explanation of plates, vol. 28. 211 



Plate 4. 

 figures page 



1. Strohilops salvini Tristr. After von Mar- 



tens 37 



2. S. aenea Pils. Parietal lamellae, near their 



inner ends 29 



3. 4. S. lahyrinthica form virgo Pils. Type 23 



5. S. veracruzensis crossei Pils. After Strebel 36 



6. S. veracruzensis Pils. After Strebel 35 



7. 8. S. lahyrinthica Say. Genitalia and kidney, 



after Hanna 1 



9, 10, 11. 8. lahyrinthica Say. Living animal and 



teeth. Pilsbry del 1 



Plate 5. 



1-4. Strohilops streheliFfr. Mirador. 11546.. 33 



5. S. strebeli guatemalensis Hinck. Young. 



9212a 34 



6-8. S. streheli guatemalensis Hinck. Type 9272 34 

 9-13. S. aenea mexicana Pils. El Diente, near 

 Monterey, Mexico. 77194. Figs. 10, 11, 

 the type ; fig. 12, young example 32 



Plate 6. 



1-3. Strohilops helleri Dall. Type. 108515 



USNM 41 



4. 6. S. morsei Dall. Type. 24013 USNM .... 39 



5. S. morsei Dall. Venezuela. 22923 ANSP. 39 

 7-11. 8. hrasiliana F. Bkr. Figs. 7, 8 the type. 



Fig. 11, edge of the parietal lamella 40 



Plate 7. 



1-3. Strohilops huhhardi Brn. Calhoun Co., 



Texas. Type. 124 47 



4. Strohilops huhhardi. Valles, San Luis 



Potosi. 107580 50 



5. Strohilops huhhardi. Tampico. 96558 ... 50 



6. Strohilops huhhardi. El Abra, Vifiales, 



Cuba 49 



7-9. Strohilops huhhardi. Bellevue, Jamaica. 



11523 48 



10-12. Strohilops huhhardi. Admiral's Cave, Ber- 

 muda, 131597 49 



