SOME NAMES DISENTANGLED 119 



are thickly covered with hair. There is, according to Sars, 

 a possibility, which, however, S. I. Smith thinks an impro- 

 babilit} T , that the species may be the same as one earlier 

 but all too briefly described by Stimpson, from the coast 

 of Florida, under the name Scyra umbonata. The speci- 

 men taken by the Porcupine was first described as Amathia 

 Carpenteri, but the genus Amathia, Roux, has a pre-occu- 

 pied name which has in consequence since been changed, 

 by S. I. Smith, to Anamathia, and Professor A. Milne- 

 Edwards discovered that the species Carpenteri could not 

 be included in that genus. At the same time he noticed 

 its likeness to Stimpson's species above mentioned, and 

 framed for it the new genus Scyramathia. From the fore- 

 going remarks it will easily be understood what suggested 

 the composition of this generic name, but it must not be 

 forgotten that Scyramathia belongs to the family Maiidee, 

 whereas Anamathia stands in the previously described 

 Inachidge, and Scyra (though to the exclusion of Stimp- 

 son's species umbonata) is a genus belonging to the next 

 family, the Periceridge. 



Family 3. Periceridce. 



The eyes are retractile within the small circular and 

 well-defined orbits, which are not incomplete as in the 

 Maiidge. The basal joint of the second antennae is well 

 developed, and constitutes a great part of the inferior wall 

 of the orbit, the joint being in general much enlarged. 



The family contains about twenty genera. 



Pericera, Latreille, 1829, of which the type is Pericera 

 cornudo (Herbst), 1804, has been despoiled of many of 

 its species by Miers, who has transferred them to Macro- 

 coeloma, a new genus which he instituted in 1879. Of 

 the species Macrocoeloma trispinosa (Latreille) Mr. Ives 

 says that Yucatan specimens when alive are of a bright 

 scarlet colour. In the Challenger species, Macrocoeloma 

 concava, Miers, from Bahia and Fernando Noronha, the 

 body and limbs are covered with a short close pubescence 

 and with some longer curled hairs. Its colour in spirit is 



