172 Auuals Entomological Society of America [Vol. X, 



at the posterior lateral angle, another just within the anterior angle, 

 and a long spine arises on each side midway to the center. Metathorax 

 at first abruptly diverging for a very short distance, and then as abruptly 

 converging with a concave-bordered excavation medially. A short 

 spine at the lateralmost points, three long spines along the converging 

 sides, and eight longish spines along the border of the emargination. 

 Legs normal. 



Abdomen oval in outline, widest on the third and fourth segments. 

 First segment with six short spines along each lateral margin, a series 

 of eight across that part within the metathoracic excavation, and about 

 twenty-two in a transverse series along the hind margin. Segments 

 two to seven, inclusive, with transverse rows of spines as follows: 

 Segment two, twenty-six spines; segment three, twenty-seven spines; 

 segment four, twenty-two spines; segment five, eighteen spines; segment 

 six, twenty spines (of very uneven length); segment seven, fourteen 

 spines. Segment eight with a long hair within each of the chitinized 

 appendages (arising from the seventh segment), and two weak hairs 

 near the posterior tip. 



Male. — Head one-third again as wade as long; antemial sinuses 

 much deeper than those of female, and are nearly filled by the ample 

 trabecula-like processes ; temples narrower but more prominent ; anterior 

 median emargination represented merely by a transparent V-shaped 

 spot. Antennae with basal joint swollen; a pair of pincer-like processes 

 on the basal and second joints opposed to one another across the dividing 

 suture; last joint with an obtuse-angled spur on inner margin near 

 base. 



Trichodectes scleritus n. sp. 



Numerous females and immature individuals (McGregor 

 No. 4321) from gopher, Florida. 



This species is somewhat intermediate between T. geomydis 

 Osb. and T. calif ornicus Chapm., probably nearest the former 

 as figured by Kellogg and Ferris. Very distinct through the 

 following characters: Hooked trabeculae; presence of posterior 

 prominence on second and third antennal joints; conspicuous 

 lateral sclerites on first to fifth abdominal segments, inclusive. 



Description of Female. — Total length, 1.04 mm.; length of head, 

 .284 mm. ; length of prothorax, .()*)2 mm. ; length of metathorax, .042 mm ; 

 length of abdomen, .G2o mm.; width of head across temples, .412 mm.; 

 width of prothorax, .298 mm.; width of metathorax, .341 mm.; width 

 of abdomen, .575 mm. 



Head almost half again as wide as long, generally rounded anteriorly 

 with a conspicuous, semicircular median emargination, and produced 

 into a hooked trabccula-like appendage at the base of the antennae. 

 Antennal sinuses moderately deep and wide. . Ocular projections not 

 very prominent. Temple margins diverge little, and soon curve 

 convergingly to meet the occipital margin, forming with it rather 



