest width; lateral 

 margins armed with three small spines on each side in addition 

 to the relatively small subapical spines; apical spines broken but 

 appear from what remains to have been long and slender; apical 

 plate not at all produced, armed with five regular spinules and two 

 plumose setae (fig. 7,e,f). 



Remarks: This specimen was referred by Ortmann (1905; 1906) to 

 L. typicus in company with a number of specimens from five other 

 stations around Hawaii (.3847, 3857, 3858, 3884, and 4101). Fage 

 (1940) founded a new species, L. hawaiensis, for these specimens, and W. 

 M. Tattersall (1951, p. 252), not having access to Fage's paper, briefly 

 referred all specimens from Hawaiian waters to Fage's species. He 



