NO. 2063. NORTH AMERICAN PARASITIC C0PEP0D8— WILSON. 651 



crude resemblance to a miniature human figure. The genus type 

 shown by the male is fully as distinct as that of the female, and this 

 has differentiated the genus so thoroughly that there has been almost 

 no false identification of the species (see pi. 26, fig. G). 



TABLE OF SPECIES. 



1. Fimbriate processes few in number and well separated 2. 



1. Fimbriate processes numerous and thickly massed 3. 



2. Processes unbranched, clnh-shaped. .appendiculata (Steenstrup and Liitken), 1861. 



2. Processes dichotomously branched longimana Wilson, 1913, p. 651. 



3. Second maxillae with three single processes; a single bundle of unbranched proc- 



esses on either side of the trunk at the posterior end fimhriata (Heller), 1865. 



3. Second maxillae with four bundles of processes; two similar bimdles at the posterior 



end of the trunk, all dichotomously branched 4. 



4. Posterior fimbriate processes recurved at the tips and entirely concealing the egg 



strings pomacanthi Kr0yer, 1863, p. 651. 



4. Posterior processes straight, egg strings visible for half their length. 



loUventris (Heller), 1865. 

 THYSANOTE LONGIMANA Wilson. 



Thysanote Zongrmana Wilson, 1913, p. 257, pi. 47, figs. 262-264; pi. 48. 



Host and record of specimens. — Five females and three males were 

 obtained from the throat of the red snapper, Neomaenis aya, at Mon- 

 tego Bay, Jamaica, July 23, 1910, and both sexes are fully described 

 in the reference given above. Since the host is found aU along our 

 Atlantic Coast as far north as Connecticut this parasite also may be 

 classed as North American. 



THYSANOTE POMACANTm Kr^yer. 



Thysanote pomacanthi Kr0yer, 1863, p. 288, pi. 15, fig. la to i. 



Host and record of specimens. — Kr0yer obtained 10 females from 

 the gills of Pomacantlius paru in the Danish West Indies. M. T. 

 Thompson recorded in his manuscript notes two females of this 

 species from the gills of Pomacanthus arcuatus in the local collec- 

 tion at Woods Hole, Massachusetts. From the sketches and data 

 accompanying this record it is certain that the specimens really 

 belonged to this species, so that it may be recorded as North Ameri- 

 can. These specimens, however, can not be found, and hence no 

 attempt is made to supplement Kr03^er's description. 



THYSANOTELLA, new genus. 



Generic characters of female. — Cephalothorax curved forward and 

 nearly as long as the trunk; the latter much the wider, with concave 

 sides, each of the four corners prolonged into a single bundle of four 

 filiform, unbranched processes; two pairs of posterior processes, one 

 dorsal, the other ventral, close to the midUne, with a tiny genital proc- 

 ess between them. First antennae three-jointed; second antennae 

 biramose, without claws; first maxiUae bipartite, palp with a single 



