ste 



PROCEEDINGS OF THE NATIONAL MV8EUM. VOL. xxxvi. 



First pair of legs with a broad hand having a very convex anterior 

 margin; pahn comprising nearly all the posterior margin of the 

 hand, evenly curved, and furnished with a long spine at the upper 

 end. The following legs increasing in length posteriorly and fur- 

 nished on the margins 

 with long spines and fine 

 cilia. 



First abdominal seg- 

 ment very short. Termi- 

 nal segment triangular 

 with slightly sinuous mar- 

 gins, the tip narrowly 

 rounded when seen from 

 above, but having a deep 

 notch on the lower side. 

 Uropods with a single 

 movable, styliform ra- 

 mus, which nearly or 

 ({vute reaches the tip of 

 the abdomen. 

 Lengthy 8 mm. 

 Locality. — Near Coro- 

 nado Island, California, 

 from a depth of 3 fathoms. 

 Tijpe.—Cat. No. 39046, 

 U.S.N.M. 



This is the only species of the genus known to occur on the Pacific 

 coast. It is broader and flatter than Ancinus depressns Say of the 

 coast of New Jersey and has a more broadh^ tri- 

 angular terminal segment of the abdomen. 



TYLOS PUNCTATUS, new species. 



Oblong, covered with scattered short spines or 

 acute granulations. Ej^es nearly round. Firs 

 antenna? single jointed, scale like. Second anten- 

 nae less than one-fifth the length of the bod}^, nol 

 reaching the middle of the first thoracic segment : 

 a hook-like process on the second joint of the 

 peduncle ; third joint nearly as long as the two 

 preceding; flagellum slightly longer than the last 

 joint of the peduncle, the third joint nearly as 

 long as the two preceding; fourth joint short, 

 conical, and furnished with numerous seta? at its 

 distal end. Lateral lobes of the head with two triangular projec 

 tions in front of the eyes. 



Pig 2. — Ancinus granulatus ; a, second leg 



SECOND PLEOPOD OF THE MALE. THESE FIGURES^ 

 WHICH WERE KINDLY SIPPLIED BY MiSS II. RICH- 

 ARDSON, ARE DRAWN TO A LARGER SCALE THAN THE 

 PRECEDING ONES. 



Fig. 3. — Tylos punc- 



TATUS. 



