La formule chromosomique deBlaps mortisaga L. (Col. Tenebr.)
A study has been made of the chromosomes ofBlaps mortisaga L. The diploid number is 36. There are four sex-chromosomes which form a single configuration at the first division of maturation and disjoin so that three pass to one pole and the fourth to the other. A further study will be made on the female to indentify the type of the sex-chromosomes.