518 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.2 



EXPLANATION OF PLATES 



All drawings are from stained, permanent mounts in balsam and were made 

 by the use of a camera lucida. 



PLATE 51 



Gorgorhynchus lepidus, new species 



Fig. L Immature female, entire, showing general organization and 

 relation of the proboscis and related structures to the body. 



Fig. 2. Proboscis of a young female showing its form and arrange- 

 ment of the hooks. 



Fig. 3. Detail of basal region of proboscis of a young male showing 

 particularly the small papilla in the basal row of hooks. 



Fig. 4. Posterior extremity of an immature female showing part of 

 the uterus, the vagina, and genital orifice. 



Fig. 5. Detail of a portion of body wall showing in lateral view the 

 arrangement of vessels of lacunar system. 



