CAPRELLIDAE OF WESTERN NORTH ATLANTIC 89 



Remarks. — The characters which sei)arate this species from P. 

 pusilla are presented under the remarks of the latter species. 



P. tenuis has been collected from various red and brown algae, 

 sea grass, sponges, hydroids, alcyonarians, bryozoans, and from 

 hydroids attached to the carapace of the spider crab Libinia. This 

 species has the pecuhar habit of curling when preserved, which makes 

 it relatively easy to sort from the other caprellid species. 



I'ariambiis typiciis f. ciitnana (jMayer, 1903) 



Podalirius typicus f. cumana Mayer, 1903, p. 65, pi. 10, figs. 6-7. 

 Podalirius typicus f. camana. — Monterosso, 1915, p. 7. 

 Pariambus typicus f. Cumana. — Chevreux and Fage, 1925, p. 442. 



Remarks. — Mayer described this form of Pariambus typicus from 

 "Strand von Cumae" which Chevreux and Fage took to be Cuma, 

 Venezuela. In Mayer's faunal list at the end of his "Siboga"report 

 (1903), he does not mention P. typicus in the material from the 

 West Indies and South America so it is probable that he was referring 

 to Cumae, Italy, instead of Cuma, Venezuela. 



Phtisica Slabber, 1769 



Flagellum of antenna 2, 2- to 5-segmented, s\\imming setae absent; 

 mandibular palp 3-segmented, setal formula for terminal article 

 1-x-l or 1, molar absent; outer lobe of maxilliped equal to inner 

 lobe; gills on pereonites 2-4; pereopods 3 and 4, 6-segmented, pereopod 

 5, 5-segmented; abdomen of male with 3 pairs of appendages, fenuile 

 Avith 2 pairs of appendages, pair of lobes and raised anterior projection. 



Type-species: Phtisica marina Slabber, 1769 (by monotypy). 



Remarks. — The generic name Avas probably derived from the 

 Greek word "i)hthisikos" meaning consumptive; however, Slabber 

 does not give the derivation and therefore the original orthography 

 should be retained. 



Phtisica antilletisis (Mayer, 1903) 



Figures 45, 54 



Proto anlillensis Mayer, 1903, p. 21, pi. 1, fig. 4, pi. 6, fig. 21. 



Diagnosis. — Carpus of gnathopod 2 longer than merus, propodus 

 broad medially with grasi)ing spines at midlengtli. 



Description'. — ^lale holotype: Body smooth. Lenglli 1.5 mm. 



Antenna 1 approximately one-half body length, fhigchum of 3 

 articles. Antenna 2, three-fourths length of antenna 1, flagellum of 2 

 articles. 



Terminal article of mandibular palp with 2 setae. Mandibles 

 similar to P. marina wiih incisor, lacinia mobilis, and 2 additional 

 plates; setal row less developed than in P. marina. Outer lobe of 



