PALPUS OF DRAS 

 SODES ROBUSTUS 



Superfamily Arglopoidea 



ridges meet on the middle line as shown in the figure, but some- 

 times they are more or less widely separated. 



The male is much smaller than the 

 female. Figure 304 represents the palpus; 

 the tibia is short and has a short curved 

 process that extends over the cymbium on 

 the upper side; the bulb is large. 



Genus MEGAMYRMECION 

 (Meg-a-myr-me'ci-on) 



The cephalothorax is ovate, with the 

 front narrow, and with a long median furrow. 

 Fig. 304. The anterior eyes are close together, in a 



strongly procurved line, and the median eyes 

 are larger than the lateral ones. The pos- 

 terior eyes are in a very strongly procurved semicircular 

 line, which is not at all longer than the anterior line; the 

 median eyes are oblique, ovate or angulate, and nearer to each 

 other than to the lateral eyes. The clypeus is a little wider 

 than the anterior eyes. The chelicerae are of moderate size, 

 with the lower margin of the furrow unarmed, and with two 

 minute teeth on the upper margin. The labium is longer than 

 wide, truncate, and extends beyond the middle of the endite. 

 The fore spinnerets are very long and are furnished with nine 

 or ten large spinning tubes placed in a semicircle. 

 The following is our only species: 



Megamyrmecion calijomicum (M. cal-i-for'ni-cum). — The 

 female measures one fourth inch or more in length, and is of a 

 quite uniform grayish colour. It occurs in California. 



Genus DRASS1NELLA (Dras-si-nel'la) 



The posterior row of eyes is longer than the anterior row 

 and is straight; the posterior median eyes are nearer to the pos- 

 terior lateral eyes than to each other. The lateral eyes of each 

 side are less than their diameter apart. The tarsi are slightly 

 scopulate. The labium is broader than long. The spinnerets 

 are not very long. 



Two species are known from the United States. 



314 



