25 has tip of snout much more broken Measurements don't bring out these differences in head shape because the ♀ is much thicker in proportion to the length than the ♂'s and consequently girl measurements are skewed since the two males don't show it I learned from above the same differences appears in #29♀ The head is much more compressed & is sharper Osteology When removing the skeletons I dissected the animals with great care & the following results are certainly correct #29♀ I. boraxia #29 ♀ Teeth formula 47-46 Teeth set loosely in 47-46 sockets & could be easily moved with the fingers; teeth curved slightly outward, & very sharp. The anterior ones of each jaw are accordingly small & if they had not been carried in situ the for- mula would almost certainly be given as different because the very minute anterior tees would surely be lost by ordinary preparations. This would undoubtedly account for the discrepancies in the formulae given by True for this species. Phal 97 pns - the last 2 pns short & imputedched i.e.