MILLIPEDS OF FAMILY LYSIOPETALIDAE — ^LOOMIS 109 



Males with a comb of fine hairs on the under side of the last joint 

 of legs 1 and 2. Last joint of the other legs in front of the gonopods 

 with a velutinous pad on the under side near the claw (fig. 16, I) ; 

 smaller pads, gradually diminishing in size, are found on the last 

 joint of several of the legs following the gonopods. Coxae of the 

 seventh legs normal. 



Females with a comb of hairs on the first two pairs of legs, as in 

 the male, and sometimes with a similar comb on the third legs 

 also ; other legs normal. 



Remarks. — This species has a very wide distribution, having been 

 reported from nearly all the Eastern, Southeastern, and East Cen- 

 tral States and also from Minnesota, Arkansas, Texas, and Louisiana; 

 and specimens from many localities in Florida have been examined. 

 Because of the striking external similarity of this species with S. 

 fexemis, making dissection of the males necessary in classifying, it 

 seems probable that the specimens reported as lactarium from the 

 more western of the above States were incorrectly identified and 

 may have been texensk or another species. 



SPIROSTREPHON TEXENSIS, new species 



FiGUBE 16, n 



Diagn^s^is. — The external features of this species are very similar 

 to those of the eastern lactarium^ but the male gonopods show strik- 

 ing differences; the curved outer arm ends in a sharp point, instead 

 of being broadly rounded ; the upper division of the subapical struc- 

 ture is short and simple, and not bifid near the tip; and the lower 

 division is in two parts instead of one as in l(wtarium. 



Description. — Body 25 to 32 mm long and 1.5 to 2 mm broad; 

 composed of 56 to 61 segments. 



The eyes usually of 10 series of ocelli, counting downward, dis- 

 posed as follows: 1, 2, 3, 4, 5, 6, 7, 8, 8, 7, a total of 51 ocelli. Sev- 

 eral specimens had 51 ocelli in 10 series, and none exceeded this ar- 

 rangement. The sense organ is in front of the sixth and seventh 

 rows of ocelli. 



The impressed poriferous area of the lateral carinae is narrower 

 than in lactarium,., and the pore is slightly farther forward in it, 

 being located at the anterior fourth or fifth. 



Male gonopods as shown in figure 16, n. 



Males with ventral comb of hairs beneath the outer joint of the 

 first two pairs of legs; the other legs in front of the gonopods and 

 8 or 10 pairs thereafter with a velutinous pad beneath the last joint 

 near the tip. Females with comb of hairs on the first two and some- 

 times on the first three pairs of legs as in lactarium. 



