FLEMINGER and HULSEMANN: FOUR SIBLING SPECIES OF PONTELLINA 



Right Al in male with segments 13-17 swol- 

 len, 13-14 and 16-17 fused; length of swollen 

 section varies considerably due to either tele- 

 scoping of segments or expansion of articula- 

 tions. Distal three free segments slender and 

 consisting of segment 18 followed by a com- 

 pound segment formed by fusion of segments 

 19-21, and ending in a compound segment fusing 

 segments 22-25. 



Mandibular blade (Giesbrecht 1892. pi. 25, 

 fig. 14) bearing a one-pointed apical (ventral) 

 tooth, a two-pointed subapical tooth, two deeply 

 cut two-pointed medial teeth, and three basal 

 (dorsal) teeth; basal seta lacking; dorsal acces- 

 sory bristles exceed teeth in length; patches of 

 spinules appear on anterior side of blade. 



P5 segmentation in both sexes typically 

 pontellid; B2 of male bearing a large plumose 

 seta on posterior surface, Ri lacking. Re bi- 

 merous; right leg with elongate Bl, cheliform 

 Re; left leg with reduced Bl fused to precoxa, 

 distal segment of Re armed with four short seti- 

 form processes. 



Spermatophore with relatively long neck 

 bearing one full counterclockwise turn relative 

 to proximal end, helix occurring between sper- 

 matophore sac and place of attachment located 

 in a cement mass overlying genital pore of 

 female. Elongate spermatophore neck may also 

 be connected secondarily to right side of genital 

 segment proximal to helix, thereby orienting 

 sac dorsad or anterodorsad with helix and sac 

 flanking right side of genital segment. When 

 secondary lateral cementation absent, neck, 

 helix, and sac hang free from ventral side of 

 genital segment. 



PONTELLINA PLUMATA (DANA) 



(Figures 3 and 4) 



Pontella plumata Dana, 1849, p. 27 (type local- 

 ity not designated); Brady (in part), 1883, 

 p. 92, pi. 37, fig. 1-10 only." 



Pontella turgida Dana, 1849, p. 28 (type local- 

 ity not designated). 



Pontelli)ia plumata: Dana, 1853, p. 1135; Dana, 

 1855, pi. 79, fig. 10; Giesbrecht, 1889, p. 29; 

 Giesbrecht, 1892, p. 497, pi. 4, fig. 1, pi. 25, 

 fig. 1, 4, 6, 7, 9, 12-14, 18, 20, 21, 23-26, 36, 

 pi. 40, fig. 49-53; Mori (in part), 1937, 

 p. 99, pi. 47, fig. 7-11 only; Grice, 1962, p. 

 240, pi. 34, fig. 11-15; Brodsky, 1962, p. 



147, fig. 47; Park, 1968, p. 569, pi. 13, fig. 



15-16. 

 Poiitclliiia turgida: Dana, 1853, p. 1136; Dana, 



1855, pi. 79, fig. 11, 12. 

 Calaiiops mesMnensis Glaus, 1863, p. 212, pi. 



2, fig. 11, pi. 36, fig. 13-16, pi. 37, fig. 10 



(Messina). 

 Pontellopsis speciosus Brady, 1915, p. 138, pi. 



10, fig. 1-8 (Durban Bay). NEW SYNONY- 

 MY. 

 Pontellopsis aequalis Mori, 1932, p. 172, 175, 



pi. 4, fig. 7-13 (25°20'50"N, 124°7'30"E). 

 not Pontella plumata: Brady (in part), 1883, p. 



93, pi. 37, fig. 11 only, 

 not Po)itelli)ia navalium Oliveira, 1947, p. 472, 



fig. 12; Vervoort, 1965, p. 191. 



Specimens seen: 1,259 adult females, 917 adult 

 males. 



Standard measurements: specimens randomly 

 selected from localities spanning the 

 observed geographical area of distribution. 



Total length (TL), mm: 



Diagnosis 



Female 



Posterior corner of ThIV-V in lateral view 

 produced into conspicuous spiniform process of 

 characteristic shape (Figure 3 a, b, d-g). Ventral 

 margin of spine more or less continuous with 

 ventral margin of ThIV-V, transition with dor- 

 sal margin abrupt and stepped; junction of 

 distal end of spine and thicker basal portion 

 usually set off by weak shoulder, spine extending 

 posteriad, sometimes tilted weakly ventrad or 

 dorsad. In dorsal view spine more or less con- 

 tinuous with posterior tapering of corner, 

 shoulder or constriction sometimes present; 

 spine usually directed posteriad and slightly 

 laterad, sometimes straight or turned slightly 

 mediad. 



71 



