2IO CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



15. Scytodes perfecta, sp. nov. 



Plate XIII, Fig. 2. 



Length $'7 mm., $ 6 mm., ceph. 3.2 mm. long, femur I 4.2 mm. Ceph- 

 alothorax pale yellow, marmorated with brown marks on the plan of 5\ 

 thoracica, in some specimens the markings nearly obliterated; legs pale, 

 without markings; sternum pale yellow; abdomen grayish, above two rows 

 of five or six black spots, the basal pairs longer and somewhat connected, 

 two or three smaller spots on each outer side. Cephalothorax moderately 

 high, quite broad; M. E. touching, equal in size to other eyes; sternum once 

 and a half longer than broad, truncate behind. Legs slender, in $ femora I 

 are furnished each side with a row of short, stiff spines, in the ? clothed with 

 fine hair. Abdomen subglobose, longer than broad, broadly rounded behind, 

 clothed as also the cephalothorax with short bristly hairs. The $ palpus is 

 short; tibia once and a third longer than broad; tarsus long, curved, slender, 

 bulb large, tapering gradually to the long, straight tube, which projects much 

 beyond the tarsus. 



A few specimens from San Jose del Cabo and San Miguel 

 de Horcasitas. 



16. Scytodes mexicanus, sp. nov. 



Plate XIII, Fig. i. 



Length 8 mm., ceph. 3.8 mm. long, femur I 5 mm. Cephalothorax pale, 

 marked with dark brown, a transverse mark in fronton M. E.; behind is a 

 median line to near middle of the cephalothorax, each side is a broader line 

 connected to a spot around the S. E., and on the middle connected to a large 

 broad stripe extending backward and curved toward the center behind and 

 then away from it, giving off each side several paler bands forming a rough 

 network on each side of the cephalothorax; a spot on mandibles; a line on 

 outside of maxilla;; sternum pale, with brown spots around the edge and 

 some in center; legs pale, small spot on base and large one on tips of coxae; 

 femora with median and apical rings and several irregular ones near base, a 

 spot on under side of patellae, three rings on the tibiae besides the extreme 

 base, and a spot and a line under the metatarsi; abdomen gray, blackish 

 above near tip, showing a few narrow, pale chevrons; venter with a few 

 scattered black spots. The cephalothorax moderately broad and high; M. E. 

 barely touching, hardly as large as S. E. ; legs slender, but not near as long 

 as in S. longipes; sternum once and a third longer than broad, rounded 

 behind; abdomen subglobose, longer than broad and pointed behind. 



One specimen; Mexico City. 



CECOBIID^E. 



17. Thalamia parietalis Hentz. — One specimen, without 

 locality. 



