Lampanyctus macdonaldi 



(Goode and Bean, 1896) 



Fig. 187 — Lampanyctus macdonaldi , female, 117.0 mm. 



Description 



D. 14-15; A. 18; P. 12 (11); AO 7 (6-8) + 7 (6-8), total 14 (13-15); gill rakers 8 (9) + 1 -I- 17 

 (16-18), total 26 (25-27); vertebrae 36 (seven specimens). 



PLO below lateral line about a third the distance to pectoral origin; VLO usually slightly 

 nearer lateral line than to pelvic origin and slightly before vertical from that origin. Line 

 through SA0|.2 and VLO passes through or somewhat below PLO; SAOi slightly behind 

 vertical from VO., and usually slightly above level of SAO^. AOa series evenly spaced and 

 occasionally very slightly curved, or AOa, slightly depressed. No AOp over anal base. Pre and 

 AOp often continuous; upper Pre at end of lateral line and distant from closely spaced first 3. 

 The luminous scale before adipose base is weakly developed and easily lost; 2 to 4 weak 

 luminous scales in supracaudal gland, 7 to 9 in infracaudal, the latter usually extending to 

 near base of last anal ray. 



Size: To 117 mm in eastern Pacific; Bolin (1959) listed 135 mm for a specimen from the 

 North Atlantic. 



Least depth of capture: To 1200 m at night off Chile. Bolin reported captures with 1000 m 

 of wire out in the North Atlantic. 



Distribution: Probably circumglobal in southern seas. It is also known from the North 

 Atlantic Ocean, but has not been reported from the South Atlantic. In the South Pacific Ocean, 

 it is known from off Valparaiso, Chile (Craddock and Mead, 19701, to Kermedec Islands and 

 southeast of South Island, New Zealand. I have seen one specimen (115 mm) from about 42° S, 

 71° E in the Indian Ocean. 

 Discussion 



L. macdonaldi is superficially similar to L. iselinoides (see above) but differs in having no 

 secondary body photophores and in having about 10 more total gill rakers, 26 (25-27) vs 16 

 (15-18). 



At present there is no distributional evidence to link the North Atlantic population of L. 

 macdonaldi (reported by Bolin, 1959) with that of the southern oceans. Data from the seven 

 specimens available to me from the South Pacific agree well with that given by Bolin, except, 

 perhaps, in numbers ofgill rakers; Bolin reported 7 (6-8) + 1 + 16 (14-18), total 24 (21-26) 

 (about 2 fewer rakers). 



Bolinichthys Paxton, 1972 



Body moderately robust, head rather short and deep. PO.i slightly, PO^ highly, elevated, 

 the remaining 3 in more or less straight, descending series. SAO series moderately angulate. 3 

 Pre, first 2 near ventral caudal rays, third above lateral line and well behind vertical from 

 second. PLO, SAO,,, upper Pol, and Prc;, above lateral line. Crescent of whitish tissue on 



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