A NE:W species of DIAPTOMUS from MEXICO. 



Diapto 



lehmeri, n. 



Cephalothorax, broadest at the middle ; with four distinct 

 sutures. The last segment, produced later- 

 ally and armed with two 

 prominent spines. The 

 first segment of the ab- 

 domen, armed on each 

 side with a strong sharp 



spm 



seg- 



ment of the female ab- 

 FiG I —Diaitomiis leh ^^^^^ tapcrlug and 

 nieri n. sp. Abdomen about as loug as thc re- 

 ema e X 7- maludcr of thc abdomen. 



The second segment is short, being only 

 one-fourth the length of the third. The 

 furcal rami are almost twice as long as 

 broad, and hairy on both margins in the 

 female (Fig. i), but on the inner margin 

 only in the male. 



Antennae twenty-five segmented and 

 reaching beyond the tips of the furcal 

 rami. The right male antenna (Fig. 4) 

 is moderately swollen and its antepenulti- 

 mate segment bears a pointed curved hook, 

 which is not as long as the ultimate seg- 



The male fifth feet (Fig. 2) are rather ^ ,^3. 

 robust. The first basal segment of the 

 right foot has a tubercle near its outer margin which bears 

 long sharp spine. The second basal segment is almost a 



