﻿Plate 24 



1, Golfingia hespera (Chamberlin) : The animal, natural size; that on left with 



fully extended introvert, the other with introvert partly invaginated, 



2, G. hespera: Central portion of visceral complex of figure 3; X 12. The 



nephridia are shown as hollow vesicles with posterior lobe removed and 

 the nephrostomes {N') as if walls were transparent. 



3, G. hespera: Dissection of trunk of a specimen from Balboa, Calif., X 6, 



showing particularly the two nephridia distended by sperm. 



4, G. hespera: Head with crown of tentacles, not fully expanded, surrounded 



by collar; X 40. 4, a, A line 0.25 mm. long. 



5, G. hespera: A hook from one of the anterior rings, X 1,000. 



6, Golfingia margaritacea calif orniensis, new subspecies: Two animals; X 2. 



7, G. margaritacea calif orniensis: Frontal view of the oral disk and tentacles; 



X 20. 



8, G. margaritacea californiensis: Glands at end of body seen hj transmitted 



hght; X 200. 

 A, anus; C, coecum; M, mesentery anchoring rectum; A^, nephridium; A^^', neph- 

 rostome; NO, position of nuchal organ; R, united retractor muscles, along 

 dorsal side of which is esophagus; RD, dorsal retractor; RV, ventral retrac- 

 tor; (S, spindle muscle. 



Plate 25 



1, Golfingia elachea, new species, X 5: Dissection to show principally the fixing 



muscles, 1 to 7, indicated in text as F^ to F^ A section has been removed 

 from the right retractor and most of the right nephridium is omitted. 

 The horizontal lines indicate posterior limit of introvert. 1, a. The 

 holotype, X 1. 



2, G. elachea: Three papillae from middle of introvert, one seen from top to 



show pore; X 200. 



3, G. elachea: Four papillae from posterior part of trunk, X 200. 



4, G. laetmophila, new species, type; X 2. The introvert is about one-half in- 



vaginated. W, wing muscles. 



5, G. laetmophila; X 6. Detail of base of the retractors showing esophagus and 



one of its mesenteries on left. The faint line in middle of esophagus is the 

 rudiment of the contractile vessel or its mesentery. O, esophagus. 



6, G. laetmophila; X 200. Four introvert spinelets; a and c with only part of 



cortical layer adhering; b, cortical layer removed; d, perfect spine. 



444 



