132 PROCEEDINGS OF THE. NATIONAL MUSEUM vol. loi 



Uropods. — Greatly exceed pleotelson length. 



Pleopods. — ^Lateral tip of each first male pleopod twisted to form 

 a groove. Second and third male pleopods very similar to those figured 

 for /. davisi (compare figs. 20, h, <?, with 21, 6, a) . 



Type.— Ho\oty])e male (U. S. N. M. No. 43646) collected at Monte- 

 rey Bay, Calif., date not given on label, by Harold Heath, from Raja 

 hinoculata egg, 20 fathoms. 



Geographical distrihution. — Known only from the type locality. 



Remarks. — This specimen was identified by Dr. Harriet Richard- 

 son Searle as Janiropsis calif ormca and was sent to me by Dr. Fenner 

 A. Chace, Jr., curator of marine invertebrates, U. S. National Museum, 

 as an example of that species. In my opinion this specimen could not 

 possibly represent Janiropsis calif ornica., inasmuch as the description 

 applicable to this specimen differs much too greatly from the descrip- 

 tion of Janiropsis calif ornica Richardson (Richardson, 1905b, p. 455, 

 fio;s. 507-508). The types of /. calif ornica are not to be found at the 

 IJ. S. National Museum, according to Dr. Chace. There are some 

 specimens in the Pacific Marine Station Museum collections that agree 

 in most essential respects with the description and figures of J. cali- 

 f ornica as given by Dr. Richardson {op. cit.). The specimens were 

 collected as ectocommensals from the isopod Sphaeroma pentodon 

 Richardson and possibly belong in the genus lais; however, I cannot 

 agree with Dr. Th. Monod's supposition (Nordenstam, 1933, p. 179) 

 that Janiropsis calif ornica is a synonym of lais pubescens (Dana). 



JANIRALATA SOLASTERI (Hatch) 



FiGUBEs 23, e, // 24 



Janira solastcri Hatch, 1947, p. 172, pi. 14, figs. 158-160. 



Diagnosis. — Cephalon with an elongate, pointed rostrum; antero- 

 lateral borders each with a wide angulate projection. Eyes dorsal, 

 situated a considerable distance away from the lateral borders of 

 cephalon. Lateral lobate extensions of second and third peraeon 

 somites separated from one another a distance exceeding twice the 

 length of anterior lobe. Pleotelson with angulate, medially recurved 

 posterolateral projections and a medially unilobate posterior margin 

 that does not extend posteriorly beyond the limits of the posterolateral 

 angles. Structure of male first pleopod not known. 



SUPPLEMENTARY DESCRIPTIVE NOTES 



Cephalon. — Wider than long, with a prominent pointed rostrum, 

 two mediolateral lobes, and a setiferous angulate anterolateral exten- 

 sion on each side of cephalon. Eyes dorsal, bulging, located a con- 

 siderable distance from lateral margins 



Peraeon. — Similar to that figured for /. occidentalis (compare figs. 



