294 Memoir Sears Foundation for Marine Research 



4b. A labial furrow on lower jaw as well as on upper. 



5a. Origin of ist dorsal over inner corner of pectoral when latter is laid 

 back, or a little anterior to it. 



6a. Lower labial furrow nearly or quite as long as upper 5 distance 

 from tip of 2nd dorsal to upper precaudal pit only % to % as 

 long as horizontal diameter of eye. vagatus Garman, 1 9 1 3. 



Zanzibar. 



6b. Upper labial furrow considerably longer than lower; distance 

 from tip of 2nd dorsal to upper precaudal pit longer than hori- 

 zontal diameter of eye. 



7a. Upper labial furrow only about V2 to % as long as hori- 

 zontal diameter of eye. 



terrae-novae Richardson, 1836, p. 295.° 

 7b. Upper labial furrow as long as horizontal diameter of eye, 

 or a little longer. 



8a. Distance from tip of 2nd dorsal to upper precaudal pit 

 only about as long as horizontal diameter of eye ; upper 

 labial furrow about 1V3 times as long as horizontal 

 diameter of eyej lower furrow only about V2 as long 

 as upper. longurio Jordan and Gilbert, 1882. 



Eastern Pacific, Mexico to Panama. 

 8b. Distance from tip of 2nd dorsal to upper precaudal pit 

 about I V2 times as long as horizontal diameter of eye; 

 upper labial furrow only about as long as diameter of 

 eye; lower furrow about % as long as upper. 



intermedius Ga.rma.n, 191 3. 

 Philippines, East Indies.* 

 5b. Origin of ist dorsal a little posterior to inner corner of pectoral when 

 latter is laid back. longmani Ogilby, 1 9 1 2. 



Australia.* 



3b. Origin of 2nd dorsal over rear end of base of anal. 



walbeehmi^lt&k&T, 1856. 

 Indian Ocean south to Natal, 

 Malaysian region, southern Chi- 

 na, Formosa, Japan.* 



5. Including lalandii Muller and Henle, 1841. 



4. Intermedius, longmani and <walbeehmi resemble one another so closely that it is doubtful whether they actually 

 represent more than one rather variable species. We have studied the type specimens of intermedius. The speci- 

 mens recorded by Garman (Mem. Harv. Mus. comp. Zool., 36, 1913: 112) as tualbeehmi show the diagnostic 

 characters of sorrakowah, with a specimen of which (identified by Garman) we have compared them. We have 

 also examined the type of vagatus, specimens of longurio and the extensive series of terrae-novae listed on p. 295. 



