ISOPODS OF NORTH AMERICA. 



87 



CIROLANA MAYANA Ives. 



Cirolana mayana IVES, Proc. Acad. Nat. Sci. Phil., 1891, pp. 186-187, pi. vi, figs. 

 3-10. RICHARDSON, Proc. U. S. Nat. Mus., XXIII, 1901, p. 512. MOORE, 

 Bull. U. S. Fish Comm., XX, Pt. 2, 1902, p. 166, pi. vin, figs. 1-5. 



Localities. Coast of Yucatan; Santa Marta, United States of Colom- 

 bia; Boqueron Bay and Culebra, Porto Rico; Brandon's, Barbados 

 Beach; San Francisco Bay, Lower California. 



A large number of dried specimens from San Francisco Bay, Lower 



FIG. 66. CIROLANA MAYANA (AFTER MOORE), a, GENERAL FIGURE. 6, HEAD, c, FIRST ANTENNA. 



d, SECOND ANTENNA. 



California, sent to me by Doctor Hitter, of the University of Cali- 

 fornia, agree so perfectly with the specimens in the U. S. National 

 Museum from localities above cited that I have not been able to sepa- 

 rate them. , 



per paria latiora, plus producta, altius carinata, angulo posteriore subacuto; epimera 

 septimi paris segmenta quattuor anteriora caudse longitudine explentia. 



Pedes trium parium anteriorum sat robusti, artieulo secundo elongate, quarto 

 brevissimo angulo exteriore ultra apicem articuli quinti prominente; pedes secundi 

 et tertii parium artieulo sexto multo latiore quam in speciebus ceteris, longo, duplo 

 longiore quam latiore. 



Pedes parium quattuor posteriorum breves, sat robusti; pedes sexti et septimi 

 parium inter se subseque longi, pedibus quinti paris paulo longiores. 



Segmenta quinque anteriora caudse detecta, brevissima, alte convexa; segmentum 

 quintum angulis lateralibus non a segmento quarto tectis. 



Pleopoda parium anteriorum setis longis instructa. 



Segmentum ultimum caudrc aliquanto latins quam longius, subtrigonum, apice 

 brevius, subrecte truncate, non spinoso, alte convexum, dorso alte tricarinato et 

 inter carinas profunde et aequaliter excavato; carime dure laterales postice paulum 

 divergentes, paulum arcuatae. 



Uropoda brevia, lata, caudam non superantia. Ramus interior plus duplo longior 

 quam latior; margo exterior valde excurvatus, paulum ante medium subangulatus, 

 parte distali irregulariter serrata, non spinosa; margo postero-interior interum valde 

 excurvatus, fere angulatus, setis nonnullis brevissimis instructus; apex angulum 

 valde obtusum formans, setis nonnullis longioribus instructus. Ramus exterio'r ramo 

 interiore multo brevior, huic forma similis. Scapus angulo interiore minus producto, 

 non ad medium ramum interiorem prominente. 



Color flavo-brunnescens, nonnihil grisescens. HANSEN, Vidensk. Selsk. Skr., (6), 

 V, 1890, pp. 351-353. 



