Table 35. Some Characters Reported as Useful in Distinguishing Between Lam- 

 panyctus tenuiformis and l. festivus from the indian and atlantic 

 Oceans Compared with a Form Provisionally Identified as L. tenuiformis 

 FROM THE Pacific Ocean. 



L. tenuiformis* 

 (Indian Ocean) 



A. 18 



P. 14 

 A06 + 7 



L. festivus** 



(Atlantic Ocean) 



A. 19-20 



P. 16(15-17) 



AO 7 -I- 8-9 



L. tenuiformis (?) 



(Pacific Ocean) 



A. 17-18 



P. 14(13-15) 



A06 + 7 



6 scales in infracaudal 

 gland, filling four-fifths of 

 infracaudal space 



VO series in a straight 

 line 



AOa series in a straight 



line 

 SAOi and SAO2 on same 



level 

 SAOi before vertical 



from VO3 

 PO4 slightly above level 



of lower end of Pectoral 



base 

 Line SAO, ;. passes 



slightly below pectoral 



base 



8 (7-10) scales in infracaudal 

 gland, filling all the 

 space 



VO series curved 



AOa series slightly 



curved 

 SAOi below level of SAO2 



SAOi directly over VO3 



PO4 about on level of 



upper end of pectoral 



base 

 Line SAO|.; passes 



slightly above pectoral 



base 



5-8 scales in infracaudal gland, 

 filling two-thirds to all the 

 space 



VO series usually curved, 

 often straight in specimens 

 of less than 50 mm 



AOa series slightly 

 curved 



SAOi on or below level 

 ofSAOi 



SAOi before vertical 

 from VO3 



PO4 slightly above level 

 of lower end of pectoral 

 base 



Line SAO,.j passes var- 

 iously near upper and 

 lower ends of pectoral 

 base 



*Data from one specimen (85 mm) reported by Nafpaktitis and Nafpaktitis, 1969. 

 **Data from holotype (101 mm) reported by Nafpaktitis and Nafpaktitis, 1969, and from three specimens (35-68 mm) 

 reported by Bolin, 1959. 



the Pacific Ocean. L. steinbecki is herein regarded as a valid species; L. bensoni is not dis- 

 cussed. 



The following key will be of aid in separating L. steinbecki (from the eastern Pacific 

 Ocean) from L. tenuiformis and L. festivus. 



la. A line through SAO, 2 passes through or near VLO and/or PLO. SAO, over VOn and well 

 above level of SAO2. VO and AOa series slightly but distinctly curved, often nearly 

 straight in specimens of 25 mm or less L. steinbecki 



lb. A line through SAOi. 2 passes variously near upper or lower ends of pectoral base 2 



2a. VO and AOa series not curved. SAOi slightly below level of SAO2 and directly over VO3. A 

 line through SAO, .2 passes near lower end of pectoral base L. tenuiformis 



2b. VO and AOa series slightly but distinctly curved. SAO, about on level of SAO^ and before 

 vertical from VO.j. A line through SAO ,.2 passes through or slightly above upper end of 

 pectoral base L. festivus 



182 



