PLATE 15. 



Bathydorus laevis spinosissimus Lendenfeld. 



Figs. 1-4, 6-10, 14, 16-22 — specimen B. 

 Figs. 5, 11-13, 15 — specimen A. 



1. — Middle-sized, fairly regular, dermal tetractine (stauractine) of specimen B; magnified 600; phot. 



Zeiss, apochr. 4, compens. oc. 12. 



2. — Small dermal tetractine with rudiment of a fifth ray, of specimen B; magnified 600; phot. Zeiss, 



H. I. apochr. 2, compens. oc. 6. 



3. — Part (three upwardly directed rays) of a middle-sized dermal hexactine of specimen B; magnified 



600; phot. Zeiss, apochr. 4, compens. oc. 12. 



4. — i^mall dermal diactine with a rudiment of a third ray, of specimen B; magnified 600; phot. Zeiss, 



apochr. 4, compens. oc. 12. 



5. — Large dermal diactine with rudiments of two other rays, of specimen A; magnified 600; phot. 



Zeiss, H. I. apochr. 2, compens. oc. 6. 



6. — Large dermal diactine with a rudiment of a third ray, of specimen B; magnified 600; phot. Zeiss, 



apochr. 4, compens. oc. 12. 



7. 8. — Two large gastral pinule-like hexactines with considerably differentiated distal ray, of specimen 



B; magnified 600; phot. Zeiss, apochr. 4, compens. oc. 12. 

 9, 10. — A dermal tetractine with rays considerably shortened and thickened, of specimen B; magnified 

 600; phot. Zeiss, apochr. 4, compens. oc. 12: 

 9, focussed lower; 10, focussed higher. 



11. — Part of a large dermal tetractine (stauractine) with one strongly bent ray, of specimen A; magni- 



fied 600; phot. Zeiss, apochr. 4, compens. oc. 12. 



12, 13. — Two rather large gastral, somewhat pinule-like hexactines with only slightly differentiated 



distal ray, of specimen A; magnified 600; phot. Zeiss, apochr. 4, compens. oc. 12. 

 14-17. — Distal, more or less differentiated, pinule ray-like rays of gastral hexactines; magnified 600: 



14, 16, 17, of specimen B; 



15, of specimen A; 



14, 15, phot. Zeiss, apochr. 4, compens. oc. 12; 

 16, 17, phot. Zeiss, H. L apochr. 2, compens. oc. 6. 



18. — Large dermal tetractine (stauractine) with one ray considerably shorter than the others, of speci- 



men B; magnified 600; phot. Zeiss, H. L apochr. 2, compens. oc. 6. 



19. — Middle-sized dermal tetractine (stauractine) of specimen B; magnified 600; phot. Zei.ss, H. I. 



apockr. 2, compens. oc. 6. 



20. — Large dermal tetractine with somewhat unequally developed rays and a rudiment of a fifth ray, 



of specimen B; magnified 600; phot. Zeiss, H. I. apochr. 2, compens. oc. 6. 



21. — Middle-sized dermal tetractine with two rays considerably reduced in length, of specimen B; 



magnified 600; phot. Zeiss, apochr. 4, compens. oc. 6. 



22. — Large dermal tetractine with one ray considerably reduced in length, of specimen B; magnified 



600; phot. Zeiss, apochr. 4, compens. oc. 12. 



