534 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 112 



Lophogaster intermedins Hansen 



Figure 2 



Lophogaster intermedins Hansen, 1910, p. 14, figs. — W. M. Tattersall, 1922, p. 448 

 (not W. M. Tattersall, 1951, p. 20, as L. intermedins ?). 



Remarks: This species was founded by Hansen on specimens 

 captured by the Siboga Expedition in the waters of the Dutch East 

 Indies. It has unfortunately not been possible to examine the types 

 of the species. A number of specimens from the Mergui Archipelago 

 referred to L. intermedins (Tattersall, 1922, p. 448), however, agree 

 so closely with Hansen's description and figures of this species that 

 there can be little doubt as to the correctness of their identification. 

 For the purpose of comparison, a figure showing the salient features 

 of these specimens is given herewith (fig. 2.) 



Tattersall (1951, p. 20) doubtfully referred an adult ovigerous 

 female from station 4944 off the south east of Japan to L. intermedium 

 and pointed out at the same time its close resemblance to other 

 specimens from Japanese waters. He added that it might be merely 

 a variety of his new species L. japonicus (=L. pacijicus Fage). With 

 this suggestion I concur, and I discuss characters and individual 

 differences below under L. pacijicus (fig. 3). I have examined a 

 single specimen from station 4101 off Kauai, Hawaiian Islands, and 

 find that it conforms very closely with the description and figures 

 of L. hawaiensis (especially in the form of the antennular lamina). 

 I suggest that it should be referred to this species. If I am correct in 

 my interpretation of the identity of these two specimens, it will mean 

 that L. intermedins is not represented in the collections of the U.S. 

 National Museum. 



Lophogaster pacifieus Fage 



Figure 3 



Lophogaster pacifieus Fage, 1942, p. 29, figs. 



Lophogaster typicus, Ortmann, 1906, p. 25 (Japanese specimens only). 

 Lophogaster japonicus W. M. Tattersall, 1951, p. 19, figs. 16, 2a. 

 Lophogaster intermedins ? W. M. Tattersall, 1951, p. 20, fig. lc. 



Remarks: Fage (1942, p. 29) founded the species L. pacifieus on 

 two nearly adult female specimens captured by the Dana in the 

 China Seas to the north of Formosa. He mentioned that specimens 

 from Japanese waters referred by Ortmann (1906) to L. typicus 

 agreed in all respects with this new species except that there were 

 fewer teeth arming the outer margin of the antennal scale — only 

 three compared with the five to sLx in his types of pacijicus. 



One of the most outstanding characters of both pacijicus and typicus 

 is the presence of thickly scattered coarse tubercles on the carapace. 

 In addition there is in typicus a strong, very noticeable, forwardly 



