LOWER CALIFORNIAN SHELLS. 165 



"I am now able to state that your rmnentosa is a Bu- 

 limulus ! The jaw is like that of Thysanophora exactl}^, 

 and also like that of Bui. artemisia, while the teeth differ 

 very little." He does not, however, notice the differences 

 in the shell from that of the latter, and I therefore pro- 

 pose the above name, having before mentioned the re- 

 semblance in the nuclear whorls and epidermis to those 

 of B. artemisia and suggested the affinity of the two 

 forms on p. 138.* 



Genus Pseudosubulina. 

 In describing Afelaniella eiseniana in article 3, vol. iii, 

 p. 339, of these Proceedings in 1893, I adopted the genus 

 with a (?), remarking on the absence of jaw, but did not 

 suspect it to have lingual teeth of the carnivorous type. 

 These have been found in a specimen dissected by Dr. 

 Dall, who refers this and AI. tastensis to the above genus, 

 and shows an apparent affinity in this respect to Oleacin- 

 id«. Several genera resembling this species and P. tas- 

 tensis in form of the shells have been referred to the same 

 family, especially Megaspira and Balea. I would have 

 put P. eiseniana in the latter genus if not misled by its 

 external likeness to Stenogyra. But the fact of carniv- 

 orous dentition does not separate the families entirely in 

 habits, as some species are known to eat vegetable food 

 as a rule, not being able to obtain animal food suitable to 

 their needs very often. They should rather be called 

 omnivorous, and indeed there are probably few, if any, 

 species even of the phyllovorous genera exclusively veg- 

 etivorous. 



*Tlie subgenus name Peronceiis cannot be used for either of these spe- 

 cies, the name being preoccupied. The same is true of Leptohyrsus, it 

 being used in the feminine form in entomology two years before C. & F. 

 used it (Scudder). 



