MARINE SILVER HATCHETFISHES — SCHULTZ 645 



Color: The color pattern is shown in figure 21, p. 632. 



Range: This species is known from the Hawaiian Islands; records 

 in the literature from other areas are probably for other species. 



Remarks: In 1938 I published USNM 51593 with Albatross station 

 No. 4102, an error as far as P. nuttingi is concerned because father 

 investigation of USNM 51593 shows that this number belongs to a 

 specimen of Antigonia eos and that the correct USNM number is ac- 

 tually 51093; this lot is labeled as cotypes of P. nuttingi in Gilbert's 

 handwriting in the jar. No Albatross station number, however, was 

 found in the jar, and now it appears that when the cotypes were re- 

 turned from Stanford University, those from Albatross stations 3867, 

 3920, 4089, 4090, 4091, 4097, 4121, and 4134 were all placed in one 

 package. To each specimen is attached a small paper tag with a 

 number, perhaps corresponding to Gilbert's notes, which I have not 

 seen. Later, 2 specimens from this lot were received from the Uni- 

 versity of Iowa, and 6 were sent on exchange to the Chicago Natural 

 History Museum, a total of 29 specimens now being left. 



Polyipnus indicus, new species 



Figure 22 



Polyipnus nuttingi (non Gilbert), Norman, John Murray Expedition, 1933-34, 

 Scientific reports, vol. 7, No. 1, p. 20, 1939 (Zanzibar Area). 



Holotype: BMNH 1939.5.24.403, station 115, John Murray Ex- 

 pedition Zanzibar Area, depth 640 to 658 meters, standard length 

 47 mm. 



Paratypes: BMNH 1939.5.24.404, same data as holotype, 1 

 specimen, 38.2. USNM 179897, same data as holotype, 1 specimen, 

 46.2 mm. 



Description: Measurements made on the holotype and two para- 

 types are given in table 7, p. 638; counts made are given in table 1, 

 p. 591, and table 6, p. 636. 



Color: The color pattern is shown in figure 22, p. 632. 



Range: This species is known only from the area of! Zanzibar. 



Remarks: This species is most closely related to P. nuttingi of the 

 Hawaiian Islands region. It differs in having 011I3- 20 gill rakers, 

 whereas nuttingi has from 21 to 24, usually 22 or 23. Furthermore, 

 the distance between the anal and subcaudal groups of photophores 

 is notably greater than the width of the subcaudal photophores in 

 nuttingi but shorter in indicus, as is indicated in the following tabula- 

 tion : 



Width of subcaudal group of photophores divided into the distance between anal and subcaudal groups 

 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 



nuttingi — — — — 1 1— 4 — 2 



indicus 2 — 1 — — — — — — — 



