340 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.21 



the Pacific occurrence of Leurocyclus tuberculosus might be doubted in 

 view of the two Jobert specimens from Rio de Janeiro, reported by 

 A. Milne Edwards and Bouvier. The figure of Brito Capello leaves no 

 doubt but that the hairy propodi of the last three pairs of ambulatory 

 legs, mentioned by Bouvier as distinguishing the Jobert specimens from 

 the type of Milne Edwards and Lucas, are present in Chilean as well 

 as Brazilian examples. If the two are to be separated, it must be on some 

 other character, perhaps the male first pleopod. Unfortunately, specimens 

 are not available on this side of the Atlantic for such a study. 



Subfamily MAJINAE 



Maiinae Alcock, 1895, pp. 161, 166, and 236 (part: the Maioida). 

 Majinae, sensu restr., Balss, 1929, pp. 16, 20. 



Orbit formed (1) by a supraocular hood, the posteroexternal angle 

 of which is often produced as a spine, (2) by a sharp postocular tooth, 

 and (3) by a spine intercalated between the two. Basal antennal [article] 

 broad, but not specially produced to form a floor to the orbit; usually 

 armed at both its anterior angles with a strong spine. (Alcock) 



Pleopod 1 like that in the preceding subfamily [Pisinae Alcock]. 

 Pleopod 2 short. (Stephensen) 



The subfamily Majinae, as conceived by Alcock, contained three 

 subdivisions termed by him alliances: the Maioida, the Stenocionopoida, 

 and the Periceroida. The Stenocionopoida were withdrawn by Balss 

 (1929) as a separate subfamily, renamed the Ophthalmiinae to conform 

 with the substitution by Rathbun (1897) of Ophthalmias for Stenocion- 

 ops. At the same time, the Maioida were established as the restricted 

 subfamily Majinae, while the Periceroida were divided into two sub- 

 families, the Mithracinae and the Macrocoelominae. The Majinae, sens, 

 restr., and the Ophthalmiinae are here recognized as Balss conceived 

 them ; however, the Mithracinae in its limited sense and the Macrocoelo- 

 minae as such are not, for reasons explained elsewhere. Instead, the 

 Periceroida of Alcock are retained as a natural group, and to them is 

 applied the name Mithracinae, rather than the confusing Stenociono- 

 pinae, also avoided by Balss, Stenocionops having been substituted by 

 Rathbun (1897) for Pericera. Thus the present number of subfamilies 

 recognized, as well as their basic composition, is the same as that of 

 alliances recognized by Alcock, plus or minus a few genera transferred 

 from one to another. 



The Majinae, sens, restr., are represented in the western Atlantic 

 only by JTemnonotus and in the eastern Pacific by Maiopsis and an 



