106 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.7 



PLATE 4 



Figures 43 to 50, Halosydna glabra: Fig. 43, first elytrum from 

 right side, in dorsal view, stippling indicates pigmented pat- 

 tern, X 12.5 ; Fig. 44, sixth elytrum from right side, from same 

 individual as that shown in Fig. 43, x 12.5 ; Fig. 45, first ely- 

 trum, in dorsal view, showing distribution of macrotubercles 

 and microtubercles, x 32; Fig. 46, macrotubercles and micro- 

 tubercles from first elytrum, just posterior to the elytral scar, 

 X 290; Fig. 47, dorsalmost notopodial seta from a median para- 

 podium, X 290; Fig. 48, neuropodial seta from a median para- 

 podium, X 290 ; Fig. 49, a long, pointed notopodial seta from a 

 median parapodium, x 290; Fig. 50, portion of sixth elytrum 

 from area near anterior concavity, indicating distribution of 

 microtubercles and reticulated pattern, x 290. 



Figures 51 to 55, Halosydna, sp. A: Fig. 51, a long notopodial seta 

 from a median parapodium, x 290; Fig. 52, a neuropodial seta 

 from a median parapodium, x 290; Fig. 53, a short notopodial 

 seta from a median parapodium, x 290; Fig. 54, an elytrum 

 from the left side, in dorsal view, showing distribution of mac- 

 rotubercles (larger circles) and microtubercles (small circles), 

 X 12.5; Fig. 55, portion of preceding elytrum over inner end 

 of elytral scar, showing detail of pigmented area, x 290. 



